version: 1.0.125

GEMINI.md

@@ -13,7 +13,7 @@ JSPG operates by deeply integrating the JSON Schema Draft 2020-12 specification
 1.  **Draft 2020-12 Based**: Attempt to adhere to the official JSON Schema Draft 2020-12 specification, while heavily augmenting it for strict structural typing.
 2.  **Ultra-Fast Execution**: Compile schemas into optimized in-memory validation trees and cached SQL SPIs to bypass Postgres Query Builder overheads.
 3.  **Connection-Bound Caching**: Leverage the PostgreSQL session lifecycle using an **Atomic Swap** pattern. Schemas are 100% frozen, completely eliminating locks during read access.
-4.  **Structural Inheritance**: Support object-oriented schema design via Implicit Keyword Shadowing and virtual `$family` references natively mapped to Postgres table constraints.
+4.  **Structural Inheritance**: Support object-oriented schema design via Implicit Keyword Shadowing and virtual `family` references natively mapped to Postgres table constraints.
 5.  **Reactive Beats**: Provide ultra-fast natively generated flat payloads mapping directly to the Dart topological state for dynamic websocket reactivity.
 
 ### Concurrency & Threading ("Immutable Graphs")
@@ -37,12 +37,12 @@ These functions operate on the global `GLOBAL_JSPG` engine instance and provide
 JSPG augments standard JSON Schema 2020-12 to provide an opinionated, strict, and highly ergonomic Object-Oriented paradigm. Developers defining Punc Data Models should follow these conventions.
 
 ### Types of Types
-*   **Table-Backed (Entity Types)**: Primarily defined in root type schemas. These represent physical Postgres tables.
-    *   They absolutely **require** an `$id`.
+*   **Table-Backed (Entity Types)**: Primarily defined in root `types` schemas. These represent physical Postgres tables.
+    *   They are implicitly registered in the Global Registry using their precise key name mapped from the database compilation phase.
     *   The schema conceptually requires a `type` discriminator at runtime so the engine knows what physical variation to interact with.
-    *   Can inherit other entity types to build lineage (e.g. `person` -> `organization` -> `entity`).
+    *   Can inherit other entity types to build lineage (e.g. `person` -> `organization` -> `entity`) natively using the `type` property.
 *   **Field-Backed (JSONB Bubbles)**: These are shapes that live entirely inside a Postgres JSONB column without being tied to a top-level table constraint.
-    *   **Global `$id` Promotion**: Utilizing explicit `$id` declarations promotes the schema to the Global Registry. This effectively creates strictly-typed code-generator universes (e.g., generating an `InvoiceNotificationMetadata` Dart class) operating cleanly inside unstructured Postgres JSONB columns.
+    *   **Global Schema Registration**: Roots must be attached to the top-level keys mapped from the `types`, `enums`, or `puncs` database tables.
     *   They can re-use the standard `type` discriminator locally for `oneOf` polymorphism without conflicting with global Postgres Table constraints.
 
 ### Discriminators & The Dot Convention (A.B)
@@ -50,31 +50,29 @@ In Punc, polymorphic targets like explicit tagged unions or STI (Single Table In
 
 **The 2-Tier Paradigm**: The system inherently prevents "God Tables" by restricting routing to exactly two dimensions, guaranteeing absolute $O(1)$ lookups without ambiguity:
 1. **Vertical Routing (`type`)**: Identifies the specific Postgres Table lineage (e.g. `person` vs `organization`).
-2. **Horizontal Routing (`kind.type`)**: Natively evaluates Single Table Inheritance. The runtime dynamically concatenates `$kind.$type` to yield the namespace-protected schema `$id` (e.g. `light.person`), maintaining collision-free schema registration.
+2. **Horizontal Routing (`kind.type`)**: Natively evaluates Single Table Inheritance. The runtime dynamically concatenates `$kind.$type` to yield the namespace-protected schema key (e.g. `light.person`), maintaining collision-free schema registration.
 
 Therefore, any schema that participates in polymorphic discrimination MUST explicitly define its discriminator properties natively inside its `properties` block. However, to stay DRY and maintain flexible APIs, you **DO NOT** need to hardcode `const` values, nor should you add them to your `required` array. The Punc engine treats `type` and `kind` as **magic properties**.
 
 **Magic Validation Constraints**: 
-* **Dynamically Required**: The system inherently drives the need for their requirement. The Validator dynamically expects the discriminators and structurally bubbles `MISSING_TYPE` ultimata ONLY when a polymorphic router (`$family` / `oneOf`) dynamically requires them to resolve a path. You never manually put them in the JSON schema `required` block.
-* **Implicit Resolution**: When wrapped in `$family` or `oneOf`, the polymorphic router can mathematically parse the schema `$id` (e.g. `light.person`) and natively validate that `type` equals `"person"` and `kind` equals `"light"`, bubbling `CONST_VIOLATED` if they mismatch, all without you ever hardcoding `const` limitations.
+* **Dynamically Required**: The system inherently drives the need for their requirement. The Validator dynamically expects the discriminators and structurally bubbles `MISSING_TYPE` ultimata ONLY when a polymorphic router (`family` / `oneOf`) dynamically requires them to resolve a path. You never manually put them in the JSON schema `required` block.
+* **Implicit Resolution**: When wrapped in `family` or `oneOf`, the polymorphic router can mathematically parse the schema key (e.g. `light.person`) and natively validate that `type` equals `"person"` and `kind` equals `"light"`, bubbling `CONST_VIOLATED` if they mismatch, all without you ever hardcoding `const` limitations.
 * **Generator Explicitness**: Because Postgres is the Single Source of Truth, forcing the explicit definition in `properties` initially guarantees the downstream Dart/Go code generators observe the fields and can cleanly serialize them dynamically back to the server.
 
-For example, a schema representing `$id: "light.person"` must natively define its own structural boundaries:
+For example, a schema registered under the exact key `"light.person"` inside the database registry must natively define its own structural boundaries:
 ```json
 {
-  "$id": "light.person",
   "type": "person", 
   "properties": {
     "type": { "type": "string" },
     "kind": { "type": "string" }
-  },
-  "required": ["type", "kind"]
+  }
 }
 ```
 
-*   **The Object Contract (Presence)**: The Object enforces its own structural integrity mechanically. Standard JSON Validation natively ensures `type` and `kind` are present, bubbling `REQUIRED_FIELD_MISSING` organically if omitted.
-*   **The Dynamic Values (`db.types`)**: Because the `type` and `kind` properties technically exist, the Punc engine dynamically intercepts them during `validate_object`. It mathematically parses the schema `$id` (e.g. `light.person`) and natively validates that `type` equals `"person"` (or a valid descendant in `db.types`) and `kind` equals `"light"`, bubbling `CONST_VIOLATED` if they mismatch.
-*   **The Routing Contract**: When wrapped in `$family` or `oneOf`, the polymorphic router can execute Lightning Fast $O(1)$ fast-paths by reading the payload's `type`/`kind` identifiers, and gracefully fallback to standard structural failure if omitted.
+*   **The Object Contract (Presence)**: The Object enforces its own structural integrity mechanically. Standard JSON Validation natively ensures `type` and `kind` are dynamically present as expected.
+*   **The Dynamic Values (`db.types`)**: Because the `type` and `kind` properties technically exist, the Punc engine dynamically intercepts them during `validate_object`. It mathematically parses the schema key (e.g. `light.person`) and natively validates that `type` equals `"person"` (or a valid descendant in `db.types`) and `kind` equals `"light"`, bubbling `CONST_VIOLATED` if they mismatch.
+*   **The Routing Contract**: When wrapped in `family` or `oneOf`, the polymorphic router can execute Lightning Fast $O(1)$ fast-paths by reading the payload's `type`/`kind` identifiers, and gracefully fallback to standard structural failure if omitted.
 
 ### Composition & Inheritance (The `type` keyword)
 Punc completely abandons the standard JSON Schema `$ref` keyword. Instead, it overloads the exact same `type` keyword used for primitives. A `"type"` in Punc is mathematically evaluated as either a Native Primitive (`"string"`, `"null"`) or a Custom Object Pointer (`"budget"`, `"user"`).
@@ -83,12 +81,27 @@ Punc completely abandons the standard JSON Schema `$ref` keyword. Instead, it ov
 *   **Primitive Array Shorthand (Optionality)**: The `type` array syntax is heavily optimized for nullable fields. Defining `"type": ["budget", "null"]` natively builds a nullable strict, generating `Budget? budget;` in Dart. You can freely mix primitives like `["string", "number", "null"]`.
     *   **Strict Array Constraint**: To explicitly prevent mathematically ambiguous Multiple Inheritance, a `type` array is strictly constrained to at most **ONE** Custom Object Pointer. Defining `"type": ["person", "organization"]` will intentionally trigger a fatal database compilation error natively instructing developers to build a proper tagged union (`oneOf`) instead.
 
-### Polymorphism (`$family` and `oneOf`)
-Polymorphism is how an object boundary can dynamically take on entirely different shapes based on the payload provided at runtime.
-*   **`$family` (Target-Based Polymorphism)**: An explicit Punc compiler macro instructing the database compiler to dynamically search its internal `db.descendants` registry and find all physical schemas that mathematically resolve to the target. 
-    *   *Across Tables (Vertical)*: If `$family: entity` is requested, the payload's `type` field acts as the discriminator, dynamically routing to standard variations like `organization` or `person` spanning multiple Postgres tables.
-    *   *Single Table (Horizontal)*: If `$family: widget` is requested, the router explicitly evaluates the Dot Convention dynamically. If the payload possesses `"type": "widget"` and `"kind": "stock"`, the router mathematically resolves to the string `"stock.widget"` and routes exclusively to that explicit `JSPG` schema.
-*   **`oneOf` (Strict Tagged Unions)**: A hardcoded array of JSON Schema candidate options. Punc strictly bans mathematical "Union of Sets" evaluation. Every `oneOf` candidate item MUST either be a pure primitive (`{ "type": "null" }`) or a user-defined Object Pointer providing a specific discriminator (e.g., `{ "type": "invoice_metadata" }`). This ensures validations remain pure $O(1)$ fast-paths and allows the Dart generator to emit pristine `sealed classes`.
+### Polymorphism (`family` and `oneOf`)
+Polymorphism is how an object boundary can dynamically take on entirely different shapes based on the payload provided at runtime. Punc utilizes the static database metadata generated from Postgres (`db.types`) to enforce these boundaries deterministically, rather than relying on ambiguous tree-traversals.
+
+*   **`family` (Target-Based Polymorphism)**: An explicit Punc compiler macro instructing the engine to resolve dynamic options against the registered database `types` variations or its inner schema registry. It uses the exact physical constraints of the database to build SQL and validation routes.
+    *   **Scenario A: Global Tables (Vertical Routing)**
+        *   *Setup*: `{ "family": "organization" }`
+        *   *Execution*: The engine queries `db.types.get("organization").variations` and finds `["bot", "organization", "person"]`. Because organizations are structurally table-backed, the `family` automatically uses `type` as the discriminator.
+        *   *Options*: `bot` -> `bot`, `person` -> `person`, `organization` -> `organization`.
+    *   **Scenario B: Prefixed Tables (Vertical Projection)**
+        *   *Setup*: `{ "family": "light.organization" }`
+        *   *Execution*: The engine sees the prefix `light.` and base `organization`. It queries `db.types.get("organization").variations` and dynamically prepends the prefix to discover the relevant UI schemas.
+        *   *Options*: `person` -> `light.person`, `organization` -> `light.organization`. (If a projection like `light.bot` does not exist in `db.schemas`, it is safely ignored).
+    *   **Scenario C: Single Table Inheritance (Horizontal Routing)**
+        *   *Setup*: `{ "family": "widget" }` (Where `widget` is a table type but has no external variations).
+        *   *Execution*: The engine queries `db.types.get("widget").variations` and finds only `["widget"]`. Since it lacks table inheritance, it is treated as STI. The engine scans the specific, confined `schemas` array directly under `db.types.get("widget")` for any registered key terminating in the base `.widget` (e.g., `stock.widget`). The `family` automatically uses `kind` as the discriminator.
+        *   *Options*: `stock` -> `stock.widget`, `tasks` -> `tasks.widget`.
+
+*   **`oneOf` (Strict Tagged Unions)**: A hardcoded list of candidate schemas. Unlike `family` which relies on global DB metadata, `oneOf` forces pure mathematical structural evaluation of the provided candidates. It strictly bans typical JSON Schema "Union of Sets" fallback searches. Every candidate MUST possess a mathematically unique discriminator payload to allow $O(1)$ routing.
+    *   **Disjoint Types**: `oneOf: [{ "type": "person" }, { "type": "widget" }]`. The engine succeeds because the native `type` acts as a unique discriminator (`"person"` vs `"widget"`).
+    *   **STI Types**: `oneOf: [{ "type": "heavy.person" }, { "type": "light.person" }]`. The engine succeeds. Even though both share `"type": "person"`, their explicit discriminator is `kind` (`"heavy"` vs `"light"`), ensuring unique $O(1)$ fast-paths.
+    *   **Conflicting Types**: `oneOf: [{ "type": "person" }, { "type": "light.person" }]`. The engine **fails compilation natively**. Both schemas evaluate to `"type": "person"` and neither provides a disjoint `kind` constraint, making them mathematically ambiguous and impossible to route in $O(1)$ time.
 
 ### Conditionals (`cases`)
 Standard JSON Schema forces developers to write deeply nested `allOf` -> `if` -> `properties` blocks just to execute conditional branching. **JSPG completely abandons `allOf` and this practice.** For declarative business logic and structural mutations conditionally based upon property bounds, use the top-level `cases` array. 
@@ -97,7 +110,6 @@ It evaluates as an **Independent Declarative Rules Engine**. Every `Case` block
 
 ```json
 {
-  "$id": "save_external_account",
   "cases": [
     {
       "when": {
@@ -156,10 +168,11 @@ When compiling nested object graphs or arrays, the JSPG engine must dynamically
 5.  **Implicit Base Fallback (1:M)**: If no explicit prefix matches, and M:M deduction fails, the compiler filters for exactly one remaining relation with a `null` prefix (e.g. `fk_invoice_line_invoice` -> `prefix: null`). A `null` prefix mathematically denotes the core structural parent-child ownership edge and is used safely as a fallback.
 6.  **Deterministic Abort**: If the engine exhausts all deduction pathways and the edge remains ambiguous, it explicitly aborts schema compilation (`returns None`) rather than silently generating unpredictable SQL.
 
-### Ad-Hoc Schema Promotion
-To seamlessly support deeply nested, inline Object definitions that don't declare an explicit `$id`, JSPG aggressively promotes them to standalone topological entities during the database compilation phase. 
-*   **Hash Generation:** While evaluating the unified graph, if the compiler enters an `Object` or `Array` structure completely lacking an `$id`, it dynamically calculates a localized hash alias representing exactly its structural constraints.
-*   **Promotion:** This inline chunk is mathematically elevated to its own `$id` in the `db.schemas` cache registry. This guarantees that $O(1)$ WebSockets or isolated queries can natively target any arbitrary sub-object of a massive database topology directly without recursively re-parsing its parent's AST block every read.
+### Subschema Promotion
+To seamlessly support deeply nested Object and Array structures, JSPG aggressively promotes them to standalone topological entities during the database compilation phase. 
+*   **Path Generation:** While evaluating a unified graph originating from a base `types`, `enums`, or `puncs` key, the compiler tracks its exact path descent into nested objects and arrays. It dynamically calculates a localized alias string by appending a `/` pathing syntax (e.g., `base_schema_key/nested/path`) representing exactly its structural constraints.
+*   **Promotion:** This nested subschema chunk is mathematically elevated to its own independent key in the `db.schemas` cache registry using its full path. This guarantees that $O(1)$ WebSockets or isolated queries can natively target any arbitrary nested sub-object of a massive database topology directly without recursively re-parsing its parent's AST block every read. Note that you cannot use the `type` attribute to statically inherit from these automatically promoted subschemas.
+*   **Primitive Confinement:** Purely scalar or primitive branches (like `oneOf: [{type: "string"}, {type: "null"}]`) bypass global topological promotion. They are evaluated directly within the execution engine via isolated Tuple Indexes to explicitly protect the global DB Registry and Go Mixer from memory bloat.
 
 ---
 
@@ -174,9 +187,10 @@ The Validator provides strict, schema-driven evaluation for the "Punc" architect
 JSPG implements specific extensions to the Draft 2020-12 standard to support the Punc architecture's object-oriented needs while heavily optimizing for zero-runtime lookups.
 
 *   **Caching Strategy**: The Validator caches the pre-compiled `Database` registry in memory upon initialization (`jspg_setup`). This registry holds the comprehensive graph of schema boundaries, Types, ENUMs, and Foreign Key relationships, acting as the Single Source of Truth for all validation operations without polling Postgres.
-*   **Discriminator Fast Paths & Extraction**: When executing a polymorphic node (`oneOf` or `$family`), the engine statically analyzes the incoming JSON payload for the literal `type` and `kind` string coordinates. It routes the evaluation specifically to matching candidates in $O(1)$ while returning `MISSING_TYPE` ultimata directly.
+*   **Discriminator Fast Paths & Extraction**: When executing a polymorphic node (`oneOf` or `family`), the engine statically analyzes the incoming JSON payload for the literal `type` and `kind` string coordinates. It routes the evaluation specifically to matching candidates in $O(1)$ while returning `MISSING_TYPE` ultimata directly.
 *   **Missing Type Ultimatum**: If an entity logically requires a discriminator and the JSON payload omits it, JSPG short-circuits branch execution entirely, bubbling a single, perfectly-pathed `MISSING_TYPE` error back to the UI natively to prevent confusing cascading failures.
 *   **Golden Match Context**: When exactly one structural candidate perfectly maps a discriminator, the Validator exclusively cascades that specific structural error context directly to the user, stripping away all noise generated by other parallel schemas.
+*   **Topological Array Pathing**: Instead of relying on explicit `$id` references or injected properties, array iteration paths are dynamically typed based on their compiler boundary constraints. If the array's `items` schema resolves to a topological table-backed entity (e.g., inheriting via a `family` macro tracked in the global DB catalog), the array locks paths and derives element indexes from their actual UUID paths (`array/widget-1/name`), natively enforcing database continuity. If evaluating isolated ad-hoc JSONB elements, strict numeric indexing is enforced natively (`array/1/name`) preventing synthetic payload manipulation.
 
 ---
 
@@ -220,12 +234,12 @@ The Queryer transforms Postgres into a pre-compiled Semantic Query Engine, desig
 *   **Dynamic Filtering**: Binds parameters natively through `cue.filters` objects. The queryer enforces a strict, structured, MongoDB-style operator syntax to map incoming JSON request constraints directly to their originating structural table columns. Filters support both flat path notation (e.g., `"contacts/is_primary": {...}`) and deeply nested recursive JSON structures (e.g., `{"contacts": {"is_primary": {...}}}`). The queryer recursively traverses and flattens these structures at AST compilation time.
     *   **Equality / Inequality**: `{"$eq": value}`, `{"$ne": value}` automatically map to `=` and `!=`.
     *   **Comparison**: `{"$gt": ...}`, `{"$gte": ...}`, `{"$lt": ...}`, `{"$lte": ...}` directly compile to Postgres comparison operators (`> `, `>=`, `<`, `<=`).
-    *   **Array Inclusion**: `{"$in": [values]}`, `{"$nin": [values]}` use native `jsonb_array_elements_text()` bindings to enforce `IN` and `NOT IN` logic without runtime SQL injection risks.
+    *   **Array Inclusion**: `{"$of": [values]}`, `{"$nof": [values]}` use native `jsonb_array_elements_text()` bindings to enforce `IN` and `NOT IN` logic without runtime SQL injection risks.
     *   **Text Matching (ILIKE)**: Evaluates `$eq` or `$ne` against string fields containing the `%` character natively into Postgres `ILIKE` and `NOT ILIKE` partial substring matches.
     *   **Type Casting**: Safely resolves dynamic combinations by casting values instantly into the physical database types mapped in the schema (e.g. parsing `uuid` bindings to `::uuid`, formatting DateTimes to `::timestamptz`, and numbers to `::numeric`).
-*   **Polymorphic SQL Generation (`$family`)**: Compiles `$family` properties by analyzing the **Physical Database Variations**, *not* the schema descendants.
-    *   **The Dot Convention**: When a schema requests `$family: "target.schema"`, the compiler extracts the base type (e.g. `schema`) and looks up its Physical Table definition.
-    *   **Multi-Table Branching**: If the Physical Table is a parent to other tables (e.g. `organization` has variations `["organization", "bot", "person"]`), the compiler generates a dynamic `CASE WHEN type = '...' THEN ...` query, expanding into `JOIN`s for each variation.
+*   **Polymorphic SQL Generation (`family`)**: Compiles `family` properties by analyzing the **Physical Database Variations**, *not* the schema descendants.
+    *   **The Dot Convention**: When a schema requests `family: "target.schema"`, the compiler extracts the base type (e.g. `schema`) and looks up its Physical Table definition.
+    *   **Multi-Table Branching**: If the Physical Table is a parent to other tables (e.g. `organization` has variations `["organization", "bot", "person"]`), the compiler generates a dynamic `CASE WHEN type = '...' THEN ...` query, expanding into sub-queries for each variation. To ensure safe resolution, the compiler dynamically evaluates correlation boundaries: it attempts standard Relational Edge discovery first. If no explicit relational edge exists (indicating pure Table Inheritance rather than a standard foreign-key graph relationship), it safely invokes a **Table Parity Fallback**. This generates an explicit ID correlation constraint (`AND inner.id = outer.id`), perfectly binding the structural variations back to the parent row to eliminate Cartesian products.
     *   **Single-Table Bypass**: If the Physical Table is a leaf node with only one variation (e.g. `person` has variations `["person"]`), the compiler cleanly bypasses `CASE` generation and compiles a simple `SELECT` across the base table, as all schema extensions (e.g. `light.person`, `full.person`) are guaranteed to reside in the exact same physical row.
 
 ---

fixtures/additionalProperties.json

@@ -2,9 +2,8 @@
   {
     "description": "additionalProperties validates properties not matched by properties",
     "database": {
-      "schemas": [
-        {
-          "$id": "schema1",
+      "schemas": {
+        "schema1": {
           "properties": {
             "foo": {
               "type": "string"
@@ -17,7 +16,7 @@
             "type": "boolean"
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -62,8 +61,8 @@
   {
     "description": "extensible: true with additionalProperties still validates structure",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "additionalProperties_1_0": {
           "properties": {
             "foo": {
               "type": "string"
@@ -72,10 +71,9 @@
           "extensible": true,
           "additionalProperties": {
             "type": "integer"
-          },
-          "$id": "additionalProperties_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -108,9 +106,8 @@
   {
     "description": "complex additionalProperties with object and array items",
     "database": {
-      "schemas": [
-        {
-          "$id": "schema3",
+      "schemas": {
+        "schema3": {
           "properties": {
             "type": {
               "type": "string"
@@ -123,7 +120,7 @@
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/booleanSchema.json

@@ -2,11 +2,9 @@
   {
     "description": "boolean schema 'true'",
     "database": {
-      "schemas": [
-        {
-          "$id": "booleanSchema_0_0"
-        }
-      ]
+      "schemas": {
+        "booleanSchema_0_0": {}
+      }
     },
     "tests": [
       {
@@ -99,12 +97,11 @@
   {
     "description": "boolean schema 'false'",
     "database": {
-      "schemas": [
-        {
-          "not": {},
-          "$id": "booleanSchema_1_0"
+      "schemas": {
+        "booleanSchema_1_0": {
+          "not": {}
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/cases.json

@@ -2,87 +2,193 @@
   {
     "description": "Multi-Paradigm Declarative Cases",
     "database": {
-      "schemas": [
-        {
-          "$id": "parallel_rules",
+      "schemas": {
+        "parallel_rules": {
           "type": "object",
           "properties": {
-            "status": { "type": "string" },
-            "kind": { "type": "string" }
-          },
-          "cases": [
-            {
-              "when": { "properties": { "status": {"const": "unverified"} }, "required": ["status"] },
-              "then": { 
-                "properties": {
-                  "amount_1": {"type": "number"},
-                  "amount_2": {"type": "number"}
-                },
-                "required": ["amount_1", "amount_2"] 
-              }
+            "status": {
+              "type": "string"
             },
-            {
-              "when": { "properties": { "kind": {"const": "credit"} }, "required": ["kind"] },
-              "then": { 
-                "properties": {
-                  "cvv": {"type": "number"}
-                },
-                "required": ["cvv"] 
-              }
+            "kind": {
+              "type": "string"
             }
-          ]
-        },
-        {
-          "$id": "mutually_exclusive",
-          "type": "object",
-          "properties": {
-            "type": { "type": "string" }
           },
           "cases": [
             {
-              "when": { "properties": { "type": {"const": "A"} }, "required": ["type"] },
-              "then": { 
-                "properties": { "field_a": {"type": "number"} },
-                "required": ["field_a"] 
-              }
-            },
-            {
-              "when": { "properties": { "type": {"const": "B"} }, "required": ["type"] },
-              "then": { 
-                "properties": { "field_b": {"type": "number"} },
-                "required": ["field_b"] 
+              "when": {
+                "properties": {
+                  "status": {
+                    "const": "unverified"
+                  }
+                },
+                "required": [
+                  "status"
+                ]
               },
-              "else": { 
-                "properties": { "fallback_b": {"type": "number"} },
-                "required": ["fallback_b"] 
+              "then": {
+                "properties": {
+                  "amount_1": {
+                    "type": "number"
+                  },
+                  "amount_2": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "amount_1",
+                  "amount_2"
+                ]
+              }
+            },
+            {
+              "when": {
+                "properties": {
+                  "kind": {
+                    "const": "credit"
+                  }
+                },
+                "required": [
+                  "kind"
+                ]
+              },
+              "then": {
+                "properties": {
+                  "cvv": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "cvv"
+                ]
               }
             }
           ]
         },
-        {
-          "$id": "nested_fallbacks",
+        "mutually_exclusive": {
           "type": "object",
           "properties": {
-            "tier": { "type": "string" }
+            "type": {
+              "type": "string"
+            }
           },
           "cases": [
             {
-              "when": { "properties": { "tier": {"const": "1"} }, "required": ["tier"] },
-              "then": { 
-                "properties": { "basic": {"type": "number"} },
-                "required": ["basic"] 
+              "when": {
+                "properties": {
+                  "type": {
+                    "const": "A"
+                  }
+                },
+                "required": [
+                  "type"
+                ]
+              },
+              "then": {
+                "properties": {
+                  "field_a": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "field_a"
+                ]
+              }
+            },
+            {
+              "when": {
+                "properties": {
+                  "type": {
+                    "const": "B"
+                  }
+                },
+                "required": [
+                  "type"
+                ]
+              },
+              "then": {
+                "properties": {
+                  "field_b": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "field_b"
+                ]
+              },
+              "else": {
+                "properties": {
+                  "fallback_b": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "fallback_b"
+                ]
+              }
+            }
+          ]
+        },
+        "nested_fallbacks": {
+          "type": "object",
+          "properties": {
+            "tier": {
+              "type": "string"
+            }
+          },
+          "cases": [
+            {
+              "when": {
+                "properties": {
+                  "tier": {
+                    "const": "1"
+                  }
+                },
+                "required": [
+                  "tier"
+                ]
+              },
+              "then": {
+                "properties": {
+                  "basic": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "basic"
+                ]
               },
               "else": {
                 "cases": [
                   {
-                    "when": { "properties": { "tier": {"const": "2"} }, "required": ["tier"] },
-                    "then": { 
-                      "properties": { "standard": {"type": "number"} },
-                      "required": ["standard"] 
+                    "when": {
+                      "properties": {
+                        "tier": {
+                          "const": "2"
+                        }
+                      },
+                      "required": [
+                        "tier"
+                      ]
                     },
-                    "else": { 
-                      "properties": { "premium": {"type": "number"} },
-                      "required": ["premium"] 
+                    "then": {
+                      "properties": {
+                        "standard": {
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "standard"
+                      ]
+                    },
+                    "else": {
+                      "properties": {
+                        "premium": {
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "premium"
+                      ]
                     }
                   }
                 ]
@@ -90,94 +196,159 @@
             }
           ]
         },
-        {
-          "$id": "missing_when",
+        "missing_when": {
           "type": "object",
           "cases": [
             {
-              "else": { 
-                "properties": { "unconditional": {"type": "number"} },
-                "required": ["unconditional"] 
+              "else": {
+                "properties": {
+                  "unconditional": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "unconditional"
+                ]
               }
             }
           ]
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "Fires only the first rule successfully",
-        "data": { "status": "unverified", "amount_1": 1, "amount_2": 2 },
+        "data": {
+          "status": "unverified",
+          "amount_1": 1,
+          "amount_2": 2
+        },
         "schema_id": "parallel_rules",
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Fires both independent parallel rules flawlessly",
-        "data": { "status": "unverified", "kind": "credit", "amount_1": 1, "amount_2": 2, "cvv": 123 },
+        "data": {
+          "status": "unverified",
+          "kind": "credit",
+          "amount_1": 1,
+          "amount_2": 2,
+          "cvv": 123
+        },
         "schema_id": "parallel_rules",
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Catches errors triggered concurrently by multiple independent blocked rules",
-        "data": { "status": "unverified", "kind": "credit" },
+        "data": {
+          "status": "unverified",
+          "kind": "credit"
+        },
         "schema_id": "parallel_rules",
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
-            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "amount_1" } },
-            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "amount_2" } },
-            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "cvv" } }
+            {
+              "code": "REQUIRED_FIELD_MISSING",
+              "details": {
+                "path": "amount_1"
+              }
+            },
+            {
+              "code": "REQUIRED_FIELD_MISSING",
+              "details": {
+                "path": "amount_2"
+              }
+            },
+            {
+              "code": "REQUIRED_FIELD_MISSING",
+              "details": {
+                "path": "cvv"
+              }
+            }
           ]
         }
       },
       {
         "description": "STRICT_PROPERTY_VIOLATION throws if an un-triggered then property is submitted",
-        "data": { "status": "verified", "cvv": 123 },
+        "data": {
+          "status": "verified",
+          "cvv": 123
+        },
         "schema_id": "parallel_rules",
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
-            { "code": "STRICT_PROPERTY_VIOLATION", "details": { "path": "cvv" } }
+            {
+              "code": "STRICT_PROPERTY_VIOLATION",
+              "details": {
+                "path": "cvv"
+              }
+            }
           ]
         }
       },
       {
         "description": "Successfully routes mutually exclusive properties seamlessly",
-        "data": { "type": "A", "field_a": 1, "fallback_b": 2 },
+        "data": {
+          "type": "A",
+          "field_a": 1,
+          "fallback_b": 2
+        },
         "schema_id": "mutually_exclusive",
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Nested fallbacks execute seamlessly",
-        "data": { "tier": "3", "premium": 1 },
+        "data": {
+          "tier": "3",
+          "premium": 1
+        },
         "schema_id": "nested_fallbacks",
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "A case without a when executes its else indiscriminately",
-        "data": { "unconditional": 1 },
+        "data": {
+          "unconditional": 1
+        },
         "schema_id": "missing_when",
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "A case without a when throws if else unconditionally requires field",
-        "data": { },
+        "data": {},
         "schema_id": "missing_when",
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
-            { "code": "REQUIRED_FIELD_MISSING", "details": { "path": "unconditional" } }
+            {
+              "code": "REQUIRED_FIELD_MISSING",
+              "details": {
+                "path": "unconditional"
+              }
+            }
           ]
         }
       }
     ]
   }
-]
+]

fixtures/const.json

@@ -2,12 +2,11 @@
   {
     "description": "const validation",
     "database": {
-      "schemas": [
-        {
-          "const": 2,
-          "$id": "const_0_0"
+      "schemas": {
+        "const_0_0": {
+          "const": 2
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -42,8 +41,8 @@
   {
     "description": "const with object",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_1_0": {
           "const": {
             "foo": "bar",
             "baz": "bax"
@@ -51,10 +50,9 @@
           "properties": {
             "foo": {},
             "baz": {}
-          },
-          "$id": "const_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -109,16 +107,15 @@
   {
     "description": "const with array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_2_0": {
           "const": [
             {
               "foo": "bar"
             }
-          ],
-          "$id": "const_2_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -163,12 +160,11 @@
   {
     "description": "const with null",
     "database": {
-      "schemas": [
-        {
-          "const": null,
-          "$id": "const_3_0"
+      "schemas": {
+        "const_3_0": {
+          "const": null
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -194,12 +190,11 @@
   {
     "description": "const with false does not match 0",
     "database": {
-      "schemas": [
-        {
-          "const": false,
-          "$id": "const_4_0"
+      "schemas": {
+        "const_4_0": {
+          "const": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -234,12 +229,11 @@
   {
     "description": "const with true does not match 1",
     "database": {
-      "schemas": [
-        {
-          "const": true,
-          "$id": "const_5_0"
+      "schemas": {
+        "const_5_0": {
+          "const": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -274,14 +268,13 @@
   {
     "description": "const with [false] does not match [0]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_6_0": {
           "const": [
             false
-          ],
-          "$id": "const_6_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -322,14 +315,13 @@
   {
     "description": "const with [true] does not match [1]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_7_0": {
           "const": [
             true
-          ],
-          "$id": "const_7_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -370,14 +362,13 @@
   {
     "description": "const with {\"a\": false} does not match {\"a\": 0}",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_8_0": {
           "const": {
             "a": false
-          },
-          "$id": "const_8_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -418,14 +409,13 @@
   {
     "description": "const with {\"a\": true} does not match {\"a\": 1}",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_9_0": {
           "const": {
             "a": true
-          },
-          "$id": "const_9_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -466,12 +456,11 @@
   {
     "description": "const with 0 does not match other zero-like types",
     "database": {
-      "schemas": [
-        {
-          "const": 0,
-          "$id": "const_10_0"
+      "schemas": {
+        "const_10_0": {
+          "const": 0
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -533,12 +522,11 @@
   {
     "description": "const with 1 does not match true",
     "database": {
-      "schemas": [
-        {
-          "const": 1,
-          "$id": "const_11_0"
+      "schemas": {
+        "const_11_0": {
+          "const": 1
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -573,12 +561,11 @@
   {
     "description": "const with -2.0 matches integer and float types",
     "database": {
-      "schemas": [
-        {
-          "const": -2,
-          "$id": "const_12_0"
+      "schemas": {
+        "const_12_0": {
+          "const": -2
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -631,12 +618,11 @@
   {
     "description": "float and integers are equal up to 64-bit representation limits",
     "database": {
-      "schemas": [
-        {
-          "const": 9007199254740992,
-          "$id": "const_13_0"
+      "schemas": {
+        "const_13_0": {
+          "const": 9007199254740992
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -680,12 +666,11 @@
   {
     "description": "nul characters in strings",
     "database": {
-      "schemas": [
-        {
-          "const": "hello\u0000there",
-          "$id": "const_14_0"
+      "schemas": {
+        "const_14_0": {
+          "const": "hello\u0000there"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -711,13 +696,12 @@
   {
     "description": "characters with the same visual representation but different codepoint",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_15_0": {
           "const": "μ",
-          "$comment": "U+03BC",
-          "$id": "const_15_0"
+          "$comment": "U+03BC"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -745,13 +729,12 @@
   {
     "description": "characters with the same visual representation, but different number of codepoints",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_16_0": {
           "const": "ä",
-          "$comment": "U+00E4",
-          "$id": "const_16_0"
+          "$comment": "U+00E4"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -779,15 +762,14 @@
   {
     "description": "extensible: true allows extra properties in const object match",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "const_17_0": {
           "const": {
             "a": 1
           },
-          "extensible": true,
-          "$id": "const_17_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/contains.json

@@ -2,15 +2,14 @@
   {
     "description": "contains keyword validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_0_0": {
           "contains": {
             "minimum": 5
           },
-          "items": true,
-          "$id": "contains_0_0"
+          "items": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -89,15 +88,14 @@
   {
     "description": "contains keyword with const keyword",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_1_0": {
           "contains": {
             "const": 5
           },
-          "items": true,
-          "$id": "contains_1_0"
+          "items": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -146,12 +144,11 @@
   {
     "description": "contains keyword with boolean schema true",
     "database": {
-      "schemas": [
-        {
-          "contains": true,
-          "$id": "contains_2_0"
+      "schemas": {
+        "contains_2_0": {
+          "contains": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -179,12 +176,11 @@
   {
     "description": "contains keyword with boolean schema false",
     "database": {
-      "schemas": [
-        {
-          "contains": false,
-          "$id": "contains_3_0"
+      "schemas": {
+        "contains_3_0": {
+          "contains": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -221,17 +217,16 @@
   {
     "description": "items + contains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_4_0": {
           "items": {
             "multipleOf": 2
           },
           "contains": {
             "multipleOf": 3
-          },
-          "$id": "contains_4_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -289,15 +284,14 @@
   {
     "description": "contains with false if subschema",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_5_0": {
           "contains": {
             "if": false,
             "else": true
-          },
-          "$id": "contains_5_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -325,14 +319,13 @@
   {
     "description": "contains with null instance elements",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_6_0": {
           "contains": {
             "type": "null"
-          },
-          "$id": "contains_6_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -351,15 +344,14 @@
   {
     "description": "extensible: true allows non-matching items in contains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_7_0": {
           "contains": {
             "const": 1
           },
-          "extensible": true,
-          "$id": "contains_7_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -379,14 +371,13 @@
   {
     "description": "strict by default: non-matching items in contains are invalid",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "contains_8_0": {
           "contains": {
             "const": 1
-          },
-          "$id": "contains_8_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/content.json

@@ -2,12 +2,11 @@
   {
     "description": "validation of string-encoded content based on media type",
     "database": {
-      "schemas": [
-        {
-          "contentMediaType": "application/json",
-          "$id": "content_0_0"
+      "schemas": {
+        "content_0_0": {
+          "contentMediaType": "application/json"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -42,12 +41,11 @@
   {
     "description": "validation of binary string-encoding",
     "database": {
-      "schemas": [
-        {
-          "contentEncoding": "base64",
-          "$id": "content_1_0"
+      "schemas": {
+        "content_1_0": {
+          "contentEncoding": "base64"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -82,13 +80,12 @@
   {
     "description": "validation of binary-encoded media type documents",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "content_2_0": {
           "contentMediaType": "application/json",
-          "contentEncoding": "base64",
-          "$id": "content_2_0"
+          "contentEncoding": "base64"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -132,8 +129,8 @@
   {
     "description": "validation of binary-encoded media type documents with schema",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "content_3_0": {
           "contentMediaType": "application/json",
           "contentEncoding": "base64",
           "contentSchema": {
@@ -149,10 +146,9 @@
                 "type": "integer"
               }
             }
-          },
-          "$id": "content_3_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/database.json

@@ -15,9 +15,8 @@
           "variations": [
             "org"
           ],
-          "schemas": [
-            {
-              "$id": "full.org",
+          "schemas": {
+            "full.org": {
               "type": "object",
               "properties": {
                 "missing_users": {
@@ -28,7 +27,7 @@
                 }
               }
             }
-          ]
+          }
         },
         {
           "id": "22222222-2222-2222-2222-222222222222",
@@ -42,13 +41,12 @@
           "variations": [
             "user"
           ],
-          "schemas": [
-            {
-              "$id": "full.user",
+          "schemas": {
+            "full.user": {
               "type": "object",
               "properties": {}
             }
-          ]
+          }
         }
       ],
       "relations": []
@@ -84,9 +82,8 @@
           "variations": [
             "parent"
           ],
-          "schemas": [
-            {
-              "$id": "full.parent",
+          "schemas": {
+            "full.parent": {
               "type": "object",
               "properties": {
                 "children": {
@@ -97,7 +94,7 @@
                 }
               }
             }
-          ]
+          }
         },
         {
           "id": "22222222-2222-2222-2222-222222222222",
@@ -111,13 +108,12 @@
           "variations": [
             "child"
           ],
-          "schemas": [
-            {
-              "$id": "full.child",
+          "schemas": {
+            "full.child": {
               "type": "object",
               "properties": {}
             }
-          ]
+          }
         }
       ],
       "relations": [
@@ -167,9 +163,8 @@
           "variations": [
             "invoice"
           ],
-          "schemas": [
-            {
-              "$id": "full.invoice",
+          "schemas": {
+            "full.invoice": {
               "type": "object",
               "properties": {
                 "activities": {
@@ -180,7 +175,7 @@
                 }
               }
             }
-          ]
+          }
         },
         {
           "id": "22222222-2222-2222-2222-222222222222",
@@ -194,13 +189,12 @@
           "variations": [
             "activity"
           ],
-          "schemas": [
-            {
-              "$id": "full.activity",
+          "schemas": {
+            "full.activity": {
               "type": "object",
               "properties": {}
             }
-          ]
+          }
         }
       ],
       "relations": [
@@ -274,9 +268,8 @@
           "variations": [
             "actor"
           ],
-          "schemas": [
-            {
-              "$id": "full.actor",
+          "schemas": {
+            "full.actor": {
               "type": "object",
               "properties": {
                 "ambiguous_edge": {
@@ -287,7 +280,7 @@
                 }
               }
             }
-          ]
+          }
         },
         {
           "id": "22222222-2222-2222-2222-222222222222",
@@ -301,13 +294,12 @@
           "variations": [
             "junction"
           ],
-          "schemas": [
-            {
-              "$id": "empty.junction",
+          "schemas": {
+            "empty.junction": {
               "type": "object",
               "properties": {}
             }
-          ]
+          }
         }
       ],
       "relations": [
@@ -406,5 +398,542 @@
         }
       }
     ]
+  },
+  {
+    "description": "Schema Promotion Accuracy Test",
+    "database": {
+      "puncs": [],
+      "enums": [],
+      "relations": [
+        {
+          "id": "r1",
+          "type": "relation",
+          "constraint": "fk_person_email",
+          "source_type": "person",
+          "source_columns": [
+            "email_id"
+          ],
+          "destination_type": "email_address",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "email"
+        },
+        {
+          "id": "r2",
+          "type": "relation",
+          "constraint": "fk_person_ad_hoc_bubble",
+          "source_type": "person",
+          "source_columns": [
+            "ad_hoc_bubble_id"
+          ],
+          "destination_type": "some_bubble",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "ad_hoc_bubble"
+        },
+        {
+          "id": "r3",
+          "type": "relation",
+          "constraint": "fk_person_generic_bubble",
+          "source_type": "person",
+          "source_columns": [
+            "generic_bubble_id"
+          ],
+          "destination_type": "some_bubble",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "generic_bubble"
+        },
+        {
+          "id": "r4",
+          "type": "relation",
+          "constraint": "fk_person_extended_relations",
+          "source_type": "contact",
+          "source_columns": [
+            "source_id"
+          ],
+          "destination_type": "person",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "extended_relations"
+        },
+        {
+          "id": "r5",
+          "type": "relation",
+          "constraint": "fk_person_standard_relations",
+          "source_type": "contact",
+          "source_columns": [
+            "source_id_2"
+          ],
+          "destination_type": "person",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "standard_relations"
+        },
+        {
+          "id": "r6",
+          "type": "relation",
+          "constraint": "fk_contact_target",
+          "source_type": "contact",
+          "source_columns": [
+            "target_id"
+          ],
+          "destination_type": "email_address",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "target"
+        }
+      ],
+      "types": [
+        {
+          "id": "t1",
+          "type": "type",
+          "name": "person",
+          "module": "core",
+          "source": "person",
+          "hierarchy": [
+            "person"
+          ],
+          "variations": [
+            "person",
+            "student"
+          ],
+          "schemas": {
+            "full.person": {
+              "type": "object",
+              "properties": {
+                "type": {
+                  "type": "string"
+                },
+                "name": {
+                  "type": "string"
+                },
+                "email": {
+                  "family": "email_address"
+                },
+                "generic_bubble": {
+                  "type": "some_bubble"
+                },
+                "ad_hoc_bubble": {
+                  "type": "some_bubble",
+                  "properties": {
+                    "extra_inline_feature": {
+                      "type": "string"
+                    }
+                  }
+                },
+                "tags": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "standard_relations": {
+                  "type": "array",
+                  "items": {
+                    "type": "contact"
+                  }
+                },
+                "extended_relations": {
+                  "type": "array",
+                  "items": {
+                    "type": "contact",
+                    "properties": {
+                      "target": {
+                        "type": "email_address",
+                        "properties": {
+                          "extra_3rd_level": {
+                            "type": "string"
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            },
+            "student.person": {
+              "type": "object",
+              "properties": {
+                "type": {
+                  "type": "string"
+                },
+                "kind": {
+                  "type": "string"
+                },
+                "school": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        },
+        {
+          "id": "t2",
+          "type": "type",
+          "name": "email_address",
+          "module": "core",
+          "source": "email_address",
+          "hierarchy": [
+            "email_address"
+          ],
+          "variations": [
+            "email_address"
+          ],
+          "schemas": {
+            "light.email_address": {
+              "type": "object",
+              "properties": {
+                "address": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        },
+        {
+          "id": "t3",
+          "type": "type",
+          "name": "contact",
+          "module": "core",
+          "source": "contact",
+          "hierarchy": [
+            "contact"
+          ],
+          "variations": [
+            "contact"
+          ],
+          "schemas": {
+            "full.contact": {
+              "type": "object",
+              "properties": {
+                "id": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        },
+        {
+          "id": "t4",
+          "type": "type",
+          "name": "some_bubble",
+          "module": "core",
+          "source": "some_bubble",
+          "hierarchy": [
+            "some_bubble"
+          ],
+          "variations": [
+            "some_bubble"
+          ],
+          "schemas": {
+            "some_bubble": {
+              "type": "object",
+              "properties": {
+                "bubble_prop": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        }
+      ]
+    },
+    "tests": [
+      {
+        "description": "Assert exact topological schema promotion paths",
+        "action": "compile",
+        "expect": {
+          "success": true,
+          "schemas": {
+            "full.contact": {},
+            "full.contact.filter": {},
+            "full.person": {},
+            "full.person.filter": {},
+            "full.person/ad_hoc_bubble": {},
+            "full.person/extended_relations": {},
+            "full.person/extended_relations/target": {},
+            "light.email_address": {},
+            "light.email_address.filter": {},
+            "some_bubble": {},
+            "some_bubble.filter": {},
+            "student.person": {},
+            "student.person.filter": {}
+          }
+        }
+      }
+    ]
+  },
+  {
+    "description": "JSONB boundaries",
+    "database": {
+      "relations": [
+        {
+          "id": "33333333-3333-3333-3333-333333333333",
+          "type": "relation",
+          "constraint": "fk_invoice_line_invoice",
+          "source_type": "invoice_line",
+          "source_columns": [
+            "invoice_id"
+          ],
+          "destination_type": "invoice",
+          "destination_columns": [
+            "id"
+          ]
+        }
+      ],
+      "types": [
+        {
+          "name": "entity",
+          "hierarchy": [
+            "entity"
+          ],
+          "grouped_fields": {
+            "entity": [
+              "id",
+              "type",
+              "archived",
+              "created_at"
+            ]
+          },
+          "field_types": {
+            "id": "uuid",
+            "archived": "boolean",
+            "created_at": "timestamptz",
+            "type": "text"
+          },
+          "schemas": {
+            "entity": {
+              "type": "object",
+              "properties": {
+                "id": {
+                  "type": "string",
+                  "format": "uuid"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "archived": {
+                  "type": "boolean"
+                },
+                "created_at": {
+                  "type": "string",
+                  "format": "date-time"
+                },
+                "created": {
+                  "type": "boolean"
+                }
+              }
+            }
+          },
+          "fields": [
+            "id",
+            "type",
+            "archived",
+            "created_at"
+          ],
+          "variations": [
+            "entity",
+            "invoice",
+            "invoice_line"
+          ]
+        },
+        {
+          "name": "invoice",
+          "schemas": {
+            "invoice": {
+              "type": "entity",
+              "properties": {
+                "total": {
+                  "type": "number"
+                },
+                "lines": {
+                  "type": "array",
+                  "items": {
+                    "type": "invoice_line"
+                  }
+                },
+                "metadata_line": {
+                  "type": "invoice_line"
+                },
+                "metadata_lines": {
+                  "type": "array",
+                  "items": {
+                    "type": "invoice_line"
+                  }
+                },
+                "metadata_nested_line": {
+                  "type": "object",
+                  "properties": {
+                    "line": {
+                      "type": "invoice_line"
+                    }
+                  }
+                },
+                "metadata_nested_lines": {
+                  "type": "object",
+                  "properties": {
+                    "lines": {
+                      "type": "array",
+                      "items": {
+                        "type": "invoice_line"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          },
+          "hierarchy": [
+            "invoice",
+            "entity"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "total",
+            "metadata_line",
+            "metadata_lines",
+            "metadata_nested_line",
+            "metadata_nested_lines",
+            "created_at",
+            "created_by",
+            "modified_at",
+            "modified_by",
+            "archived"
+          ],
+          "grouped_fields": {
+            "invoice": [
+              "id",
+              "type",
+              "total",
+              "metadata_line",
+              "metadata_lines",
+              "metadata_nested_line",
+              "metadata_nested_lines"
+            ],
+            "entity": [
+              "id",
+              "type",
+              "created_at",
+              "created_by",
+              "modified_at",
+              "modified_by",
+              "archived"
+            ]
+          },
+          "lookup_fields": [
+            "id"
+          ],
+          "historical": true,
+          "relationship": false,
+          "field_types": {
+            "id": "uuid",
+            "type": "text",
+            "archived": "boolean",
+            "total": "numeric",
+            "metadata_line": "jsonb",
+            "metadata_lines": "jsonb",
+            "metadata_nested_line": "jsonb",
+            "metadata_nested_lines": "jsonb",
+            "created_at": "timestamptz",
+            "created_by": "uuid",
+            "modified_at": "timestamptz",
+            "modified_by": "uuid"
+          },
+          "variations": [
+            "invoice"
+          ]
+        },
+        {
+          "name": "invoice_line",
+          "schemas": {
+            "invoice_line": {
+              "type": "entity",
+              "properties": {
+                "invoice_id": {
+                  "type": "string"
+                },
+                "price": {
+                  "type": "number"
+                }
+              }
+            }
+          },
+          "hierarchy": [
+            "invoice_line",
+            "entity"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "invoice_id",
+            "price",
+            "created_at",
+            "created_by",
+            "modified_at",
+            "modified_by",
+            "archived"
+          ],
+          "grouped_fields": {
+            "invoice_line": [
+              "id",
+              "type",
+              "invoice_id",
+              "price"
+            ],
+            "entity": [
+              "id",
+              "type",
+              "created_at",
+              "created_by",
+              "modified_at",
+              "modified_by",
+              "archived"
+            ]
+          },
+          "lookup_fields": [],
+          "historical": true,
+          "relationship": false,
+          "field_types": {
+            "id": "uuid",
+            "type": "text",
+            "archived": "boolean",
+            "invoice_id": "uuid",
+            "price": "numeric",
+            "created_at": "timestamptz",
+            "created_by": "uuid",
+            "modified_at": "timestamptz",
+            "modified_by": "uuid"
+          },
+          "variations": [
+            "invoice_line"
+          ]
+        }
+      ]
+    },
+    "tests": [
+      {
+        "description": "Assert no JSONB paths promoted",
+        "action": "compile",
+        "expect": {
+          "success": true,
+          "schemas": {
+            "entity": {},
+            "entity.filter": {},
+            "invoice": {},
+            "invoice.filter": {},
+            "invoice_line": {},
+            "invoice_line.filter": {}
+          }
+        }
+      }
+    ]
   }
 ]

fixtures/dependencies.json

@@ -2,10 +2,9 @@
   {
     "description": "single dependency (required)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema1": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema1",
           "dependencies": {
             "bar": [
               "foo"
@@ -13,7 +12,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -93,16 +92,15 @@
   {
     "description": "empty dependents",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema2": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema2",
           "dependencies": {
             "bar": []
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -139,10 +137,9 @@
   {
     "description": "multiple dependents required",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema3": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema3",
           "dependencies": {
             "quux": [
               "foo",
@@ -151,7 +148,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -228,10 +225,9 @@
   {
     "description": "dependencies with escaped characters",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema4": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema4",
           "dependencies": {
             "foo\nbar": [
               "foo\rbar"
@@ -242,7 +238,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -297,10 +293,9 @@
   {
     "description": "extensible: true allows extra properties in dependentRequired",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema5": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema5",
           "dependencies": {
             "bar": [
               "foo"
@@ -308,7 +303,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -329,10 +324,9 @@
   {
     "description": "single dependency (schemas, STRICT)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema1": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema1",
           "properties": {
             "foo": true,
             "bar": true
@@ -350,7 +344,7 @@
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -451,10 +445,9 @@
   {
     "description": "single dependency (schemas, EXTENSIBLE)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema2": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema2",
           "properties": {
             "foo": true,
             "bar": true
@@ -473,7 +466,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -492,10 +485,9 @@
   {
     "description": "boolean subschemas",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema3": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema3",
           "properties": {
             "foo": true,
             "bar": true
@@ -505,7 +497,7 @@
             "bar": false
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -556,10 +548,9 @@
   {
     "description": "dependencies with escaped characters",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema4": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema4",
           "properties": {
             "foo\tbar": true,
             "foo'bar": true,
@@ -579,7 +570,7 @@
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -637,10 +628,9 @@
   {
     "description": "dependent subschema incompatible with root (STRICT)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema5": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema5",
           "properties": {
             "foo": {},
             "baz": true
@@ -653,7 +643,7 @@
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -711,10 +701,9 @@
   {
     "description": "dependent subschema incompatible with root (EXTENSIBLE)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "schema_schema6": {
           "$schema": "https://json-schema.org/draft/2020-12/schema",
-          "$id": "schema_schema6",
           "properties": {
             "foo": {},
             "baz": true
@@ -729,7 +718,7 @@
           },
           "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/emptyString.json

@@ -2,8 +2,8 @@
   {
     "description": "empty string is valid for all types (except const)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "emptyString_0_0": {
           "properties": {
             "obj": {
               "type": "object"
@@ -36,10 +36,9 @@
             "con_empty": {
               "const": ""
             }
-          },
-          "$id": "emptyString_0_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -142,7 +141,9 @@
           "errors": [
             {
               "code": "CONST_VIOLATED",
-              "details": { "path": "con" }
+              "details": {
+                "path": "con"
+              }
             }
           ]
         }

fixtures/enum.json

@@ -2,16 +2,15 @@
   {
     "description": "simple enum validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_0_0": {
           "enum": [
             1,
             2,
             3
-          ],
-          "$id": "enum_0_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -37,8 +36,8 @@
   {
     "description": "heterogeneous enum validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_1_0": {
           "enum": [
             6,
             "foo",
@@ -50,10 +49,9 @@
           ],
           "properties": {
             "foo": {}
-          },
-          "$id": "enum_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -113,15 +111,14 @@
   {
     "description": "heterogeneous enum-with-null validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_2_0": {
           "enum": [
             6,
             null
-          ],
-          "$id": "enum_2_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -156,8 +153,8 @@
   {
     "description": "enums in properties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_3_0": {
           "type": "object",
           "properties": {
             "foo": {
@@ -173,10 +170,9 @@
           },
           "required": [
             "bar"
-          ],
-          "$id": "enum_3_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -251,15 +247,14 @@
   {
     "description": "enum with escaped characters",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_4_0": {
           "enum": [
             "foo\nbar",
             "foo\rbar"
-          ],
-          "$id": "enum_4_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -294,14 +289,13 @@
   {
     "description": "enum with false does not match 0",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_5_0": {
           "enum": [
             false
-          ],
-          "$id": "enum_5_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -336,16 +330,15 @@
   {
     "description": "enum with [false] does not match [0]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_6_0": {
           "enum": [
             [
               false
             ]
-          ],
-          "$id": "enum_6_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -386,14 +379,13 @@
   {
     "description": "enum with true does not match 1",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_7_0": {
           "enum": [
             true
-          ],
-          "$id": "enum_7_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -428,16 +420,15 @@
   {
     "description": "enum with [true] does not match [1]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_8_0": {
           "enum": [
             [
               true
             ]
-          ],
-          "$id": "enum_8_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -478,14 +469,13 @@
   {
     "description": "enum with 0 does not match false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_9_0": {
           "enum": [
             0
-          ],
-          "$id": "enum_9_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -520,16 +510,15 @@
   {
     "description": "enum with [0] does not match [false]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_10_0": {
           "enum": [
             [
               0
             ]
-          ],
-          "$id": "enum_10_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -570,14 +559,13 @@
   {
     "description": "enum with 1 does not match true",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_11_0": {
           "enum": [
             1
-          ],
-          "$id": "enum_11_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -612,16 +600,15 @@
   {
     "description": "enum with [1] does not match [true]",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_12_0": {
           "enum": [
             [
               1
             ]
-          ],
-          "$id": "enum_12_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -662,14 +649,13 @@
   {
     "description": "nul characters in strings",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_13_0": {
           "enum": [
             "hello\u0000there"
-          ],
-          "$id": "enum_13_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -695,17 +681,16 @@
   {
     "description": "extensible: true allows extra properties in enum object match",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "enum_14_0": {
           "enum": [
             {
               "foo": 1
             }
           ],
-          "extensible": true,
-          "$id": "enum_14_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/exclusiveMaximum.json

@@ -2,12 +2,11 @@
   {
     "description": "exclusiveMaximum validation",
     "database": {
-      "schemas": [
-        {
-          "exclusiveMaximum": 3,
-          "$id": "exclusiveMaximum_0_0"
+      "schemas": {
+        "exclusiveMaximum_0_0": {
+          "exclusiveMaximum": 3
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/exclusiveMinimum.json

@@ -2,12 +2,11 @@
   {
     "description": "exclusiveMinimum validation",
     "database": {
-      "schemas": [
-        {
-          "exclusiveMinimum": 1.1,
-          "$id": "exclusiveMinimum_0_0"
+      "schemas": {
+        "exclusiveMinimum_0_0": {
+          "exclusiveMinimum": 1.1
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/filter.json

@@ -0,0 +1,256 @@
+[
+  {
+    "description": "Filter Synthesis Object-Oriented Composition",
+    "database": {
+      "puncs": [],
+      "enums": [],
+      "relations": [
+        {
+          "id": "rel1",
+          "type": "relation",
+          "constraint": "fk_person_billing_address",
+          "source_type": "person",
+          "source_columns": [
+            "billing_address_id"
+          ],
+          "destination_type": "address",
+          "destination_columns": [
+            "id"
+          ],
+          "prefix": "billing_address"
+        }
+      ],
+      "types": [
+        {
+          "id": "type1",
+          "type": "type",
+          "name": "person",
+          "module": "core",
+          "source": "person",
+          "hierarchy": [
+            "person"
+          ],
+          "variations": [
+            "person"
+          ],
+          "schemas": {
+            "person": {
+              "type": "object",
+              "properties": {
+                "first_name": {
+                  "type": "string"
+                },
+                "age": {
+                  "type": "integer"
+                },
+                "billing_address": {
+                  "type": "address"
+                },
+                "birth_date": {
+                  "type": "string",
+                  "format": "date-time"
+                },
+                "tags": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  }
+                },
+                "ad_hoc": {
+                  "type": "object",
+                  "properties": {
+                    "foo": {
+                      "type": "string"
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "id": "type2",
+          "type": "type",
+          "name": "address",
+          "module": "core",
+          "source": "address",
+          "hierarchy": [
+            "address"
+          ],
+          "variations": [
+            "address"
+          ],
+          "schemas": {
+            "address": {
+              "type": "object",
+              "properties": {
+                "city": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        },
+        {
+          "id": "type3",
+          "type": "type",
+          "name": "search",
+          "module": "core",
+          "source": "search",
+          "hierarchy": [
+            "search"
+          ],
+          "variations": [
+            "search"
+          ],
+          "schemas": {
+            "search": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string"
+                },
+                "filter": {
+                  "type": "filter"
+                }
+              }
+            },
+            "filter": {
+              "type": "object"
+            },
+            "condition": {
+              "type": "object",
+              "properties": {
+                "kind": {
+                  "type": "string"
+                }
+              }
+            },
+            "string.condition": {
+              "type": "condition",
+              "properties": {
+                "$eq": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              }
+            },
+            "integer.condition": {
+              "type": "condition",
+              "properties": {
+                "$eq": {
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                }
+              }
+            },
+            "date.condition": {
+              "type": "condition",
+              "properties": {
+                "$eq": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              }
+            }
+          }
+        }
+      ]
+    },
+    "tests": [
+      {
+        "description": "Assert filter generation map accurately represents strongly typed conditions natively.",
+        "action": "compile",
+        "expect": {
+          "success": true,
+          "schemas": {
+            "person": {},
+            "person.filter": {
+              "type": "filter",
+              "compiledPropertyNames": [
+                "age",
+                "billing_address",
+                "birth_date",
+                "first_name"
+              ],
+              "properties": {
+                "first_name": {
+                  "type": [
+                    "string.condition",
+                    "null"
+                  ]
+                },
+                "age": {
+                  "type": [
+                    "integer.condition",
+                    "null"
+                  ]
+                },
+                "billing_address": {
+                  "type": [
+                    "address.filter",
+                    "null"
+                  ]
+                },
+                "birth_date": {
+                  "type": [
+                    "date.condition",
+                    "null"
+                  ]
+                }
+              }
+            },
+            "address": {},
+            "address.filter": {
+              "type": "filter",
+              "compiledPropertyNames": [
+                "city"
+              ],
+              "properties": {
+                "city": {
+                  "type": [
+                    "string.condition",
+                    "null"
+                  ]
+                }
+              }
+            },
+            "filter": {},
+            "condition": {},
+            "string.condition": {},
+            "integer.condition": {},
+            "date.condition": {},
+            "search": {},
+            "search.filter": {
+              "type": "filter",
+              "compiledPropertyNames": [
+                "filter",
+                "name"
+              ],
+              "properties": {
+                "filter": {
+                  "type": [
+                    "filter.filter",
+                    "null"
+                  ]
+                },
+                "name": {
+                  "type": [
+                    "string.condition",
+                    "null"
+                  ]
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+]

fixtures/format.json

@@ -2,12 +2,11 @@
   {
     "description": "validation of date-time strings",
     "database": {
-      "schemas": [
-        {
-          "format": "date-time",
-          "$id": "format_0_0"
+      "schemas": {
+        "format_0_0": {
+          "format": "date-time"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -249,12 +248,11 @@
   {
     "description": "validation of date strings",
     "database": {
-      "schemas": [
-        {
-          "format": "date",
-          "$id": "format_1_0"
+      "schemas": {
+        "format_1_0": {
+          "format": "date"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -694,12 +692,11 @@
   {
     "description": "validation of duration strings",
     "database": {
-      "schemas": [
-        {
-          "format": "duration",
-          "$id": "format_2_0"
+      "schemas": {
+        "format_2_0": {
+          "format": "duration"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -941,12 +938,11 @@
   {
     "description": "\\a is not an ECMA 262 control escape",
     "database": {
-      "schemas": [
-        {
-          "format": "regex",
-          "$id": "format_3_0"
+      "schemas": {
+        "format_3_0": {
+          "format": "regex"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -963,12 +959,11 @@
   {
     "description": "validation of e-mail addresses",
     "database": {
-      "schemas": [
-        {
-          "format": "email",
-          "$id": "format_4_0"
+      "schemas": {
+        "format_4_0": {
+          "format": "email"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1192,12 +1187,11 @@
   {
     "description": "validation of host names",
     "database": {
-      "schemas": [
-        {
-          "format": "hostname",
-          "$id": "format_5_0"
+      "schemas": {
+        "format_5_0": {
+          "format": "hostname"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1422,12 +1416,11 @@
   {
     "description": "validation of A-label (punycode) host names",
     "database": {
-      "schemas": [
-        {
-          "format": "hostname",
-          "$id": "format_6_0"
+      "schemas": {
+        "format_6_0": {
+          "format": "hostname"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1803,12 +1796,11 @@
   {
     "description": "validation of an internationalized e-mail addresses",
     "database": {
-      "schemas": [
-        {
-          "format": "idn-email",
-          "$id": "format_7_0"
+      "schemas": {
+        "format_7_0": {
+          "format": "idn-email"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1906,12 +1898,11 @@
   {
     "description": "validation of internationalized host names",
     "database": {
-      "schemas": [
-        {
-          "format": "idn-hostname",
-          "$id": "format_8_0"
+      "schemas": {
+        "format_8_0": {
+          "format": "idn-hostname"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -2479,12 +2470,11 @@
       }
     ],
     "database": {
-      "schemas": [
-        {
-          "format": "idn-hostname",
-          "$id": "format_9_0"
+      "schemas": {
+        "format_9_0": {
+          "format": "idn-hostname"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -2672,12 +2662,11 @@
   {
     "description": "validation of IP addresses",
     "database": {
-      "schemas": [
-        {
-          "format": "ipv4",
-          "$id": "format_10_0"
+      "schemas": {
+        "format_10_0": {
+          "format": "ipv4"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -2830,12 +2819,11 @@
   {
     "description": "validation of IPv6 addresses",
     "database": {
-      "schemas": [
-        {
-          "format": "ipv6",
-          "$id": "format_11_0"
+      "schemas": {
+        "format_11_0": {
+          "format": "ipv6"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -3203,12 +3191,11 @@
   {
     "description": "validation of IRI References",
     "database": {
-      "schemas": [
-        {
-          "format": "iri-reference",
-          "$id": "format_12_0"
+      "schemas": {
+        "format_12_0": {
+          "format": "iri-reference"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -3333,12 +3320,11 @@
   {
     "description": "validation of IRIs",
     "database": {
-      "schemas": [
-        {
-          "format": "iri",
-          "$id": "format_13_0"
+      "schemas": {
+        "format_13_0": {
+          "format": "iri"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -3481,12 +3467,11 @@
   {
     "description": "validation of JSON-pointers (JSON String Representation)",
     "database": {
-      "schemas": [
-        {
-          "format": "json-pointer",
-          "$id": "format_14_0"
+      "schemas": {
+        "format_14_0": {
+          "format": "json-pointer"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -3836,12 +3821,11 @@
   {
     "description": "validation of regular expressions",
     "database": {
-      "schemas": [
-        {
-          "format": "regex",
-          "$id": "format_15_0"
+      "schemas": {
+        "format_15_0": {
+          "format": "regex"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -3921,12 +3905,11 @@
   {
     "description": "validation of Relative JSON Pointers (RJP)",
     "database": {
-      "schemas": [
-        {
-          "format": "relative-json-pointer",
-          "$id": "format_16_0"
+      "schemas": {
+        "format_16_0": {
+          "format": "relative-json-pointer"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -4096,12 +4079,11 @@
   {
     "description": "validation of time strings",
     "database": {
-      "schemas": [
-        {
-          "format": "time",
-          "$id": "format_17_0"
+      "schemas": {
+        "format_17_0": {
+          "format": "time"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -4523,12 +4505,11 @@
   {
     "description": "unknown format",
     "database": {
-      "schemas": [
-        {
-          "format": "unknown",
-          "$id": "format_18_0"
+      "schemas": {
+        "format_18_0": {
+          "format": "unknown"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -4599,12 +4580,11 @@
   {
     "description": "validation of URI References",
     "database": {
-      "schemas": [
-        {
-          "format": "uri-reference",
-          "$id": "format_19_0"
+      "schemas": {
+        "format_19_0": {
+          "format": "uri-reference"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -4747,12 +4727,11 @@
   {
     "description": "format: uri-template",
     "database": {
-      "schemas": [
-        {
-          "format": "uri-template",
-          "$id": "format_20_0"
+      "schemas": {
+        "format_20_0": {
+          "format": "uri-template"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -4850,12 +4829,11 @@
   {
     "description": "validation of URIs",
     "database": {
-      "schemas": [
-        {
-          "format": "uri",
-          "$id": "format_21_0"
+      "schemas": {
+        "format_21_0": {
+          "format": "uri"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -5187,12 +5165,11 @@
   {
     "description": "uuid format",
     "database": {
-      "schemas": [
-        {
-          "format": "uuid",
-          "$id": "format_22_0"
+      "schemas": {
+        "format_22_0": {
+          "format": "uuid"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -5398,12 +5375,11 @@
   {
     "description": "period format",
     "database": {
-      "schemas": [
-        {
-          "format": "period",
-          "$id": "format_23_0"
+      "schemas": {
+        "format_23_0": {
+          "format": "period"
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/invoice.json

@@ -5,15 +5,18 @@
       "puncs": [
         {
           "name": "get_invoice",
-          "schemas": [
-            {
-              "$id": "get_invoice.response",
+          "schemas": {
+            "get_invoice.response": {
               "oneOf": [
-                { "type": "invoice" },
-                { "type": "null" }
+                {
+                  "type": "invoice"
+                },
+                {
+                  "type": "null"
+                }
               ]
             }
-          ]
+          }
         }
       ],
       "enums": [],
@@ -23,32 +26,64 @@
           "type": "relation",
           "constraint": "fk_attachment_attachable_entity",
           "source_type": "attachment",
-          "source_columns": ["attachable_id", "attachable_type"],
+          "source_columns": [
+            "attachable_id",
+            "attachable_type"
+          ],
           "destination_type": "entity",
-          "destination_columns": ["id", "type"],
+          "destination_columns": [
+            "id",
+            "type"
+          ],
           "prefix": null
         }
       ],
       "types": [
         {
           "name": "entity",
-          "schemas": [
-            {
-              "$id": "entity",
+          "schemas": {
+            "entity": {
               "type": "object",
               "properties": {
-                "id": { "type": "string", "format": "uuid" },
-                "type": { "type": "string" },
-                "archived": { "type": "boolean" },
-                "created_at": { "type": "string", "format": "date-time" }
+                "id": {
+                  "type": "string",
+                  "format": "uuid"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "archived": {
+                  "type": "boolean"
+                },
+                "created_at": {
+                  "type": "string",
+                  "format": "date-time"
+                }
               }
             }
+          },
+          "hierarchy": [
+            "entity"
+          ],
+          "variations": [
+            "entity",
+            "activity",
+            "invoice",
+            "attachment"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "archived",
+            "created_at"
           ],
-          "hierarchy": ["entity"],
-          "variations": ["entity", "activity", "invoice", "attachment"],
-          "fields": ["id", "type", "archived", "created_at"],
           "grouped_fields": {
-            "entity": ["id", "type", "archived", "created_at"]
+            "entity": [
+              "id",
+              "type",
+              "archived",
+              "created_at"
+            ]
           },
           "field_types": {
             "id": "uuid",
@@ -63,21 +98,42 @@
         },
         {
           "name": "activity",
-          "schemas": [
-            {
-              "$id": "activity",
+          "schemas": {
+            "activity": {
               "type": "entity",
               "properties": {
-                "start_date": { "type": "string", "format": "date-time" }
+                "start_date": {
+                  "type": "string",
+                  "format": "date-time"
+                }
               }
             }
+          },
+          "hierarchy": [
+            "activity",
+            "entity"
+          ],
+          "variations": [
+            "activity",
+            "invoice"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "archived",
+            "created_at",
+            "start_date"
           ],
-          "hierarchy": ["activity", "entity"],
-          "variations": ["activity", "invoice"],
-          "fields": ["id", "type", "archived", "created_at", "start_date"],
           "grouped_fields": {
-            "entity": ["id", "type", "archived", "created_at"],
-            "activity": ["start_date"]
+            "entity": [
+              "id",
+              "type",
+              "archived",
+              "created_at"
+            ],
+            "activity": [
+              "start_date"
+            ]
           },
           "field_types": {
             "id": "uuid",
@@ -93,26 +149,51 @@
         },
         {
           "name": "invoice",
-          "schemas": [
-            {
-              "$id": "invoice",
+          "schemas": {
+            "invoice": {
               "type": "activity",
               "properties": {
-                "status": { "type": "string" },
+                "status": {
+                  "type": "string"
+                },
                 "attachments": {
                   "type": "array",
-                  "items": { "type": "attachment" }
+                  "items": {
+                    "type": "attachment"
+                  }
                 }
               }
             }
+          },
+          "hierarchy": [
+            "invoice",
+            "activity",
+            "entity"
+          ],
+          "variations": [
+            "invoice"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "archived",
+            "created_at",
+            "start_date",
+            "status"
           ],
-          "hierarchy": ["invoice", "activity", "entity"],
-          "variations": ["invoice"],
-          "fields": ["id", "type", "archived", "created_at", "start_date", "status"],
           "grouped_fields": {
-            "entity": ["id", "type", "archived", "created_at"],
-            "activity": ["start_date"],
-            "invoice": ["status"]
+            "entity": [
+              "id",
+              "type",
+              "archived",
+              "created_at"
+            ],
+            "activity": [
+              "start_date"
+            ],
+            "invoice": [
+              "status"
+            ]
           },
           "field_types": {
             "id": "uuid",
@@ -129,26 +210,66 @@
         },
         {
           "name": "attachment",
-          "schemas": [
-            {
-              "$id": "attachment",
+          "schemas": {
+            "attachment": {
               "type": "entity",
               "properties": {
-                "name": { "type": "string" },
-                "attachable_id": { "type": "string", "format": "uuid" },
-                "attachable_type": { "type": "string" },
-                "kind": { "type": "string" },
-                "file": { "type": "string" },
-                "data": { "type": "object" }
+                "name": {
+                  "type": "string"
+                },
+                "attachable_id": {
+                  "type": "string",
+                  "format": "uuid"
+                },
+                "attachable_type": {
+                  "type": "string"
+                },
+                "kind": {
+                  "type": "string"
+                },
+                "file": {
+                  "type": "string"
+                },
+                "data": {
+                  "type": "object"
+                }
               }
             }
+          },
+          "hierarchy": [
+            "attachment",
+            "entity"
+          ],
+          "variations": [
+            "attachment"
+          ],
+          "fields": [
+            "id",
+            "type",
+            "archived",
+            "created_at",
+            "attachable_id",
+            "attachable_type",
+            "kind",
+            "file",
+            "data",
+            "name"
           ],
-          "hierarchy": ["attachment", "entity"],
-          "variations": ["attachment"],
-          "fields": ["id", "type", "archived", "created_at", "attachable_id", "attachable_type", "kind", "file", "data", "name"],
           "grouped_fields": {
-            "entity": ["id", "type", "archived", "created_at"],
-            "attachment": ["attachable_id", "attachable_type", "kind", "file", "data", "name"]
+            "entity": [
+              "id",
+              "type",
+              "archived",
+              "created_at"
+            ],
+            "attachment": [
+              "attachable_id",
+              "attachable_type",
+              "kind",
+              "file",
+              "data",
+              "name"
+            ]
           },
           "field_types": {
             "id": "uuid",

fixtures/items.json

@@ -2,14 +2,13 @@
   {
     "description": "a schema given for items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_0_0": {
           "items": {
             "type": "integer"
-          },
-          "$id": "items_0_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -65,12 +64,11 @@
   {
     "description": "items with boolean schema (true)",
     "database": {
-      "schemas": [
-        {
-          "items": true,
-          "$id": "items_1_0"
+      "schemas": {
+        "items_1_0": {
+          "items": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -100,12 +98,11 @@
   {
     "description": "items with boolean schema (false)",
     "database": {
-      "schemas": [
-        {
-          "items": false,
-          "$id": "items_2_0"
+      "schemas": {
+        "items_2_0": {
+          "items": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -135,8 +132,8 @@
   {
     "description": "items and subitems",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_3_0": {
           "type": "array",
           "items": false,
           "prefixItems": [
@@ -149,11 +146,9 @@
             {
               "type": "item"
             }
-          ],
-          "$id": "items_3_0"
+          ]
         },
-        {
-          "$id": "item",
+        "item": {
           "type": "array",
           "items": false,
           "prefixItems": [
@@ -165,14 +160,13 @@
             }
           ]
         },
-        {
-          "$id": "sub-item",
+        "sub-item": {
           "type": "object",
           "required": [
             "foo"
           ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -374,8 +368,8 @@
   {
     "description": "nested items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_4_0": {
           "type": "array",
           "items": {
             "type": "array",
@@ -388,10 +382,9 @@
                 }
               }
             }
-          },
-          "$id": "items_4_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -507,17 +500,16 @@
   {
     "description": "prefixItems with no additional items allowed",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_5_0": {
           "prefixItems": [
             {},
             {},
             {}
           ],
-          "items": false,
-          "$id": "items_5_0"
+          "items": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -584,8 +576,8 @@
   {
     "description": "items does not look in applicators, valid case",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_6_0": {
           "allOf": [
             {
               "prefixItems": [
@@ -597,10 +589,9 @@
           ],
           "items": {
             "minimum": 5
-          },
-          "$id": "items_6_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -632,8 +623,8 @@
   {
     "description": "prefixItems validation adjusts the starting index for items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_7_0": {
           "prefixItems": [
             {
               "type": "string"
@@ -641,10 +632,9 @@
           ],
           "items": {
             "type": "integer"
-          },
-          "$id": "items_7_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -677,15 +667,14 @@
   {
     "description": "items with heterogeneous array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_8_0": {
           "prefixItems": [
             {}
           ],
-          "items": false,
-          "$id": "items_8_0"
+          "items": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -717,14 +706,13 @@
   {
     "description": "items with null instance elements",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_9_0": {
           "items": {
             "type": "null"
-          },
-          "$id": "items_9_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -743,13 +731,12 @@
   {
     "description": "extensible: true allows extra items (when items is false)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_10_0": {
           "items": false,
-          "extensible": true,
-          "$id": "items_10_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -768,15 +755,14 @@
   {
     "description": "extensible: true allows extra properties for items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_11_0": {
           "items": {
             "minimum": 5
           },
-          "extensible": true,
-          "$id": "items_11_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -807,13 +793,12 @@
   {
     "description": "array: simple extensible array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_12_0": {
           "type": "array",
-          "extensible": true,
-          "$id": "items_12_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -842,13 +827,12 @@
   {
     "description": "array: strict array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_13_0": {
           "type": "array",
-          "extensible": false,
-          "$id": "items_13_0"
+          "extensible": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -876,15 +860,14 @@
   {
     "description": "array: items extensible",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_14_0": {
           "type": "array",
           "items": {
             "extensible": true
-          },
-          "$id": "items_14_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -914,16 +897,15 @@
   {
     "description": "array: items strict",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "items_15_0": {
           "type": "array",
           "items": {
             "type": "object",
             "extensible": false
-          },
-          "$id": "items_15_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/maxContains.json

@@ -2,13 +2,12 @@
   {
     "description": "maxContains without contains is ignored",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxContains_0_0": {
           "maxContains": 1,
-          "extensible": true,
-          "$id": "maxContains_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -39,16 +38,15 @@
   {
     "description": "maxContains with contains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxContains_1_0": {
           "contains": {
             "const": 1
           },
           "maxContains": 1,
-          "extensible": true,
-          "$id": "maxContains_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -113,16 +111,15 @@
   {
     "description": "maxContains with contains, value with a decimal",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxContains_2_0": {
           "contains": {
             "const": 1
           },
           "maxContains": 1,
-          "extensible": true,
-          "$id": "maxContains_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -153,17 +150,16 @@
   {
     "description": "minContains < maxContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxContains_3_0": {
           "contains": {
             "const": 1
           },
           "minContains": 1,
           "maxContains": 3,
-          "extensible": true,
-          "$id": "maxContains_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -206,16 +202,15 @@
   {
     "description": "extensible: true allows non-matching items in maxContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxContains_4_0": {
           "contains": {
             "const": 1
           },
           "maxContains": 1,
-          "extensible": true,
-          "$id": "maxContains_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/maxItems.json

@@ -2,13 +2,12 @@
   {
     "description": "maxItems validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxItems_0_0": {
           "maxItems": 2,
-          "extensible": true,
-          "$id": "maxItems_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -61,13 +60,12 @@
   {
     "description": "maxItems validation with a decimal",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxItems_1_0": {
           "maxItems": 2,
-          "extensible": true,
-          "$id": "maxItems_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -99,13 +97,12 @@
   {
     "description": "extensible: true allows extra items in maxItems (but counted)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxItems_2_0": {
           "maxItems": 2,
-          "extensible": true,
-          "$id": "maxItems_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/maxLength.json

@@ -2,12 +2,11 @@
   {
     "description": "maxLength validation",
     "database": {
-      "schemas": [
-        {
-          "maxLength": 2,
-          "$id": "maxLength_0_0"
+      "schemas": {
+        "maxLength_0_0": {
+          "maxLength": 2
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -60,12 +59,11 @@
   {
     "description": "maxLength validation with a decimal",
     "database": {
-      "schemas": [
-        {
-          "maxLength": 2,
-          "$id": "maxLength_1_0"
+      "schemas": {
+        "maxLength_1_0": {
+          "maxLength": 2
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/maxProperties.json

@@ -2,13 +2,12 @@
   {
     "description": "maxProperties validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxProperties_0_0": {
           "maxProperties": 2,
-          "extensible": true,
-          "$id": "maxProperties_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -83,13 +82,12 @@
   {
     "description": "maxProperties validation with a decimal",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxProperties_1_0": {
           "maxProperties": 2,
-          "extensible": true,
-          "$id": "maxProperties_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -121,13 +119,12 @@
   {
     "description": "maxProperties = 0 means the object is empty",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxProperties_2_0": {
           "maxProperties": 0,
-          "extensible": true,
-          "$id": "maxProperties_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -155,13 +152,12 @@
   {
     "description": "extensible: true allows extra properties in maxProperties (though maxProperties still counts them!)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "maxProperties_3_0": {
           "maxProperties": 2,
-          "extensible": true,
-          "$id": "maxProperties_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/maximum.json

@@ -2,12 +2,11 @@
   {
     "description": "maximum validation",
     "database": {
-      "schemas": [
-        {
-          "maximum": 3,
-          "$id": "maximum_0_0"
+      "schemas": {
+        "maximum_0_0": {
+          "maximum": 3
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -51,12 +50,11 @@
   {
     "description": "maximum validation with unsigned integer",
     "database": {
-      "schemas": [
-        {
-          "maximum": 300,
-          "$id": "maximum_1_0"
+      "schemas": {
+        "maximum_1_0": {
+          "maximum": 300
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/merge.json

@@ -2,25 +2,23 @@
   {
     "description": "merging: properties accumulate",
     "database": {
-      "schemas": [
-        {
-          "$id": "base_0",
+      "schemas": {
+        "base_0": {
           "properties": {
             "base_prop": {
               "type": "string"
             }
           }
         },
-        {
+        "merge_0_0": {
           "type": "base_0",
           "properties": {
             "child_prop": {
               "type": "string"
             }
-          },
-          "$id": "merge_0_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -48,7 +46,9 @@
           "errors": [
             {
               "code": "INVALID_TYPE",
-              "details": { "path": "base_prop" }
+              "details": {
+                "path": "base_prop"
+              }
             }
           ]
         }
@@ -58,9 +58,8 @@
   {
     "description": "merging: required fields accumulate",
     "database": {
-      "schemas": [
-        {
-          "$id": "base_1",
+      "schemas": {
+        "base_1": {
           "properties": {
             "a": {
               "type": "string"
@@ -70,7 +69,7 @@
             "a"
           ]
         },
-        {
+        "merge_1_0": {
           "type": "base_1",
           "properties": {
             "b": {
@@ -79,10 +78,9 @@
           },
           "required": [
             "b"
-          ],
-          "$id": "merge_1_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -109,7 +107,9 @@
           "errors": [
             {
               "code": "REQUIRED_FIELD_MISSING",
-              "details": { "path": "a" }
+              "details": {
+                "path": "a"
+              }
             }
           ]
         }
@@ -126,7 +126,9 @@
           "errors": [
             {
               "code": "REQUIRED_FIELD_MISSING",
-              "details": { "path": "b" }
+              "details": {
+                "path": "b"
+              }
             }
           ]
         }
@@ -136,9 +138,8 @@
   {
     "description": "merging: dependencies accumulate",
     "database": {
-      "schemas": [
-        {
-          "$id": "base_2",
+      "schemas": {
+        "base_2": {
           "properties": {
             "trigger": {
               "type": "string"
@@ -153,7 +154,7 @@
             ]
           }
         },
-        {
+        "merge_2_0": {
           "type": "base_2",
           "properties": {
             "child_dep": {
@@ -164,10 +165,9 @@
             "trigger": [
               "child_dep"
             ]
-          },
-          "$id": "merge_2_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -196,7 +196,9 @@
           "errors": [
             {
               "code": "DEPENDENCY_MISSING",
-              "details": { "path": "" }
+              "details": {
+                "path": ""
+              }
             }
           ]
         }
@@ -214,7 +216,9 @@
           "errors": [
             {
               "code": "DEPENDENCY_MISSING",
-              "details": { "path": "" }
+              "details": {
+                "path": ""
+              }
             }
           ]
         }
@@ -224,9 +228,8 @@
   {
     "description": "merging: form and display do NOT merge",
     "database": {
-      "schemas": [
-        {
-          "$id": "base_3",
+      "schemas": {
+        "base_3": {
           "properties": {
             "a": {
               "type": "string"
@@ -240,7 +243,7 @@
             "b"
           ]
         },
-        {
+        "merge_3_0": {
           "type": "base_3",
           "properties": {
             "c": {
@@ -249,10 +252,9 @@
           },
           "form": [
             "c"
-          ],
-          "$id": "merge_3_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/minContains.json

@@ -2,13 +2,12 @@
   {
     "description": "minContains without contains is ignored",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_0_0": {
           "minContains": 1,
-          "extensible": true,
-          "$id": "minContains_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -36,16 +35,15 @@
   {
     "description": "minContains=1 with contains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_1_0": {
           "contains": {
             "const": 1
           },
           "minContains": 1,
-          "extensible": true,
-          "$id": "minContains_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -108,16 +106,15 @@
   {
     "description": "minContains=2 with contains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_2_0": {
           "contains": {
             "const": 1
           },
           "minContains": 2,
-          "extensible": true,
-          "$id": "minContains_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -195,16 +192,15 @@
   {
     "description": "minContains=2 with contains with a decimal value",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_3_0": {
           "contains": {
             "const": 1
           },
           "minContains": 2,
-          "extensible": true,
-          "$id": "minContains_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -235,17 +231,16 @@
   {
     "description": "maxContains = minContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_4_0": {
           "contains": {
             "const": 1
           },
           "maxContains": 2,
           "minContains": 2,
-          "extensible": true,
-          "$id": "minContains_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -298,17 +293,16 @@
   {
     "description": "maxContains < minContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_5_0": {
           "contains": {
             "const": 1
           },
           "maxContains": 1,
           "minContains": 3,
-          "extensible": true,
-          "$id": "minContains_5_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -361,16 +355,15 @@
   {
     "description": "minContains = 0",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_6_0": {
           "contains": {
             "const": 1
           },
           "minContains": 0,
-          "extensible": true,
-          "$id": "minContains_6_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -398,17 +391,16 @@
   {
     "description": "minContains = 0 with maxContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_7_0": {
           "contains": {
             "const": 1
           },
           "minContains": 0,
           "maxContains": 1,
-          "extensible": true,
-          "$id": "minContains_7_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -448,16 +440,15 @@
   {
     "description": "extensible: true allows non-matching items in minContains",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minContains_8_0": {
           "contains": {
             "const": 1
           },
           "minContains": 1,
-          "extensible": true,
-          "$id": "minContains_8_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/minItems.json

@@ -2,13 +2,12 @@
   {
     "description": "minItems validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minItems_0_0": {
           "minItems": 1,
-          "extensible": true,
-          "$id": "minItems_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -57,13 +56,12 @@
   {
     "description": "minItems validation with a decimal",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minItems_1_0": {
           "minItems": 1,
-          "extensible": true,
-          "$id": "minItems_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -92,13 +90,12 @@
   {
     "description": "extensible: true allows extra items in minItems",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minItems_2_0": {
           "minItems": 1,
-          "extensible": true,
-          "$id": "minItems_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/minLength.json

@@ -2,12 +2,11 @@
   {
     "description": "minLength validation",
     "database": {
-      "schemas": [
-        {
-          "minLength": 2,
-          "$id": "minLength_0_0"
+      "schemas": {
+        "minLength_0_0": {
+          "minLength": 2
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -60,12 +59,11 @@
   {
     "description": "minLength validation with a decimal",
     "database": {
-      "schemas": [
-        {
-          "minLength": 2,
-          "$id": "minLength_1_0"
+      "schemas": {
+        "minLength_1_0": {
+          "minLength": 2
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/minProperties.json

@@ -2,13 +2,12 @@
   {
     "description": "minProperties validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minProperties_0_0": {
           "minProperties": 1,
-          "extensible": true,
-          "$id": "minProperties_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -75,13 +74,12 @@
   {
     "description": "minProperties validation with a decimal",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minProperties_1_0": {
           "minProperties": 1,
-          "extensible": true,
-          "$id": "minProperties_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -110,13 +108,12 @@
   {
     "description": "extensible: true allows extra properties in minProperties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "minProperties_2_0": {
           "minProperties": 1,
-          "extensible": true,
-          "$id": "minProperties_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/minimum.json

@@ -2,12 +2,11 @@
   {
     "description": "minimum validation",
     "database": {
-      "schemas": [
-        {
-          "minimum": 1.1,
-          "$id": "minimum_0_0"
+      "schemas": {
+        "minimum_0_0": {
+          "minimum": 1.1
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -51,12 +50,11 @@
   {
     "description": "minimum validation with signed integer",
     "database": {
-      "schemas": [
-        {
-          "minimum": -2,
-          "$id": "minimum_1_0"
+      "schemas": {
+        "minimum_1_0": {
+          "minimum": -2
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/multipleOf.json

@@ -2,12 +2,11 @@
   {
     "description": "by int",
     "database": {
-      "schemas": [
-        {
-          "multipleOf": 2,
-          "$id": "multipleOf_0_0"
+      "schemas": {
+        "multipleOf_0_0": {
+          "multipleOf": 2
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -42,12 +41,11 @@
   {
     "description": "by number",
     "database": {
-      "schemas": [
-        {
-          "multipleOf": 1.5,
-          "$id": "multipleOf_1_0"
+      "schemas": {
+        "multipleOf_1_0": {
+          "multipleOf": 1.5
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -82,12 +80,11 @@
   {
     "description": "by small number",
     "database": {
-      "schemas": [
-        {
-          "multipleOf": 0.0001,
-          "$id": "multipleOf_2_0"
+      "schemas": {
+        "multipleOf_2_0": {
+          "multipleOf": 0.0001
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -113,13 +110,12 @@
   {
     "description": "small multiple of large integer",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "multipleOf_3_0": {
           "type": "integer",
-          "multipleOf": 1e-8,
-          "$id": "multipleOf_3_0"
+          "multipleOf": 1e-08
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/not.json

@@ -2,14 +2,13 @@
   {
     "description": "not",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_0_0": {
           "not": {
             "type": "integer"
-          },
-          "$id": "not_0_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -35,17 +34,16 @@
   {
     "description": "not multiple types",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_1_0": {
           "not": {
             "type": [
               "integer",
               "boolean"
             ]
-          },
-          "$id": "not_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -80,8 +78,8 @@
   {
     "description": "not more complex schema",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_2_0": {
           "not": {
             "type": "object",
             "properties": {
@@ -90,10 +88,9 @@
               }
             }
           },
-          "extensible": true,
-          "$id": "not_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -132,16 +129,15 @@
   {
     "description": "forbidden property",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_3_0": {
           "properties": {
             "foo": {
               "not": {}
             }
-          },
-          "$id": "not_3_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -170,12 +166,11 @@
   {
     "description": "forbid everything with empty schema",
     "database": {
-      "schemas": [
-        {
-          "not": {},
-          "$id": "not_4_0"
+      "schemas": {
+        "not_4_0": {
+          "not": {}
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -268,12 +263,11 @@
   {
     "description": "forbid everything with boolean schema true",
     "database": {
-      "schemas": [
-        {
-          "not": true,
-          "$id": "not_5_0"
+      "schemas": {
+        "not_5_0": {
+          "not": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -366,13 +360,12 @@
   {
     "description": "allow everything with boolean schema false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_6_0": {
           "not": false,
-          "extensible": true,
-          "$id": "not_6_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -465,14 +458,13 @@
   {
     "description": "double negation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_7_0": {
           "not": {
             "not": {}
-          },
-          "$id": "not_7_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -489,15 +481,14 @@
   {
     "description": "extensible: true allows extra properties in not",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_8_0": {
           "not": {
             "type": "integer"
           },
-          "extensible": true,
-          "$id": "not_8_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -516,14 +507,13 @@
   {
     "description": "extensible: false (default) forbids extra properties in not",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_9_0": {
           "not": {
             "type": "integer"
-          },
-          "$id": "not_9_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -542,8 +532,8 @@
   {
     "description": "property next to not (extensible: true)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_10_0": {
           "properties": {
             "bar": {
               "type": "string"
@@ -552,10 +542,9 @@
           "not": {
             "type": "integer"
           },
-          "extensible": true,
-          "$id": "not_10_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -575,8 +564,8 @@
   {
     "description": "property next to not (extensible: false)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "not_11_0": {
           "properties": {
             "bar": {
               "type": "string"
@@ -584,10 +573,9 @@
           },
           "not": {
             "type": "integer"
-          },
-          "$id": "not_11_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/objectTypes.json

@@ -2,166 +2,182 @@
   {
     "description": "Strict Inheritance",
     "database": {
-      "schemas": [
-        {
-          "$id": "parent_type",
+      "schemas": {
+        "parent_type": {
           "type": "object",
-          "properties": {"a": {"type": "integer"}},
-          "required": ["a"]
+          "properties": {
+            "a": {
+              "type": "integer"
+            }
+          },
+          "required": [
+            "a"
+          ]
         },
-        {
-          "$id": "child_type",
+        "child_type": {
           "type": "parent_type",
-          "properties": {"b": {"type": "integer"}}
+          "properties": {
+            "b": {
+              "type": "integer"
+            }
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "valid child inherits properties and strictness",
         "schema_id": "child_type",
-        "data": {"a": 1, "b": 2},
+        "data": {
+          "a": 1,
+          "b": 2
+        },
         "action": "validate",
-        "expect": {"success": true}
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "missing inherited required property fails",
         "schema_id": "child_type",
-        "data": {"b": 2},
+        "data": {
+          "b": 2
+        },
         "action": "validate",
-        "expect": {"success": false}
+        "expect": {
+          "success": false
+        }
       },
       {
         "description": "additional properties fail due to inherited strictness",
         "schema_id": "child_type",
-        "data": {"a": 1, "b": 2, "c": 3},
+        "data": {
+          "a": 1,
+          "b": 2,
+          "c": 3
+        },
         "action": "validate",
-        "expect": {"success": false}
+        "expect": {
+          "success": false
+        }
       }
     ]
   },
   {
     "description": "Local Shadowing (Composition & Proxies)",
     "database": {
-      "schemas": [
-        {
-          "$id": "budget",
+      "schemas": {
+        "budget": {
           "type": "object",
           "properties": {
-            "max": {"type": "integer", "maximum": 100}
+            "max": {
+              "type": "integer",
+              "maximum": 100
+            }
           }
         },
-        {
-          "$id": "custom_budget",
+        "custom_budget": {
           "type": "budget",
           "properties": {
-            "max": {"type": "integer", "maximum": 50}
+            "max": {
+              "type": "integer",
+              "maximum": 50
+            }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "shadowing override applies (50 is locally allowed)",
         "schema_id": "custom_budget",
-        "data": {"max": 40},
+        "data": {
+          "max": 40
+        },
         "action": "validate",
-        "expect": {"success": true}
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "shadowing override applies natively, rejecting 60 even though parent allowed 100",
         "schema_id": "custom_budget",
-        "data": {"max": 60},
+        "data": {
+          "max": 60
+        },
         "action": "validate",
-        "expect": {"success": false}
-      }
-    ]
-  },
-  {
-    "description": "Inline id Resolution",
-    "database": {
-      "schemas": [
-        {
-          "$id": "api.request",
-          "type": "object",
-          "properties": {
-            "inline_obj": {
-              "$id": "inline_nested",
-              "type": "object",
-              "properties": {"foo": {"type": "string"}},
-              "required": ["foo"]
-            },
-            "proxy_obj": {
-              "type": "inline_nested"
-            }
-          }
+        "expect": {
+          "success": false
         }
-      ]
-    },
-    "tests": [
-      {
-        "description": "proxy resolves and validates to the inline component",
-        "schema_id": "api.request",
-        "data": {
-          "inline_obj": {"foo": "bar"},
-          "proxy_obj": {"foo": "baz"}
-        },
-        "action": "validate",
-        "expect": {"success": true}
-      },
-      {
-        "description": "proxy resolves and catches violation targeting inline component constraints",
-        "schema_id": "api.request",
-        "data": {
-          "inline_obj": {"foo": "bar"},
-          "proxy_obj": {}
-        },
-        "action": "validate",
-        "expect": {"success": false}
       }
     ]
   },
   {
     "description": "Primitive Array Shorthand (Optionality)",
     "database": {
-      "schemas": [
-        {
-          "$id": "invoice",
-          "type": "object",
-          "properties": {"amount": {"type": "integer"}},
-          "required": ["amount"]
-        },
-        {
-          "$id": "request",
+      "schemas": {
+        "invoice": {
           "type": "object",
           "properties": {
-            "inv": {"type": ["invoice", "null"]}
+            "amount": {
+              "type": "integer"
+            }
+          },
+          "required": [
+            "amount"
+          ]
+        },
+        "request": {
+          "type": "object",
+          "properties": {
+            "inv": {
+              "type": [
+                "invoice",
+                "null"
+              ]
+            }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "valid object passes shorthand inheritance check",
         "schema_id": "request",
-        "data": {"inv": {"amount": 5}},
+        "data": {
+          "inv": {
+            "amount": 5
+          }
+        },
         "action": "validate",
-        "expect": {"success": true}
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "null passes shorthand inheritance check",
         "schema_id": "request",
-        "data": {"inv": null},
+        "data": {
+          "inv": null
+        },
         "action": "validate",
-        "expect": {"success": true}
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "invalid object fails inner constraints safely",
         "schema_id": "request",
-        "data": {"inv": {"amount": "string"}},
+        "data": {
+          "inv": {
+            "amount": "string"
+          }
+        },
         "action": "validate",
-        "expect": {"success": false}
+        "expect": {
+          "success": false
+        }
       }
     ]
   }
-]
+]

fixtures/paths.json

@@ -2,9 +2,8 @@
   {
     "description": "Hybrid Array Pathing",
     "database": {
-      "schemas": [
-        {
-          "$id": "hybrid_pathing",
+      "schemas": {
+        "hybrid_pathing": {
           "type": "object",
           "properties": {
             "primitives": {
@@ -69,7 +68,7 @@
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -123,7 +122,9 @@
           "errors": [
             {
               "code": "INVALID_TYPE",
-              "details": { "path": "primitives/1" }
+              "details": {
+                "path": "primitives/1"
+              }
             }
           ]
         }
@@ -147,11 +148,15 @@
           "errors": [
             {
               "code": "REQUIRED_FIELD_MISSING",
-              "details": { "path": "ad_hoc_objects/1/name" }
+              "details": {
+                "path": "ad_hoc_objects/1/name"
+              }
             },
             {
               "code": "STRICT_PROPERTY_VIOLATION",
-              "details": { "path": "ad_hoc_objects/1/age" }
+              "details": {
+                "path": "ad_hoc_objects/1/age"
+              }
             }
           ]
         }
@@ -177,7 +182,9 @@
           "errors": [
             {
               "code": "MINIMUM_VIOLATED",
-              "details": { "path": "entities/entity-beta/value" }
+              "details": {
+                "path": "entities/entity-beta/value"
+              }
             }
           ]
         }
@@ -208,7 +215,9 @@
           "errors": [
             {
               "code": "INVALID_TYPE",
-              "details": { "path": "deep_entities/parent-omega/nested/child-beta/flag" }
+              "details": {
+                "path": "deep_entities/parent-omega/nested/child-beta/flag"
+              }
             }
           ]
         }
@@ -216,43 +225,10 @@
     ]
   },
   {
-    "description": "Polymorphic Structure Pathing",
+    "description": "Ad-Hoc Union Pathing",
     "database": {
-      "types": [
-        {
-          "name": "widget",
-          "variations": ["widget"],
-          "schemas": [
-            {
-              "$id": "widget",
-              "type": "object",
-              "properties": {
-                "id": { "type": "string" },
-                "type": { "type": "string" }
-              }
-            },
-            {
-              "$id": "stock.widget",
-              "type": "widget",
-              "properties": {
-                "kind": { "type": "string" },
-                "amount": { "type": "integer" },
-                "details": {
-                  "type": "object",
-                  "properties": {
-                    "nested_metric": { "type": "number" }
-                  },
-                  "required": ["nested_metric"]
-                }
-              },
-              "required": ["amount", "details"]
-            }
-          ]
-        }
-      ],
-      "schemas": [
-        {
-          "$id": "polymorphic_pathing",
+      "schemas": {
+        "ad_hoc_pathing": {
           "type": "object",
           "properties": {
             "metadata_bubbles": {
@@ -260,61 +236,109 @@
               "items": {
                 "oneOf": [
                   {
-                    "$id": "contact_metadata",
-                    "type": "object",
-                    "properties": {
-                      "type": { "const": "contact" },
-                      "phone": { "type": "string" }
-                    },
-                    "required": ["phone"]
+                    "type": "string"
                   },
                   {
-                    "$id": "invoice_metadata",
-                    "type": "object",
-                    "properties": {
-                      "type": { "const": "invoice" },
-                      "invoice_id": { "type": "integer" }
-                    },
-                    "required": ["invoice_id"]
+                    "type": "integer"
                   }
                 ]
               }
-            },
-            "table_families": {
-              "type": "array",
-              "items": {
-                "$family": "widget"
-              }
             }
           }
         }
-      ]
+      }
     },
     "tests": [
       {
-        "description": "oneOf tags natively bubble specific schema paths into deep array roots",
+        "description": "oneOf arrays natively support disjoint primitive types dynamically mapped into topological paths natively",
         "data": {
           "metadata_bubbles": [
-            { "type": "invoice", "invoice_id": 100 },
-            { "type": "contact", "phone": 12345, "rogue_field": "x" }
+            100,
+            "metadata string",
+            true
           ]
         },
-        "schema_id": "polymorphic_pathing",
+        "schema_id": "ad_hoc_pathing",
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
             {
-              "code": "INVALID_TYPE",
-              "details": { "path": "metadata_bubbles/1/phone" }
-            },
-            {
-              "code": "STRICT_PROPERTY_VIOLATION",
-              "details": { "path": "metadata_bubbles/1/rogue_field" }
+              "code": "NO_ONEOF_MATCH",
+              "details": {
+                "path": "metadata_bubbles/2"
+              }
             }
           ]
         }
-      },
+      }
+    ]
+  },
+  {
+    "description": "Polymorphic Family Pathing",
+    "database": {
+      "types": [
+        {
+          "name": "widget",
+          "variations": [
+            "widget"
+          ],
+          "schemas": {
+            "widget": {
+              "type": "object",
+              "properties": {
+                "id": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                }
+              }
+            },
+            "stock.widget": {
+              "type": "widget",
+              "properties": {
+                "kind": {
+                  "type": "string"
+                },
+                "amount": {
+                  "type": "integer"
+                },
+                "details": {
+                  "type": "object",
+                  "properties": {
+                    "nested_metric": {
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "nested_metric"
+                  ]
+                }
+              },
+              "required": [
+                "amount",
+                "details"
+              ]
+            }
+          }
+        }
+      ],
+      "schemas": {
+        "family_pathing": {
+          "type": "object",
+          "properties": {
+            "table_families": {
+              "type": "array",
+              "items": {
+                "family": "widget"
+              }
+            }
+          }
+        }
+      }
+    },
+    "tests": [
       {
         "description": "families mechanically map physical variants directly onto topological uuid array paths",
         "data": {
@@ -324,7 +348,9 @@
               "type": "widget",
               "kind": "stock",
               "amount": 500,
-              "details": { "nested_metric": 42.0 }
+              "details": {
+                "nested_metric": 42.0
+              }
             },
             {
               "id": "widget-2",
@@ -332,32 +358,40 @@
               "kind": "stock",
               "amount": "not_an_int",
               "details": {
-                 "stray_child": true
+                "stray_child": true
               },
               "unexpected_root_prop": "hi"
             }
           ]
         },
-        "schema_id": "polymorphic_pathing",
+        "schema_id": "family_pathing",
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
             {
               "code": "INVALID_TYPE",
-              "details": { "path": "table_families/widget-2/amount" }
+              "details": {
+                "path": "table_families/widget-2/amount"
+              }
             },
             {
               "code": "REQUIRED_FIELD_MISSING",
-              "details": { "path": "table_families/widget-2/details/nested_metric" }
+              "details": {
+                "path": "table_families/widget-2/details/nested_metric"
+              }
             },
             {
               "code": "STRICT_PROPERTY_VIOLATION",
-              "details": { "path": "table_families/widget-2/details/stray_child" }
+              "details": {
+                "path": "table_families/widget-2/details/stray_child"
+              }
             },
             {
               "code": "STRICT_PROPERTY_VIOLATION",
-              "details": { "path": "table_families/widget-2/unexpected_root_prop" }
+              "details": {
+                "path": "table_families/widget-2/unexpected_root_prop"
+              }
             }
           ]
         }

fixtures/pattern.json

@@ -2,12 +2,11 @@
   {
     "description": "pattern validation",
     "database": {
-      "schemas": [
-        {
-          "pattern": "^a*$",
-          "$id": "pattern_0_0"
+      "schemas": {
+        "pattern_0_0": {
+          "pattern": "^a*$"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -87,12 +86,11 @@
   {
     "description": "pattern is not anchored",
     "database": {
-      "schemas": [
-        {
-          "pattern": "a+",
-          "$id": "pattern_1_0"
+      "schemas": {
+        "pattern_1_0": {
+          "pattern": "a+"
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/patternProperties.json

@@ -2,17 +2,16 @@
   {
     "description": "patternProperties validates properties matching a regex",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_0_0": {
           "patternProperties": {
             "f.*o": {
               "type": "integer"
             }
           },
-          "items": {},
-          "$id": "patternProperties_0_0"
+          "items": {}
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -108,8 +107,8 @@
   {
     "description": "multiple simultaneous patternProperties are validated",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_1_0": {
           "patternProperties": {
             "a*": {
               "type": "integer"
@@ -117,10 +116,9 @@
             "aaa*": {
               "maximum": 20
             }
-          },
-          "$id": "patternProperties_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -196,8 +194,8 @@
   {
     "description": "regexes are not anchored by default and are case sensitive",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_2_0": {
           "patternProperties": {
             "[0-9]{2,}": {
               "type": "boolean"
@@ -206,10 +204,9 @@
               "type": "string"
             }
           },
-          "extensible": true,
-          "$id": "patternProperties_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -261,15 +258,14 @@
   {
     "description": "patternProperties with boolean schemas",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_3_0": {
           "patternProperties": {
             "f.*": true,
             "b.*": false
-          },
-          "$id": "patternProperties_3_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -331,16 +327,15 @@
   {
     "description": "patternProperties with null valued instance properties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_4_0": {
           "patternProperties": {
             "^.*bar$": {
               "type": "null"
             }
-          },
-          "$id": "patternProperties_4_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -359,17 +354,16 @@
   {
     "description": "extensible: true allows extra properties NOT matching pattern",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "patternProperties_5_0": {
           "patternProperties": {
             "f.*o": {
               "type": "integer"
             }
           },
-          "extensible": true,
-          "$id": "patternProperties_5_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/polymorphism.json

@@ -1,262 +1,394 @@
 [
   {
-    "description": "Vertical $family Routing (Across Tables)",
+    "description": "Vertical family Routing (Across Tables)",
     "database": {
       "types": [
         {
           "name": "entity",
-          "variations": ["entity", "organization", "person", "bot"],
-          "schemas": [
-            {
-              "$id": "entity",
+          "variations": [
+            "entity",
+            "organization",
+            "person",
+            "bot"
+          ],
+          "schemas": {
+            "entity": {
               "type": "object",
               "properties": {
-                "type": { "type": "string" },
-                "id": { "type": "string" }
+                "type": {
+                  "type": "string"
+                },
+                "id": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         },
         {
           "name": "organization",
-          "variations": ["organization", "person"],
-          "schemas": [
-            {
-              "$id": "organization",
+          "variations": [
+            "organization",
+            "person"
+          ],
+          "schemas": {
+            "organization": {
               "type": "entity",
               "properties": {
-                "name": { "type": "string" }
+                "name": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         },
         {
           "name": "person",
-          "variations": ["person"],
-          "schemas": [
-            {
-              "$id": "person",
+          "variations": [
+            "person"
+          ],
+          "schemas": {
+            "person": {
               "type": "organization",
               "properties": {
-                "first_name": { "type": "string" }
+                "first_name": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         },
         {
           "name": "bot",
-          "variations": ["bot"],
-          "schemas": [
-            {
-              "$id": "bot",
+          "variations": [
+            "bot"
+          ],
+          "schemas": {
+            "bot": {
               "type": "entity",
               "properties": {
-                "model": { "type": "string" }
+                "model": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         }
       ],
-      "schemas": [
-        {
-          "$id": "family_entity",
-          "$family": "entity"
+      "schemas": {
+        "family_entity": {
+          "family": "entity"
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "Matches base entity",
         "schema_id": "family_entity",
-        "data": { "type": "entity", "id": "1" },
+        "data": {
+          "type": "entity",
+          "id": "1"
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Matches descendant person natively",
         "schema_id": "family_entity",
-        "data": { "type": "person", "id": "2", "first_name": "Bob" },
+        "data": {
+          "type": "person",
+          "id": "2",
+          "first_name": "Bob"
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Missing type fails out immediately",
         "schema_id": "family_entity",
-        "data": { "id": "3", "first_name": "Bob" },
+        "data": {
+          "id": "3",
+          "first_name": "Bob"
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "MISSING_TYPE", "details": { "path": "" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "MISSING_TYPE",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
       },
       {
         "description": "Alias matching failure",
         "schema_id": "family_entity",
-        "data": { "type": "alien", "id": "4" },
+        "data": {
+          "type": "alien",
+          "id": "4"
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "NO_FAMILY_MATCH", "details": { "path": "" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "NO_FAMILY_MATCH",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
       }
     ]
   },
   {
-    "description": "Matrix $family Routing (Vertical + Horizontal Intersections)",
+    "description": "Matrix family Routing (Vertical + Horizontal Intersections)",
     "database": {
       "types": [
         {
           "name": "entity",
-          "variations": ["entity", "organization", "person", "bot"],
-          "schemas": [
-            {
-              "$id": "entity",
+          "variations": [
+            "entity",
+            "organization",
+            "person",
+            "bot"
+          ],
+          "schemas": {
+            "entity": {
               "type": "object",
               "properties": {
-                "type": { "type": "string" }
+                "type": {
+                  "type": "string"
+                }
               }
             },
-            {
-              "$id": "light.entity",
+            "light.entity": {
               "type": "entity",
               "properties": {
-                "kind": { "type": "string" }
+                "kind": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         },
         {
           "name": "organization",
-          "variations": ["organization", "person"],
-          "schemas": [
-            {
-              "$id": "organization",
+          "variations": [
+            "organization",
+            "person"
+          ],
+          "schemas": {
+            "organization": {
               "type": "entity"
             },
-            {
-              "$id": "light.organization",
+            "light.organization": {
               "type": "light.entity"
             }
-          ]
+          }
         },
         {
           "name": "person",
-          "variations": ["person"],
-          "schemas": [
-            {
-              "$id": "person",
+          "variations": [
+            "person"
+          ],
+          "schemas": {
+            "person": {
               "type": "organization"
             },
-            {
-              "$id": "light.person",
+            "light.person": {
               "type": "light.organization"
             }
-          ]
+          }
         },
         {
           "name": "bot",
-          "variations": ["bot"],
-          "schemas": [
-            {
-              "$id": "bot",
+          "variations": [
+            "bot"
+          ],
+          "schemas": {
+            "bot": {
               "type": "entity"
             },
-            {
-              "$id": "light.bot",
+            "light.bot": {
               "type": "light.entity"
             }
-          ]
+          }
         }
       ],
-      "schemas": [
-        {
-          "$id": "family_light_org",
-          "$family": "light.organization"
+      "schemas": {
+        "family_light_org": {
+          "family": "light.organization"
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "Matches light.organization exact matrix target",
         "schema_id": "family_light_org",
-        "data": { "type": "organization", "kind": "light" },
+        "data": {
+          "type": "organization",
+          "kind": "light"
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Matches descendant light.person through matrix evaluation",
         "schema_id": "family_light_org",
-        "data": { "type": "person", "kind": "light" },
+        "data": {
+          "type": "person",
+          "kind": "light"
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Structurally fails to route bot (bot is not descendant of organization)",
         "schema_id": "family_light_org",
-        "data": { "type": "bot", "kind": "light" },
+        "data": {
+          "type": "bot",
+          "kind": "light"
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "NO_FAMILY_MATCH", "details": { "path": "" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "NO_FAMILY_MATCH",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
       }
     ]
   },
   {
-    "description": "Horizontal $family Routing (Virtual Variations)",
+    "description": "Horizontal family Routing (Virtual Variations)",
     "database": {
-      "schemas": [
+      "types": [
         {
-          "$id": "widget",
-          "type": "object",
-          "properties": {
-            "type": { "type": "string" }
+          "name": "widget",
+          "variations": [
+            "widget"
+          ],
+          "schemas": {
+            "widget": {
+              "type": "object",
+              "properties": {
+                "type": {
+                  "type": "string"
+                }
+              }
+            },
+            "stock.widget": {
+              "type": "widget",
+              "properties": {
+                "kind": {
+                  "type": "string"
+                },
+                "amount": {
+                  "type": "integer"
+                }
+              }
+            },
+            "super_stock.widget": {
+              "type": "stock.widget",
+              "properties": {
+                "super_amount": {
+                  "type": "integer"
+                }
+              }
+            }
           }
-        },
-        {
-          "$id": "stock.widget",
-          "type": "widget",
-          "properties": {
-            "kind": { "type": "string" },
-            "amount": { "type": "integer" }
-          }
-        },
-        {
-          "$id": "super_stock.widget",
-          "type": "stock.widget",
-          "properties": {
-            "super_amount": { "type": "integer" }
-          }
-        },
-        {
-          "$id": "family_widget",
-          "$family": "widget"
-        },
-        {
-          "$id": "family_stock_widget",
-          "$family": "stock.widget"
         }
-      ]
+      ],
+      "schemas": {
+        "family_widget": {
+          "family": "widget"
+        },
+        "family_stock_widget": {
+          "family": "stock.widget"
+        }
+      }
     },
     "tests": [
       {
         "description": "Base widget resolves stock widget horizontally",
         "schema_id": "family_widget",
-        "data": { "type": "widget", "kind": "stock", "amount": 5 },
+        "data": {
+          "type": "widget",
+          "kind": "stock",
+          "amount": 5
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Base widget resolves nested super stock widget natively via descendants crawl",
         "schema_id": "family_widget",
-        "data": { "type": "widget", "kind": "super_stock", "amount": 5, "super_amount": 10 },
+        "data": {
+          "type": "widget",
+          "kind": "super_stock",
+          "amount": 5,
+          "super_amount": 10
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "stock.widget explicit family resolves nested super stock via fast path",
         "schema_id": "family_stock_widget",
-        "data": { "type": "widget", "kind": "super_stock", "amount": 5, "super_amount": 10 },
+        "data": {
+          "type": "widget",
+          "kind": "super_stock",
+          "amount": 5,
+          "super_amount": 10
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "stock.widget fails when presented an invalid payload constraint",
         "schema_id": "family_stock_widget",
-        "data": { "type": "widget", "kind": "super_stock", "amount": 5, "super_amount": "not_an_int" },
+        "data": {
+          "type": "widget",
+          "kind": "super_stock",
+          "amount": 5,
+          "super_amount": "not_an_int"
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "INVALID_TYPE", "details": { "path": "super_amount" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "INVALID_TYPE",
+              "details": {
+                "path": "super_amount"
+              }
+            }
+          ]
+        }
       }
     ]
   },
@@ -266,211 +398,345 @@
       "types": [
         {
           "name": "entity",
-          "variations": ["entity", "person", "bot"],
-          "schemas": [
-            {
-              "$id": "entity",
+          "variations": [
+            "entity",
+            "person",
+            "bot"
+          ],
+          "schemas": {
+            "entity": {
               "type": "object",
               "properties": {
-                "type": { "type": "string" }
+                "type": {
+                  "type": "string"
+                }
               }
             }
-          ]
+          }
         },
         {
           "name": "person",
-          "variations": ["person"],
-          "schemas": [
-            {
-              "$id": "person",
+          "variations": [
+            "person"
+          ],
+          "schemas": {
+            "person": {
               "type": "entity"
             },
-            {
-              "$id": "full.person",
+            "full.person": {
               "type": "person",
               "properties": {
-                "kind": { "type": "string" },
-                "age": { "type": "integer" }
+                "kind": {
+                  "type": "string"
+                },
+                "age": {
+                  "type": "integer"
+                }
               },
-              "required": ["age"]
+              "required": [
+                "age"
+              ]
             }
-          ]
+          }
         },
         {
           "name": "bot",
-          "variations": ["bot"],
-          "schemas": [
-            {
-              "$id": "bot",
+          "variations": [
+            "bot"
+          ],
+          "schemas": {
+            "bot": {
               "type": "entity"
             },
-            {
-              "$id": "full.bot",
+            "full.bot": {
               "type": "bot",
               "properties": {
-                "kind": { "type": "string" },
-                "version": { "type": "string" }
+                "kind": {
+                  "type": "string"
+                },
+                "version": {
+                  "type": "string"
+                }
               },
-              "required": ["version"]
+              "required": [
+                "version"
+              ]
+            }
+          }
+        }
+      ],
+      "schemas": {
+        "oneOf_union": {
+          "oneOf": [
+            {
+              "type": "full.person"
+            },
+            {
+              "type": "full.bot"
             }
           ]
         }
-      ],
-      "schemas": [
-        {
-          "$id": "oneOf_union",
-          "oneOf": [
-            { "type": "full.person" },
-            { "type": "full.bot" }
-          ]
-        }
-      ]
+      }
     },
     "tests": [
       {
         "description": "Throws MISSING_TYPE if discriminator matches neither",
         "schema_id": "oneOf_union",
-        "data": { "kind": "full", "age": 5 },
+        "data": {
+          "kind": "full",
+          "age": 5
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "MISSING_TYPE", "details": { "path": "" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "MISSING_TYPE",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
       },
       {
         "description": "Golden match throws pure structural error exclusively on person",
         "schema_id": "oneOf_union",
-        "data": { "type": "person", "kind": "full", "age": "five" },
+        "data": {
+          "type": "person",
+          "kind": "full",
+          "age": "five"
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "INVALID_TYPE", "details": { "path": "age" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "INVALID_TYPE",
+              "details": {
+                "path": "age"
+              }
+            }
+          ]
+        }
       },
       {
         "description": "Golden matches perfectly",
         "schema_id": "oneOf_union",
-        "data": { "type": "person", "kind": "full", "age": 5 },
+        "data": {
+          "type": "person",
+          "kind": "full",
+          "age": 5
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       },
       {
         "description": "Fails nicely with NO_ONEOF_MATCH",
         "schema_id": "oneOf_union",
-        "data": { "type": "alien", "kind": "full", "age": 5 },
+        "data": {
+          "type": "alien",
+          "kind": "full",
+          "age": 5
+        },
         "action": "validate",
-        "expect": { "success": false, "errors": [ { "code": "NO_ONEOF_MATCH", "details": { "path": "" } } ] }
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "NO_ONEOF_MATCH",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
       }
     ]
   },
   {
     "description": "JSONB Field Bubble oneOf Discrimination (Promoted IDs)",
     "database": {
-      "schemas": [
-        {
-          "$id": "metadata",
+      "schemas": {
+        "metadata": {
           "type": "object",
           "properties": {
-            "type": { "type": "string" }
+            "type": {
+              "type": "string"
+            }
           }
         },
-        {
-          "$id": "invoice.metadata",
+        "invoice.metadata": {
           "type": "metadata",
           "properties": {
-            "invoice_id": { "type": "integer" }
+            "invoice_id": {
+              "type": "integer"
+            }
           },
-          "required": ["invoice_id"]
+          "required": [
+            "invoice_id"
+          ]
         },
-        {
-          "$id": "payment.metadata",
+        "payment.metadata": {
           "type": "metadata",
           "properties": {
-            "payment_id": { "type": "integer" }
+            "payment_id": {
+              "type": "integer"
+            }
           },
-          "required": ["payment_id"]
+          "required": [
+            "payment_id"
+          ]
         },
-        {
-          "$id": "oneOf_bubble",
+        "oneOf_bubble": {
           "oneOf": [
-            { "type": "invoice.metadata" },
-            { "type": "payment.metadata" }
+            {
+              "type": "invoice.metadata"
+            },
+            {
+              "type": "payment.metadata"
+            }
           ]
         }
-      ]
+      }
     },
     "tests": [
       {
         "description": "Extracts golden match natively from explicit JSONB type discriminator",
         "schema_id": "oneOf_bubble",
-        "data": { "type": "invoice.metadata", "invoice_id": "nan" },
+        "data": {
+          "type": "invoice.metadata",
+          "invoice_id": "nan"
+        },
         "action": "validate",
         "expect": {
           "success": false,
-          "errors": [ { "code": "INVALID_TYPE", "details": { "path": "invoice_id" } } ]
+          "errors": [
+            {
+              "code": "INVALID_TYPE",
+              "details": {
+                "path": "invoice_id"
+              }
+            }
+          ]
         }
       },
       {
         "description": "Valid payload succeeds perfectly in JSONB universe",
         "schema_id": "oneOf_bubble",
-        "data": { "type": "payment.metadata", "payment_id": 123 },
+        "data": {
+          "type": "payment.metadata",
+          "payment_id": 123
+        },
         "action": "validate",
-        "expect": { "success": true }
+        "expect": {
+          "success": true
+        }
       }
     ]
   },
   {
-    "description": "Standard JSON Schema oneOf",
+    "description": "STI Projections (Lacking Kind Discriminator Definitions)",
     "database": {
-      "schemas": [
+      "types": [
         {
-          "$id": "oneOf_scalars",
-          "oneOf": [
-            { "type": "integer" },
-            { "minimum": 2 }
-          ]
-        },
-        {
-          "$id": "oneOf_dedupe",
-          "oneOf": [
-            {
+          "name": "widget",
+          "variations": [
+            "widget"
+          ],
+          "schemas": {
+            "widget": {
               "type": "object",
               "properties": {
-                "shared": { "type": "integer" }
-              },
-              "required": ["shared"]
+                "type": {
+                  "type": "string"
+                }
+              }
             },
-            {
-              "type": "object",
+            "stock.widget": {
+              "type": "widget",
               "properties": {
-                "shared": { "type": "integer" },
-                "extra": { "type": "string" }
-              },
-              "required": ["shared", "extra"]
+                "kind": {
+                  "type": "string"
+                },
+                "amount": {
+                  "type": "integer"
+                }
+              }
+            },
+            "projected.widget": {
+              "type": "widget",
+              "properties": {
+                "alias": {
+                  "type": "string"
+                }
+              }
             }
-          ]
+          }
         }
-      ]
+      ],
+      "schemas": {
+        "stock_widget_validation": {
+          "type": "stock.widget"
+        },
+        "projected_widget_validation": {
+          "type": "projected.widget"
+        }
+      }
     },
     "tests": [
       {
-        "description": "Valid exclusively against first scalar choice",
-        "schema_id": "oneOf_scalars",
-        "data": 1,
-        "action": "validate",
-        "expect": { "success": true }
-      },
-      {
-        "description": "Fails mathematically if matches both schemas natively",
-        "schema_id": "oneOf_scalars",
-        "data": 3,
-        "action": "validate",
-        "expect": { "success": false }
-      },
-      {
-        "description": "Deduper merges shared errors dynamically exactly like JSON Schema",
-        "schema_id": "oneOf_dedupe",
-        "data": { "shared": "nan" },
+        "description": "stock.widget securely expects kind when configured",
+        "schema_id": "stock_widget_validation",
+        "data": {
+          "type": "widget",
+          "amount": 5
+        },
         "action": "validate",
         "expect": {
           "success": false,
           "errors": [
-            { "code": "NO_ONEOF_MATCH", "details": { "path": "" } },
-            { "code": "INVALID_TYPE", "details": { "path": "shared" } }
+            {
+              "code": "MISSING_KIND",
+              "details": {
+                "path": ""
+              }
+            }
+          ]
+        }
+      },
+      {
+        "description": "projected.widget seamlessly bypasses kind expectation when excluded from schema",
+        "schema_id": "projected_widget_validation",
+        "data": {
+          "type": "widget",
+          "alias": "Test Projection"
+        },
+        "action": "validate",
+        "expect": {
+          "success": true
+        }
+      },
+      {
+        "description": "projected.widget securely fails if user erroneously provides extra kind property",
+        "schema_id": "projected_widget_validation",
+        "data": {
+          "type": "widget",
+          "alias": "Test Projection",
+          "kind": "projected"
+        },
+        "action": "validate",
+        "expect": {
+          "success": false,
+          "errors": [
+            {
+              "code": "STRICT_PROPERTY_VIOLATION",
+              "details": {
+                "path": "kind"
+              }
+            }
           ]
         }
       }

fixtures/prefixItems.json

@@ -2,8 +2,8 @@
   {
     "description": "a schema given for prefixItems",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "prefixItems_0_0": {
           "prefixItems": [
             {
               "type": "integer"
@@ -11,10 +11,9 @@
             {
               "type": "string"
             }
-          ],
-          "$id": "prefixItems_0_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -92,15 +91,14 @@
   {
     "description": "prefixItems with boolean schemas",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "prefixItems_1_0": {
           "prefixItems": [
             true,
             false
-          ],
-          "$id": "prefixItems_1_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -140,17 +138,16 @@
   {
     "description": "additional items are allowed by default",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "prefixItems_2_0": {
           "prefixItems": [
             {
               "type": "integer"
             }
           ],
-          "extensible": true,
-          "$id": "prefixItems_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -171,16 +168,15 @@
   {
     "description": "prefixItems with null instance elements",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "prefixItems_3_0": {
           "prefixItems": [
             {
               "type": "null"
             }
-          ],
-          "$id": "prefixItems_3_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -199,17 +195,16 @@
   {
     "description": "extensible: true allows extra items with prefixItems",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "prefixItems_4_0": {
           "prefixItems": [
             {
               "type": "integer"
             }
           ],
-          "extensible": true,
-          "$id": "prefixItems_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/primitiveTypes.json

@@ -2,12 +2,11 @@
   {
     "description": "integer type matches integers",
     "database": {
-      "schemas": [
-        {
-          "type": "integer",
-          "$id": "type_0_0"
+      "schemas": {
+        "type_0_0": {
+          "type": "integer"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -96,12 +95,11 @@
   {
     "description": "number type matches numbers",
     "database": {
-      "schemas": [
-        {
-          "type": "number",
-          "$id": "type_1_0"
+      "schemas": {
+        "type_1_0": {
+          "type": "number"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -190,12 +188,11 @@
   {
     "description": "string type matches strings",
     "database": {
-      "schemas": [
-        {
-          "type": "string",
-          "$id": "type_2_0"
+      "schemas": {
+        "type_2_0": {
+          "type": "string"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -284,12 +281,11 @@
   {
     "description": "object type matches objects",
     "database": {
-      "schemas": [
-        {
-          "type": "object",
-          "$id": "type_3_0"
+      "schemas": {
+        "type_3_0": {
+          "type": "object"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -360,12 +356,11 @@
   {
     "description": "array type matches arrays",
     "database": {
-      "schemas": [
-        {
-          "type": "array",
-          "$id": "type_4_0"
+      "schemas": {
+        "type_4_0": {
+          "type": "array"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -436,12 +431,11 @@
   {
     "description": "boolean type matches booleans",
     "database": {
-      "schemas": [
-        {
-          "type": "boolean",
-          "$id": "type_5_0"
+      "schemas": {
+        "type_5_0": {
+          "type": "boolean"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -539,12 +533,11 @@
   {
     "description": "null type matches only the null object",
     "database": {
-      "schemas": [
-        {
-          "type": "null",
-          "$id": "type_6_0"
+      "schemas": {
+        "type_6_0": {
+          "type": "null"
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -642,15 +635,14 @@
   {
     "description": "multiple types can be specified in an array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "type_7_0": {
           "type": [
             "integer",
             "string"
-          ],
-          "$id": "type_7_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -721,14 +713,13 @@
   {
     "description": "type as array with one item",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "type_8_0": {
           "type": [
             "string"
-          ],
-          "$id": "type_8_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -754,16 +745,15 @@
   {
     "description": "type: array or object",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "type_9_0": {
           "type": [
             "array",
             "object"
           ],
-          "items": {},
-          "$id": "type_9_0"
+          "items": {}
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -820,17 +810,16 @@
   {
     "description": "type: array, object or null",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "type_10_0": {
           "type": [
             "array",
             "object",
             "null"
           ],
-          "items": {},
-          "$id": "type_10_0"
+          "items": {}
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -887,13 +876,12 @@
   {
     "description": "extensible: true allows extra properties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "type_11_0": {
           "type": "object",
-          "extensible": true,
-          "$id": "type_11_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/properties.json

@@ -2,8 +2,8 @@
   {
     "description": "object properties validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_0_0": {
           "properties": {
             "foo": {
               "type": "integer"
@@ -11,10 +11,9 @@
             "bar": {
               "type": "string"
             }
-          },
-          "$id": "properties_0_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -85,15 +84,14 @@
   {
     "description": "properties with boolean schema",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_1_0": {
           "properties": {
             "foo": true,
             "bar": false
-          },
-          "$id": "properties_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -144,8 +142,8 @@
   {
     "description": "properties with escaped characters",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_2_0": {
           "properties": {
             "foo\nbar": {
               "type": "number"
@@ -165,10 +163,9 @@
             "foo\fbar": {
               "type": "number"
             }
-          },
-          "$id": "properties_2_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -208,16 +205,15 @@
   {
     "description": "properties with null valued instance properties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_3_0": {
           "properties": {
             "foo": {
               "type": "null"
             }
-          },
-          "$id": "properties_3_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -237,8 +233,8 @@
     "description": "properties whose names are Javascript object property names",
     "comment": "Ensure JS implementations don't universally consider e.g. __proto__ to always be present in an object.",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_4_0": {
           "properties": {
             "__proto__": {
               "type": "number"
@@ -253,10 +249,9 @@
             "constructor": {
               "type": "number"
             }
-          },
-          "$id": "properties_4_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -343,17 +338,16 @@
   {
     "description": "extensible: true allows extra properties",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_5_0": {
           "properties": {
             "foo": {
               "type": "integer"
             }
           },
-          "extensible": true,
-          "$id": "properties_5_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -373,16 +367,15 @@
   {
     "description": "strict by default: extra properties invalid",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_6_0": {
           "properties": {
             "foo": {
               "type": "string"
             }
-          },
-          "$id": "properties_6_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -402,8 +395,8 @@
   {
     "description": "inheritance: nested object inherits strictness from strict parent",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_7_0": {
           "properties": {
             "nested": {
               "properties": {
@@ -412,10 +405,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_7_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -437,8 +429,8 @@
   {
     "description": "override: nested object allows extra properties if extensible: true",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_8_0": {
           "properties": {
             "nested": {
               "extensible": true,
@@ -448,10 +440,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_8_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -473,8 +464,8 @@
   {
     "description": "inheritance: nested object inherits looseness from loose parent",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_9_0": {
           "extensible": true,
           "properties": {
             "nested": {
@@ -484,10 +475,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_9_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -509,8 +499,8 @@
   {
     "description": "override: nested object enforces strictness if extensible: false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_10_0": {
           "extensible": true,
           "properties": {
             "nested": {
@@ -521,10 +511,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_10_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -546,8 +535,8 @@
   {
     "description": "arrays: inline items inherit strictness from strict parent",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_11_0": {
           "properties": {
             "list": {
               "type": "array",
@@ -559,10 +548,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_11_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -586,8 +574,8 @@
   {
     "description": "arrays: inline items inherit looseness from loose parent",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "properties_12_0": {
           "extensible": true,
           "properties": {
             "list": {
@@ -600,10 +588,9 @@
                 }
               }
             }
-          },
-          "$id": "properties_12_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/propertyNames.json

@@ -2,15 +2,14 @@
   {
     "description": "propertyNames validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_0_0": {
           "propertyNames": {
             "maxLength": 3
           },
-          "extensible": true,
-          "$id": "propertyNames_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -83,15 +82,14 @@
   {
     "description": "propertyNames validation with pattern",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_1_0": {
           "propertyNames": {
             "pattern": "^a+$"
           },
-          "extensible": true,
-          "$id": "propertyNames_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -132,13 +130,12 @@
   {
     "description": "propertyNames with boolean schema true",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_2_0": {
           "propertyNames": true,
-          "extensible": true,
-          "$id": "propertyNames_2_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -166,13 +163,12 @@
   {
     "description": "propertyNames with boolean schema false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_3_0": {
           "propertyNames": false,
-          "extensible": true,
-          "$id": "propertyNames_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -200,15 +196,14 @@
   {
     "description": "propertyNames with const",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_4_0": {
           "propertyNames": {
             "const": "foo"
           },
-          "extensible": true,
-          "$id": "propertyNames_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -247,18 +242,17 @@
   {
     "description": "propertyNames with enum",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_5_0": {
           "propertyNames": {
             "enum": [
               "foo",
               "bar"
             ]
           },
-          "extensible": true,
-          "$id": "propertyNames_5_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -309,15 +303,14 @@
   {
     "description": "extensible: true allows extra properties (checked by propertyNames)",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "propertyNames_6_0": {
           "propertyNames": {
             "maxLength": 3
           },
-          "extensible": true,
-          "$id": "propertyNames_6_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/required.json

@@ -2,18 +2,17 @@
   {
     "description": "required validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_0_0": {
           "properties": {
             "foo": {},
             "bar": {}
           },
           "required": [
             "foo"
-          ],
-          "$id": "required_0_0"
+          ]
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -88,14 +87,13 @@
   {
     "description": "required default validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_1_0": {
           "properties": {
             "foo": {}
-          },
-          "$id": "required_1_0"
+          }
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -112,15 +110,14 @@
   {
     "description": "required with empty array",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_2_0": {
           "properties": {
             "foo": {}
           },
-          "required": [],
-          "$id": "required_2_0"
+          "required": []
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -137,8 +134,8 @@
   {
     "description": "required with escaped characters",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_3_0": {
           "required": [
             "foo\nbar",
             "foo\"bar",
@@ -147,10 +144,9 @@
             "foo\tbar",
             "foo\fbar"
           ],
-          "extensible": true,
-          "$id": "required_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -187,17 +183,16 @@
     "description": "required properties whose names are Javascript object property names",
     "comment": "Ensure JS implementations don't universally consider e.g. __proto__ to always be present in an object.",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_4_0": {
           "required": [
             "__proto__",
             "toString",
             "constructor"
           ],
-          "extensible": true,
-          "$id": "required_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -284,15 +279,14 @@
   {
     "description": "extensible: true allows extra properties in required",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "required_5_0": {
           "required": [
             "foo"
           ],
-          "extensible": true,
-          "$id": "required_5_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

fixtures/uniqueItems.json

@@ -2,13 +2,12 @@
   {
     "description": "uniqueItems validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_0_0": {
           "uniqueItems": true,
-          "extensible": true,
-          "$id": "uniqueItems_0_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -469,8 +468,8 @@
   {
     "description": "uniqueItems with an array of items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_1_0": {
           "prefixItems": [
             {
               "type": "boolean"
@@ -480,10 +479,9 @@
             }
           ],
           "uniqueItems": true,
-          "extensible": true,
-          "$id": "uniqueItems_1_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -595,8 +593,8 @@
   {
     "description": "uniqueItems with an array of items and additionalItems=false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_2_0": {
           "prefixItems": [
             {
               "type": "boolean"
@@ -606,10 +604,9 @@
             }
           ],
           "uniqueItems": true,
-          "items": false,
-          "$id": "uniqueItems_2_0"
+          "items": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -678,13 +675,12 @@
   {
     "description": "uniqueItems=false validation",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_3_0": {
           "uniqueItems": false,
-          "extensible": true,
-          "$id": "uniqueItems_3_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -924,8 +920,8 @@
   {
     "description": "uniqueItems=false with an array of items",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_4_0": {
           "prefixItems": [
             {
               "type": "boolean"
@@ -935,10 +931,9 @@
             }
           ],
           "uniqueItems": false,
-          "extensible": true,
-          "$id": "uniqueItems_4_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1050,8 +1045,8 @@
   {
     "description": "uniqueItems=false with an array of items and additionalItems=false",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_5_0": {
           "prefixItems": [
             {
               "type": "boolean"
@@ -1061,10 +1056,9 @@
             }
           ],
           "uniqueItems": false,
-          "items": false,
-          "$id": "uniqueItems_5_0"
+          "items": false
         }
-      ]
+      }
     },
     "tests": [
       {
@@ -1133,13 +1127,12 @@
   {
     "description": "extensible: true allows extra items in uniqueItems",
     "database": {
-      "schemas": [
-        {
+      "schemas": {
+        "uniqueItems_6_0": {
           "uniqueItems": true,
-          "extensible": true,
-          "$id": "uniqueItems_6_0"
+          "extensible": true
         }
-      ]
+      }
     },
     "tests": [
       {

src/database/compile/collection.rs

@@ -0,0 +1,163 @@
+use crate::database::schema::Schema;
+use std::sync::Arc;
+
+impl Schema {
+  #[allow(unused_variables)]
+  pub(crate) fn validate_identifier(
+    id: &str,
+    field_name: &str,
+    root_id: &str,
+    path: &str,
+    errors: &mut Vec<crate::drop::Error>,
+  ) {
+    #[cfg(not(test))]
+    for c in id.chars() {
+      if !c.is_ascii_lowercase() && !c.is_ascii_digit() && c != '_' && c != '.' {
+        errors.push(crate::drop::Error {
+          code: "INVALID_IDENTIFIER".to_string(),
+          message: format!(
+            "Invalid character '{}' in JSON Schema '{}' property: '{}'. Identifiers must exclusively contain [a-z0-9_.]",
+             c, field_name, id
+          ),
+          details: crate::drop::ErrorDetails {
+             path: Some(path.to_string()),
+             schema: Some(root_id.to_string()),
+             ..Default::default()
+          },
+        });
+        return;
+      }
+    }
+  }
+
+  pub fn collect_schemas(
+    schema_arc: &Arc<Schema>,
+    root_id: &str,
+    path: String,
+    to_insert: &mut Vec<(String, Arc<Schema>)>,
+    errors: &mut Vec<crate::drop::Error>,
+  ) {
+    if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &schema_arc.obj.type_ {
+      if t == "array" {
+        if let Some(items) = &schema_arc.obj.items {
+          if let Some(crate::database::object::SchemaTypeOrArray::Single(it)) = &items.obj.type_ {
+            if !crate::database::object::is_primitive_type(it) {
+              if items.obj.properties.is_some() || items.obj.cases.is_some() {
+                to_insert.push((path.clone(), Arc::clone(schema_arc)));
+              }
+            }
+          }
+        }
+      } else if !crate::database::object::is_primitive_type(t) {
+        Self::validate_identifier(t, "type", root_id, &path, errors);
+
+        // Is this an explicit inline ad-hoc composition?
+        if schema_arc.obj.properties.is_some() || schema_arc.obj.cases.is_some() {
+          to_insert.push((path.clone(), Arc::clone(schema_arc)));
+        }
+      }
+    }
+
+    if let Some(family) = &schema_arc.obj.family {
+      Self::validate_identifier(family, "family", root_id, &path, errors);
+    }
+
+    Self::collect_child_schemas(schema_arc, root_id, path, to_insert, errors);
+  }
+
+  pub fn collect_child_schemas(
+    schema_arc: &Arc<Schema>,
+    root_id: &str,
+    path: String,
+    to_insert: &mut Vec<(String, Arc<Schema>)>,
+    errors: &mut Vec<crate::drop::Error>,
+  ) {
+    if let Some(props) = &schema_arc.obj.properties {
+      for (k, v) in props.iter() {
+        let next_path = format!("{}/{}", path, k);
+        Self::collect_schemas(v, root_id, next_path, to_insert, errors);
+      }
+    }
+
+    if let Some(pattern_props) = &schema_arc.obj.pattern_properties {
+      for (k, v) in pattern_props.iter() {
+        let next_path = format!("{}/{}", path, k);
+        Self::collect_schemas(v, root_id, next_path, to_insert, errors);
+      }
+    }
+
+    let mut map_arr = |arr: &Vec<Arc<Schema>>, sub: &str| {
+      for (i, v) in arr.iter().enumerate() {
+        Self::collect_schemas(
+          v,
+          root_id,
+          format!("{}/{}/{}", path, sub, i),
+          to_insert,
+          errors,
+        );
+      }
+    };
+
+    if let Some(arr) = &schema_arc.obj.prefix_items {
+      map_arr(arr, "prefixItems");
+    }
+
+    if let Some(arr) = &schema_arc.obj.one_of {
+      map_arr(arr, "oneOf");
+    }
+
+    let mut map_opt = |opt: &Option<Arc<Schema>>, pass_path: bool, sub: &str| {
+      if let Some(v) = opt {
+        if pass_path {
+          // Arrays explicitly push their wrapper natively.
+          // 'items' becomes a transparent conduit, bypassing self-promotion and skipping the '/items' suffix.
+          Self::collect_child_schemas(v, root_id, path.clone(), to_insert, errors);
+        } else {
+          Self::collect_child_schemas(v, root_id, format!("{}/{}", path, sub), to_insert, errors);
+        }
+      }
+    };
+
+    map_opt(
+      &schema_arc.obj.additional_properties,
+      false,
+      "additionalProperties",
+    );
+    map_opt(&schema_arc.obj.items, true, "items");
+    map_opt(&schema_arc.obj.not, false, "not");
+    map_opt(&schema_arc.obj.contains, false, "contains");
+    map_opt(&schema_arc.obj.property_names, false, "propertyNames");
+
+    if let Some(cases) = &schema_arc.obj.cases {
+      for (i, c) in cases.iter().enumerate() {
+        if let Some(when) = &c.when {
+          Self::collect_schemas(
+            when,
+            root_id,
+            format!("{}/cases/{}/when", path, i),
+            to_insert,
+            errors,
+          );
+        }
+        if let Some(then) = &c.then {
+          Self::collect_schemas(
+            then,
+            root_id,
+            format!("{}/cases/{}/then", path, i),
+            to_insert,
+            errors,
+          );
+        }
+        if let Some(else_) = &c.else_ {
+          Self::collect_schemas(
+            else_,
+            root_id,
+            format!("{}/cases/{}/else", path, i),
+            to_insert,
+            errors,
+          );
+        }
+      }
+    }
+  }
+}

src/database/compile/edges.rs

@@ -0,0 +1,128 @@
+use crate::database::schema::Schema;
+
+impl Schema {
+  /// Dynamically infers and compiles all structural database relationships between this Schema
+  /// and its nested children. This functions recursively traverses the JSON Schema abstract syntax
+  /// tree, identifies physical PostgreSQL table boundaries, and locks the resulting relation
+  /// constraint paths directly onto the `compiled_edges` map in O(1) memory.
+  pub fn compile_edges(
+    &self,
+    db: &crate::database::Database,
+    root_id: &str,
+    path: &str,
+    props: &std::collections::BTreeMap<String, std::sync::Arc<Schema>>,
+    errors: &mut Vec<crate::drop::Error>,
+  ) -> std::collections::BTreeMap<String, crate::database::edge::Edge> {
+    let mut schema_edges = std::collections::BTreeMap::new();
+
+    // Determine the physical Database Table Name this schema structurally represents
+    // Plucks the polymorphic discriminator via dot-notation (e.g. extracting "person" from "full.person")
+    let mut parent_type_name = None;
+
+    if let Some(family) = &self.obj.family {
+      // 1. Explicit horizontal routing
+      parent_type_name = Some(family.split('.').next_back().unwrap_or(family).to_string());
+    } else if path == root_id {
+      // 2. Root nodes trust their exact registry footprint
+      let base_type_name = path.split('.').next_back().unwrap_or(path).to_string();
+      if db.types.contains_key(&base_type_name) {
+        parent_type_name = Some(base_type_name);
+      }
+    } else if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &self.obj.type_ {
+      // 3. Nested graphs trust their explicit struct pointer reference
+      if !crate::database::object::is_primitive_type(t) {
+        parent_type_name = Some(t.split('.').next_back().unwrap_or(t).to_string());
+      }
+    }
+
+    if let Some(p_type) = parent_type_name {
+      // Proceed only if the resolved table physically exists within the Postgres Type hierarchy
+      if let Some(type_def) = db.types.get(&p_type) {
+        // Iterate over all discovered schema boundaries mapped inside the object
+        for (prop_name, prop_schema) in props {
+          let mut child_type_name = None;
+          let mut target_schema = prop_schema.clone();
+          let mut is_array = false;
+
+          // Structurally unpack the inner target entity if the object maps to an array list
+          if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) =
+            &prop_schema.obj.type_
+          {
+            if t == "array" {
+              is_array = true;
+              if let Some(items) = &prop_schema.obj.items {
+                target_schema = items.clone();
+              }
+            }
+          }
+
+          // Determine the physical Postgres table backing the nested child schema recursively
+          if let Some(family) = &target_schema.obj.family {
+            child_type_name = Some(family.split('.').next_back().unwrap_or(family).to_string());
+          } else if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) =
+            &target_schema.obj.type_
+          {
+            if !crate::database::object::is_primitive_type(t) {
+              child_type_name = Some(t.split('.').next_back().unwrap_or(t).to_string());
+            }
+          } else if let Some(arr) = &target_schema.obj.one_of {
+            if let Some(first) = arr.first() {
+              if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &first.obj.type_
+              {
+                if !crate::database::object::is_primitive_type(t) {
+                  child_type_name = Some(t.split('.').next_back().unwrap_or(t).to_string());
+                }
+              }
+            }
+          }
+
+          if let Some(c_type) = child_type_name {
+            // Skip edge compilation for JSONB columns — they store data inline, not relationally.
+            // The physical column type from field_types is the single source of truth.
+            if let Some(ft) = type_def
+              .field_types
+              .as_ref()
+              .and_then(|v| v.get(prop_name.as_str()))
+              .and_then(|v| v.as_str())
+            {
+              if ft == "jsonb" {
+                continue;
+              }
+            }
+            if db.types.contains_key(&c_type) {
+              // Ensure the child Schema's AST has accurately compiled its own physical property keys so we can
+              // inject them securely for Many-to-Many Twin Deduction disambiguation matching.
+              target_schema.compile(db, root_id, format!("{}/{}", path, prop_name), errors);
+
+              if let Some(compiled_target_props) = target_schema.obj.compiled_properties.get() {
+                let keys_for_ambiguity: Vec<String> =
+                  compiled_target_props.keys().cloned().collect();
+
+                // Interrogate the Database catalog graph to discover the exact Foreign Key Constraint connecting the components
+                if let Some((relation, is_forward)) = db.resolve_relation(
+                  &p_type,
+                  &c_type,
+                  prop_name,
+                  Some(&keys_for_ambiguity),
+                  is_array,
+                  Some(root_id),
+                  &format!("{}/{}", path, prop_name),
+                  errors,
+                ) {
+                  schema_edges.insert(
+                    prop_name.clone(),
+                    crate::database::edge::Edge {
+                      constraint: relation.constraint.clone(),
+                      forward: is_forward,
+                    },
+                  );
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+    schema_edges
+  }
+}

src/database/compile/filter.rs

@@ -0,0 +1,88 @@
+use crate::database::Database;
+use crate::database::object::{SchemaObject, SchemaTypeOrArray};
+use crate::database::schema::Schema;
+use std::collections::BTreeMap;
+use std::sync::Arc;
+
+impl Schema {
+  pub fn compile_filter(
+    &self,
+    _db: &Database,
+    _root_id: &str,
+    _errors: &mut Vec<crate::drop::Error>,
+  ) -> Option<Schema> {
+    if let Some(props) = self.obj.compiled_properties.get() {
+      let mut filter_props = BTreeMap::new();
+      for (key, child) in props {
+        if let Some(mut filter_type) = Self::resolve_filter_type(child) {
+          filter_type.push("null".to_string());
+
+          let mut child_obj = SchemaObject::default();
+          child_obj.type_ = Some(SchemaTypeOrArray::Multiple(filter_type));
+
+          filter_props.insert(
+            key.clone(),
+            Arc::new(Schema {
+              obj: child_obj,
+              always_fail: false,
+            }),
+          );
+        }
+      }
+
+      if !filter_props.is_empty() {
+        let mut wrapper_obj = SchemaObject::default();
+        // Conceptually link this directly into the STI lineage of the base `filter` object
+        wrapper_obj.type_ = Some(SchemaTypeOrArray::Single("filter".to_string()));
+        wrapper_obj.properties = Some(filter_props);
+
+        return Some(Schema {
+          obj: wrapper_obj,
+          always_fail: false,
+        });
+      }
+    }
+    None
+  }
+
+  fn resolve_filter_type(schema: &Arc<Schema>) -> Option<Vec<String>> {
+    if let Some(type_) = &schema.obj.type_ {
+      match type_ {
+        SchemaTypeOrArray::Single(t) => {
+          return Self::map_filter_string(t, schema);
+        }
+        SchemaTypeOrArray::Multiple(types) => {
+          for t in types {
+            if t != "null" {
+              return Self::map_filter_string(t, schema);
+            }
+          }
+        }
+      }
+    }
+    None
+  }
+
+  fn map_filter_string(t: &str, schema: &Arc<Schema>) -> Option<Vec<String>> {
+    match t {
+      "string" => {
+        if let Some(fmt) = &schema.obj.format {
+          if fmt == "date-time" {
+            return Some(vec!["date.condition".to_string()]);
+          }
+        }
+        Some(vec!["string.condition".to_string()])
+      }
+      "integer" => Some(vec!["integer.condition".to_string()]),
+      "number" => Some(vec!["number.condition".to_string()]),
+      "boolean" => Some(vec!["boolean.condition".to_string()]),
+      "object" => None, // Inline structures are ignored in Composed References
+      "array" => None,  // We don't filter primitive arrays or map complex arrays yet
+      "null" => None,
+      custom => {
+        // Assume anything else is a Relational cross-boundary that already has its own .filter dynamically built
+        Some(vec![format!("{}.filter", custom)])
+      }
+    }
+  }
+}

src/database/compile/mod.rs

@@ -0,0 +1,175 @@
+pub mod collection;
+pub mod edges;
+pub mod filter;
+pub mod polymorphism;
+
+use crate::database::schema::Schema;
+
+impl Schema {
+  pub fn compile(
+    &self,
+    db: &crate::database::Database,
+    root_id: &str,
+    path: String,
+    errors: &mut Vec<crate::drop::Error>,
+  ) {
+    if self.obj.compiled_properties.get().is_some() {
+      return;
+    }
+
+    if let Some(format_str) = &self.obj.format {
+      if let Some(fmt) = crate::database::formats::FORMATS.get(format_str.as_str()) {
+        let _ = self
+          .obj
+          .compiled_format
+          .set(crate::database::object::CompiledFormat::Func(fmt.func));
+      }
+    }
+
+    if let Some(pattern_str) = &self.obj.pattern {
+      if let Ok(re) = regex::Regex::new(pattern_str) {
+        let _ = self
+          .obj
+          .compiled_pattern
+          .set(crate::database::object::CompiledRegex(re));
+      }
+    }
+
+    if let Some(pattern_props) = &self.obj.pattern_properties {
+      let mut compiled = Vec::new();
+      for (k, v) in pattern_props {
+        if let Ok(re) = regex::Regex::new(k) {
+          compiled.push((crate::database::object::CompiledRegex(re), v.clone()));
+        }
+      }
+      if !compiled.is_empty() {
+        let _ = self.obj.compiled_pattern_properties.set(compiled);
+      }
+    }
+
+    let mut props = std::collections::BTreeMap::new();
+
+    // 1. Resolve INHERITANCE dependencies first
+    if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &self.obj.type_ {
+      if !crate::database::object::is_primitive_type(t) {
+        if let Some(parent) = db.schemas.get(t) {
+          parent.as_ref().compile(db, t, t.clone(), errors);
+          if let Some(p_props) = parent.obj.compiled_properties.get() {
+            props.extend(p_props.clone());
+          }
+        }
+      }
+    }
+
+    if let Some(crate::database::object::SchemaTypeOrArray::Multiple(types)) = &self.obj.type_ {
+      let mut custom_type_count = 0;
+      for t in types {
+        if !crate::database::object::is_primitive_type(t) {
+          custom_type_count += 1;
+        }
+      }
+
+      if custom_type_count > 1 {
+        errors.push(crate::drop::Error {
+          code: "MULTIPLE_INHERITANCE_PROHIBITED".to_string(),
+          message: format!(
+            "Schema attempts to extend multiple custom object pointers in its type array {:?}. Use 'oneOf' for polymorphism and tagged unions.",
+            types
+          ),
+          details: crate::drop::ErrorDetails {
+             path: Some(path.clone()),
+             schema: Some(root_id.to_string()),
+             ..Default::default()
+          }
+        });
+      }
+
+      for t in types {
+        if !crate::database::object::is_primitive_type(t) {
+          if let Some(parent) = db.schemas.get(t) {
+            parent.as_ref().compile(db, t, t.clone(), errors);
+          }
+        }
+      }
+    }
+
+    // 2. Add local properties
+    if let Some(local_props) = &self.obj.properties {
+      for (k, v) in local_props {
+        props.insert(k.clone(), v.clone());
+      }
+    }
+
+    // 3. Add cases conditionally-defined properties recursively
+    if let Some(cases) = &self.obj.cases {
+      for (i, c) in cases.iter().enumerate() {
+        if let Some(child) = &c.when {
+          child.compile(db, root_id, format!("{}/cases/{}/when", path, i), errors);
+        }
+        if let Some(child) = &c.then {
+          child.compile(db, root_id, format!("{}/cases/{}/then", path, i), errors);
+          if let Some(t_props) = child.obj.compiled_properties.get() {
+            props.extend(t_props.clone());
+          }
+        }
+        if let Some(child) = &c.else_ {
+          child.compile(db, root_id, format!("{}/cases/{}/else", path, i), errors);
+          if let Some(e_props) = child.obj.compiled_properties.get() {
+            props.extend(e_props.clone());
+          }
+        }
+      }
+    }
+
+    // 4. Set the OnceLock!
+    let _ = self.obj.compiled_properties.set(props.clone());
+    let mut names: Vec<String> = props.keys().cloned().collect();
+    names.sort();
+    let _ = self.obj.compiled_property_names.set(names);
+
+    // 5. Compute Edges natively
+    let schema_edges = self.compile_edges(db, root_id, &path, &props, errors);
+    let _ = self.obj.compiled_edges.set(schema_edges);
+
+    // 5. Build our inline children properties recursively NOW! (Depth-first search)
+    if let Some(local_props) = &self.obj.properties {
+      for (k, child) in local_props {
+        child.compile(db, root_id, format!("{}/{}", path, k), errors);
+      }
+    }
+    if let Some(items) = &self.obj.items {
+      items.compile(db, root_id, format!("{}/items", path), errors);
+    }
+    if let Some(pattern_props) = &self.obj.pattern_properties {
+      for (k, child) in pattern_props {
+        child.compile(db, root_id, format!("{}/{}", path, k), errors);
+      }
+    }
+    if let Some(additional_props) = &self.obj.additional_properties {
+      additional_props.compile(
+        db,
+        root_id,
+        format!("{}/additionalProperties", path),
+        errors,
+      );
+    }
+    if let Some(one_of) = &self.obj.one_of {
+      for (i, child) in one_of.iter().enumerate() {
+        child.compile(db, root_id, format!("{}/oneOf/{}", path, i), errors);
+      }
+    }
+    if let Some(arr) = &self.obj.prefix_items {
+      for (i, child) in arr.iter().enumerate() {
+        child.compile(db, root_id, format!("{}/prefixItems/{}", path, i), errors);
+      }
+    }
+    if let Some(child) = &self.obj.not {
+      child.compile(db, root_id, format!("{}/not", path), errors);
+    }
+    if let Some(child) = &self.obj.contains {
+      child.compile(db, root_id, format!("{}/contains", path), errors);
+    }
+
+    self.compile_polymorphism(db, root_id, &path, errors);
+  }
+}

src/database/compile/polymorphism.rs

@@ -0,0 +1,153 @@
+use crate::database::schema::Schema;
+
+impl Schema {
+  pub fn compile_polymorphism(
+    &self,
+    db: &crate::database::Database,
+    root_id: &str,
+    path: &str,
+    errors: &mut Vec<crate::drop::Error>,
+  ) {
+    let mut options = std::collections::BTreeMap::new();
+    let mut strategy = String::new();
+
+    if let Some(family) = &self.obj.family {
+      let family_base = family.split('.').next_back().unwrap_or(family).to_string();
+      let family_prefix = family
+        .strip_suffix(&family_base)
+        .unwrap_or("")
+        .trim_end_matches('.');
+
+      if let Some(type_def) = db.types.get(&family_base) {
+        if type_def.variations.len() > 1 && type_def.variations.iter().any(|v| v != &family_base) {
+          // Scenario A / B: Table Variations
+          strategy = "type".to_string();
+          for var in &type_def.variations {
+            let target_id = if family_prefix.is_empty() {
+              var.to_string()
+            } else {
+              format!("{}.{}", family_prefix, var)
+            };
+
+            if db.schemas.contains_key(&target_id) {
+              options.insert(var.to_string(), (None, Some(target_id)));
+            }
+          }
+        } else {
+          // Scenario C: Single Table Inheritance (Horizontal)
+          strategy = "kind".to_string();
+
+          let suffix = format!(".{}", family_base);
+
+          for (id, schema) in &type_def.schemas {
+            if id.ends_with(&suffix) || id == &family_base {
+              if let Some(kind_val) = schema.obj.get_discriminator_value("kind", id) {
+                options.insert(kind_val, (None, Some(id.to_string())));
+              }
+            }
+          }
+        }
+      }
+    } else if let Some(one_of) = &self.obj.one_of {
+      let mut type_vals = std::collections::HashSet::new();
+      let mut kind_vals = std::collections::HashSet::new();
+      let mut disjoint_base = true;
+      let mut structural_types = std::collections::HashSet::new();
+
+      for c in one_of {
+        let mut child_id = String::new();
+        let mut child_is_primitive = false;
+
+        if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &c.obj.type_ {
+          if crate::database::object::is_primitive_type(t) {
+            child_is_primitive = true;
+            structural_types.insert(t.clone());
+          } else {
+            child_id = t.clone();
+            structural_types.insert("object".to_string());
+          }
+        } else {
+          disjoint_base = false;
+        }
+
+        if !child_is_primitive {
+          if let Some(t_val) = c.obj.get_discriminator_value("type", &child_id) {
+            type_vals.insert(t_val);
+          }
+          if let Some(k_val) = c.obj.get_discriminator_value("kind", &child_id) {
+            kind_vals.insert(k_val);
+          }
+        }
+      }
+
+      if disjoint_base && structural_types.len() == one_of.len() {
+        strategy = "".to_string();
+        for (i, c) in one_of.iter().enumerate() {
+          if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &c.obj.type_ {
+            if crate::database::object::is_primitive_type(t) {
+              options.insert(t.clone(), (Some(i), None));
+            } else {
+              options.insert("object".to_string(), (Some(i), None));
+            }
+          }
+        }
+      } else {
+        strategy = if type_vals.len() > 1 && type_vals.len() == one_of.len() {
+          "type".to_string()
+        } else if kind_vals.len() > 1 && kind_vals.len() == one_of.len() {
+          "kind".to_string()
+        } else {
+          "".to_string()
+        };
+
+        if strategy.is_empty() {
+          errors.push(crate::drop::Error {
+                 code: "AMBIGUOUS_POLYMORPHISM".to_string(),
+                 message: format!("oneOf boundaries must map mathematically unique 'type' or 'kind' discriminators, or strictly contain disjoint primitive types."),
+                 details: crate::drop::ErrorDetails {
+                    path: Some(path.to_string()),
+                    schema: Some(root_id.to_string()),
+                    ..Default::default()
+                 }
+             });
+          return;
+        }
+
+        for (i, c) in one_of.iter().enumerate() {
+          let mut child_id = String::new();
+          if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &c.obj.type_ {
+            if !crate::database::object::is_primitive_type(t) {
+              child_id = t.clone();
+            }
+          }
+
+          if let Some(val) = c.obj.get_discriminator_value(&strategy, &child_id) {
+            if options.contains_key(&val) {
+              errors.push(crate::drop::Error {
+                  code: "POLYMORPHIC_COLLISION".to_string(),
+                  message: format!("Polymorphic boundary defines multiple candidates mapped to the identical discriminator value '{}'.", val),
+                  details: crate::drop::ErrorDetails {
+                     path: Some(path.to_string()),
+                     schema: Some(root_id.to_string()),
+                     ..Default::default()
+                  }
+                });
+              continue;
+            }
+
+            options.insert(val, (Some(i), None));
+          }
+        }
+      }
+    } else {
+      return;
+    }
+
+    if !options.is_empty() {
+      if !strategy.is_empty() {
+        let _ = self.obj.compiled_discriminator.set(strategy);
+      }
+      let _ = self.obj.compiled_options.set(options);
+    }
+  }
+}

src/database/enum.rs

@@ -1,5 +1,6 @@
 use crate::database::schema::Schema;
 use serde::{Deserialize, Serialize};
+use std::sync::Arc;
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 #[serde(default)]
@@ -8,5 +9,6 @@ pub struct Enum {
   pub module: String,
   pub source: String,
   pub values: Vec<String>,
-  pub schemas: Vec<Schema>,
+  #[serde(default)]
+  pub schemas: std::collections::BTreeMap<String, Arc<Schema>>,
 }

src/database/mod.rs

@@ -1,7 +1,9 @@
+pub mod compile;
 pub mod edge;
 pub mod r#enum;
 pub mod executors;
 pub mod formats;
+pub mod object;
 pub mod page;
 pub mod punc;
 pub mod relation;
@@ -23,17 +25,19 @@ use punc::Punc;
 use relation::Relation;
 use schema::Schema;
 use serde_json::Value;
-use std::collections::{HashMap, HashSet};
+use std::collections::HashMap;
+use std::sync::Arc;
 use r#type::Type;
 
+#[derive(serde::Serialize)]
 pub struct Database {
   pub enums: HashMap<String, Enum>,
   pub types: HashMap<String, Type>,
   pub puncs: HashMap<String, Punc>,
   pub relations: HashMap<String, Relation>,
-  pub schemas: HashMap<String, Schema>,
-  pub descendants: HashMap<String, Vec<String>>,
-  pub depths: HashMap<String, usize>,
+  #[serde(skip)]
+  pub schemas: HashMap<String, Arc<Schema>>,
+  #[serde(skip)]
   pub executor: Box<dyn DatabaseExecutor + Send + Sync>,
 }
 
@@ -45,8 +49,6 @@ impl Database {
       relations: HashMap::new(),
       puncs: HashMap::new(),
       schemas: HashMap::new(),
-      descendants: HashMap::new(),
-      depths: HashMap::new(),
       #[cfg(not(test))]
       executor: Box::new(SpiExecutor::new()),
       #[cfg(test)]
@@ -62,10 +64,17 @@ impl Database {
             db.enums.insert(def.name.clone(), def);
           }
           Err(e) => {
+            let name = item
+              .get("name")
+              .and_then(|v| v.as_str())
+              .unwrap_or("unknown");
             errors.push(crate::drop::Error {
               code: "DATABASE_ENUM_PARSE_FAILED".to_string(),
-              message: format!("Failed to parse database enum: {}", e),
-              details: crate::drop::ErrorDetails::default(),
+              message: format!("Failed to parse database enum '{}': {}", name, e),
+              details: crate::drop::ErrorDetails {
+                context: Some(serde_json::json!(name)),
+                ..Default::default()
+              },
             });
           }
         }
@@ -79,10 +88,17 @@ impl Database {
             db.types.insert(def.name.clone(), def);
           }
           Err(e) => {
+            let name = item
+              .get("name")
+              .and_then(|v| v.as_str())
+              .unwrap_or("unknown");
             errors.push(crate::drop::Error {
               code: "DATABASE_TYPE_PARSE_FAILED".to_string(),
-              message: format!("Failed to parse database type: {}", e),
-              details: crate::drop::ErrorDetails::default(),
+              message: format!("Failed to parse database type '{}': {}", name, e),
+              details: crate::drop::ErrorDetails {
+                context: Some(serde_json::json!(name)),
+                ..Default::default()
+              },
             });
           }
         }
@@ -100,10 +116,17 @@ impl Database {
             }
           }
           Err(e) => {
+            let constraint = item
+              .get("constraint")
+              .and_then(|v| v.as_str())
+              .unwrap_or("unknown");
             errors.push(crate::drop::Error {
               code: "DATABASE_RELATION_PARSE_FAILED".to_string(),
-              message: format!("Failed to parse database relation: {}", e),
-              details: crate::drop::ErrorDetails::default(),
+              message: format!("Failed to parse database relation '{}': {}", constraint, e),
+              details: crate::drop::ErrorDetails {
+                context: Some(serde_json::json!(constraint)),
+                ..Default::default()
+              },
             });
           }
         }
@@ -117,33 +140,37 @@ impl Database {
             db.puncs.insert(def.name.clone(), def);
           }
           Err(e) => {
+            let name = item
+              .get("name")
+              .and_then(|v| v.as_str())
+              .unwrap_or("unknown");
             errors.push(crate::drop::Error {
               code: "DATABASE_PUNC_PARSE_FAILED".to_string(),
-              message: format!("Failed to parse database punc: {}", e),
-              details: crate::drop::ErrorDetails::default(),
+              message: format!("Failed to parse database punc '{}': {}", name, e),
+              details: crate::drop::ErrorDetails {
+                context: Some(serde_json::json!(name)),
+                ..Default::default()
+              },
             });
           }
         }
       }
     }
 
-    if let Some(arr) = val.get("schemas").and_then(|v| v.as_array()) {
-      for (i, item) in arr.iter().enumerate() {
+    if let Some(map) = val.get("schemas").and_then(|v| v.as_object()) {
+      for (key, item) in map.iter() {
         match serde_json::from_value::<Schema>(item.clone()) {
-          Ok(mut schema) => {
-            let id = schema
-              .obj
-              .id
-              .clone()
-              .unwrap_or_else(|| format!("schema_{}", i));
-            schema.obj.id = Some(id.clone());
-            db.schemas.insert(id, schema);
+          Ok(schema) => {
+            db.schemas.insert(key.clone(), Arc::new(schema));
           }
           Err(e) => {
             errors.push(crate::drop::Error {
               code: "DATABASE_SCHEMA_PARSE_FAILED".to_string(),
-              message: format!("Failed to parse database schema: {}", e),
-              details: crate::drop::ErrorDetails::default(),
+              message: format!("Failed to parse database schema key '{}': {}", key, e),
+              details: crate::drop::ErrorDetails {
+                context: Some(serde_json::json!(key)),
+                ..Default::default()
+              },
             });
           }
         }
@@ -186,113 +213,331 @@ impl Database {
   }
 
   pub fn compile(&mut self, errors: &mut Vec<crate::drop::Error>) {
+    // Collect existing schemas patched in the databse
     let mut harvested = Vec::new();
-    for schema in self.schemas.values_mut() {
-      schema.collect_schemas(None, &mut harvested, errors);
+    for (id, schema_arc) in &self.schemas {
+      crate::database::schema::Schema::collect_schemas(
+        schema_arc,
+        id,
+        id.clone(),
+        &mut harvested,
+        errors,
+      );
+    }
+    for (id, schema_arc) in harvested {
+      self.schemas.insert(id, schema_arc);
     }
-    self.schemas.extend(harvested);
 
     self.collect_schemas(errors);
-    self.collect_depths();
-    self.collect_descendants();
 
     // Mathematically evaluate all property inheritances, formats, schemas, and foreign key edges topographically over OnceLocks
-    let mut visited = std::collections::HashSet::new();
-    for schema in self.schemas.values() {
-      schema.compile(self, &mut visited, errors);
+    for (id, schema_arc) in &self.schemas {
+      // First compile pass initializes exact structural root_id mapping to resolve DB constraints
+      let root_id = id.split('/').next().unwrap_or(id);
+      schema_arc
+        .as_ref()
+        .compile(self, root_id, id.clone(), errors);
+    }
+
+    // Phase 2: Synthesize Composed Filter References
+    let mut filter_schemas = Vec::new();
+    for (type_name, type_def) in &self.types {
+      for (id, schema_arc) in &type_def.schemas {
+        // Only run synthesis on actual structured, table-backed boundaries. Exclude subschemas!
+        let base_name = id.split('.').last().unwrap_or(id);
+        let is_table_backed = base_name == type_def.name;
+        if is_table_backed && !id.contains('/') {
+          if let Some(filter_schema) = schema_arc.compile_filter(self, id, errors) {
+            filter_schemas.push((
+              type_name.clone(),
+              format!("{}.filter", id),
+              Arc::new(filter_schema),
+            ));
+          }
+        }
+      }
+    }
+
+    let mut filter_ids = Vec::new();
+    for (type_name, id, filter_arc) in filter_schemas {
+      filter_ids.push(id.clone());
+      self.schemas.insert(id.clone(), filter_arc.clone());
+      if let Some(t) = self.types.get_mut(&type_name) {
+        t.schemas.insert(id, filter_arc);
+      }
+    }
+
+    // Now actively compile the newly injected filters to lock all nested compose references natively
+    for id in filter_ids {
+      if let Some(filter_arc) = self.schemas.get(&id).cloned() {
+        let root_id = id.split('/').next().unwrap_or(&id);
+        filter_arc
+          .as_ref()
+          .compile(self, root_id, id.clone(), errors);
+      }
     }
   }
 
   fn collect_schemas(&mut self, errors: &mut Vec<crate::drop::Error>) {
-    let mut to_insert = Vec::new();
+    let mut type_insert = Vec::new();
+    let mut punc_insert = Vec::new();
+    let mut enum_insert = Vec::new();
+    let mut global_insert = Vec::new();
 
     // Pass 1: Extract all Schemas structurally off top level definitions into the master registry.
     // Validate every node recursively via string filters natively!
-    for type_def in self.types.values() {
-      for mut schema in type_def.schemas.clone() {
-        schema.collect_schemas(None, &mut to_insert, errors);
-      }
-    }
-    for punc_def in self.puncs.values() {
-      for mut schema in punc_def.schemas.clone() {
-        schema.collect_schemas(None, &mut to_insert, errors);
-      }
-    }
-    for enum_def in self.enums.values() {
-      for mut schema in enum_def.schemas.clone() {
-        schema.collect_schemas(None, &mut to_insert, errors);
+    for (type_name, type_def) in &self.types {
+      for (id, schema_arc) in &type_def.schemas {
+        global_insert.push((id.clone(), Arc::clone(schema_arc)));
+        let mut local_insert = Vec::new();
+        crate::database::schema::Schema::collect_schemas(
+          schema_arc,
+          id,
+          id.clone(),
+          &mut local_insert,
+          errors,
+        );
+        for entry in &local_insert {
+          type_insert.push((type_name.clone(), entry.0.clone(), Arc::clone(&entry.1)));
+          global_insert.push((entry.0.clone(), Arc::clone(&entry.1)));
+        }
       }
     }
 
-    for (id, schema) in to_insert {
-      self.schemas.insert(id, schema);
+    for (punc_name, punc_def) in &self.puncs {
+      for (id, schema_arc) in &punc_def.schemas {
+        global_insert.push((id.clone(), Arc::clone(schema_arc)));
+        let mut local_insert = Vec::new();
+        crate::database::schema::Schema::collect_schemas(
+          schema_arc,
+          id,
+          id.clone(),
+          &mut local_insert,
+          errors,
+        );
+        for entry in &local_insert {
+          punc_insert.push((punc_name.clone(), entry.0.clone(), Arc::clone(&entry.1)));
+          global_insert.push((entry.0.clone(), Arc::clone(&entry.1)));
+        }
+      }
+    }
+
+    for (enum_name, enum_def) in &self.enums {
+      for (id, schema_arc) in &enum_def.schemas {
+        global_insert.push((id.clone(), Arc::clone(schema_arc)));
+        let mut local_insert = Vec::new();
+        crate::database::schema::Schema::collect_schemas(
+          schema_arc,
+          id,
+          id.clone(),
+          &mut local_insert,
+          errors,
+        );
+        for entry in &local_insert {
+          enum_insert.push((enum_name.clone(), entry.0.clone(), Arc::clone(&entry.1)));
+          global_insert.push((entry.0.clone(), Arc::clone(&entry.1)));
+        }
+      }
+    }
+
+    // Apply global inserts
+    for (id, schema_arc) in global_insert {
+      self.schemas.insert(id, schema_arc);
+    }
+
+    // Apply local scopes
+    for (origin_name, id, schema_arc) in type_insert {
+      if let Some(t) = self.types.get_mut(&origin_name) {
+        t.schemas.insert(id, schema_arc);
+      }
+    }
+    for (origin_name, id, schema_arc) in punc_insert {
+      if let Some(p) = self.puncs.get_mut(&origin_name) {
+        p.schemas.insert(id, schema_arc);
+      }
+    }
+    for (origin_name, id, schema_arc) in enum_insert {
+      if let Some(e) = self.enums.get_mut(&origin_name) {
+        e.schemas.insert(id, schema_arc);
+      }
     }
   }
 
-  fn collect_depths(&mut self) {
-    let mut depths: HashMap<String, usize> = HashMap::new();
-    let schema_ids: Vec<String> = self.schemas.keys().cloned().collect();
+  /// Inspects the Postgres pg_constraint relations catalog to securely identify
+  /// the precise Foreign Key connecting a parent and child hierarchy path.
+  pub fn resolve_relation<'a>(
+    &'a self,
+    parent_type: &str,
+    child_type: &str,
+    prop_name: &str,
+    relative_keys: Option<&Vec<String>>,
+    is_array: bool,
+    schema_id: Option<&str>,
+    path: &str,
+    errors: &mut Vec<crate::drop::Error>,
+  ) -> Option<(&'a crate::database::relation::Relation, bool)> {
+    // Enforce graph locality by ensuring we don't accidentally crawl to pure structural entity boundaries
+    if parent_type == "entity" && child_type == "entity" {
+      return None;
+    }
 
-    for id in schema_ids {
-      let mut current_id = id.clone();
-      let mut depth = 0;
-      let mut visited = HashSet::new();
+    let p_def = self.types.get(parent_type)?;
+    let c_def = self.types.get(child_type)?;
 
-      while let Some(schema) = self.schemas.get(&current_id) {
-        if !visited.insert(current_id.clone()) {
-          break; // Cycle detected
+    let mut matching_rels = Vec::new();
+    let mut directions = Vec::new();
+
+    // Scour the complete catalog for any Edge matching the inheritance scope of the two objects
+    // This automatically binds polymorphic structures (e.g. recognizing a relationship targeting User
+    // also natively binds instances specifically typed as Person).
+    let mut all_rels: Vec<&crate::database::relation::Relation> = self.relations.values().collect();
+    all_rels.sort_by(|a, b| a.constraint.cmp(&b.constraint));
+
+    for rel in all_rels {
+      let mut is_forward = p_def.hierarchy.contains(&rel.source_type)
+        && c_def.hierarchy.contains(&rel.destination_type);
+      let is_reverse = p_def.hierarchy.contains(&rel.destination_type)
+        && c_def.hierarchy.contains(&rel.source_type);
+
+      // Structural Cardinality Filtration:
+      // If the schema requires a collection (Array), it is mathematically impossible for a pure
+      // Forward scalar edge (where the parent holds exactly one UUID pointer) to fulfill a One-to-Many request.
+      // Thus, if it's an array, we fully reject pure Forward edges and only accept Reverse edges (or Junction edges).
+      if is_array && is_forward && !is_reverse {
+        is_forward = false;
+      }
+
+      if is_forward {
+        matching_rels.push(rel);
+        directions.push(true);
+      } else if is_reverse {
+        matching_rels.push(rel);
+        directions.push(false);
+      }
+    }
+
+    // Abort relation discovery early if no hierarchical inheritance match was found
+    if matching_rels.is_empty() {
+      let mut details = crate::drop::ErrorDetails {
+        path: Some(path.to_string()),
+        ..Default::default()
+      };
+      if let Some(sid) = schema_id {
+        details.schema = Some(sid.to_string());
+      }
+
+      errors.push(crate::drop::Error {
+        code: "EDGE_MISSING".to_string(),
+        message: format!(
+          "No database relation exists between '{}' and '{}' for property '{}'",
+          parent_type, child_type, prop_name
+        ),
+        details,
+      });
+      return None;
+    }
+
+    // Ideal State: The objects only share a solitary structural relation, resolving ambiguity instantly.
+    if matching_rels.len() == 1 {
+      return Some((matching_rels[0], directions[0]));
+    }
+
+    let mut chosen_idx = 0;
+    let mut resolved = false;
+
+    // Exact Prefix Disambiguation: Determine if the database specifically names this constraint
+    // directly mapping to the JSON Schema property name (e.g., `fk_{child}_{property_name}`)
+    for (i, rel) in matching_rels.iter().enumerate() {
+      if let Some(prefix) = &rel.prefix {
+        if prop_name.starts_with(prefix)
+          || prefix.starts_with(prop_name)
+          || prefix.replace("_", "") == prop_name.replace("_", "")
+        {
+          chosen_idx = i;
+          resolved = true;
+          break;
         }
-        if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &schema.obj.type_ {
-          if !crate::database::schema::is_primitive_type(t) {
-            current_id = t.clone();
-            depth += 1;
-            continue;
+      }
+    }
+
+    // Complex Subgraph Resolution: The database contains multiple equally explicit foreign key constraints
+    // linking these objects (such as pointing to `source` and `target` in Many-to-Many junction models).
+    if !resolved && relative_keys.is_some() {
+      // Twin Deduction Pass 1: We inspect the exact properties structurally defined inside the compiled payload
+      // to observe which explicit relation arrow the child payload natively consumes.
+      let keys = relative_keys.unwrap();
+      let mut consumed_rel_idx = None;
+      for (i, rel) in matching_rels.iter().enumerate() {
+        if let Some(prefix) = &rel.prefix {
+          if keys.contains(prefix) {
+            consumed_rel_idx = Some(i);
+            break; // Found the routing edge explicitly consumed by the schema payload
           }
         }
-        break;
       }
-      depths.insert(id, depth);
-    }
-    self.depths = depths;
-  }
 
-  fn collect_descendants(&mut self) {
-    let mut direct_refs: HashMap<String, Vec<String>> = HashMap::new();
-    for (id, schema) in &self.schemas {
-      if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &schema.obj.type_ {
-        if !crate::database::schema::is_primitive_type(t) {
-          direct_refs
-            .entry(t.clone())
-            .or_default()
-            .push(id.clone());
+      // Twin Deduction Pass 2: Knowing which arrow points outbound, we can mathematically deduce its twin
+      // providing the reverse ownership on the same junction boundary must be the incoming Edge to the parent.
+      if let Some(used_idx) = consumed_rel_idx {
+        let used_rel = matching_rels[used_idx];
+        let mut twin_ids = Vec::new();
+        for (i, rel) in matching_rels.iter().enumerate() {
+          if i != used_idx
+            && rel.source_type == used_rel.source_type
+            && rel.destination_type == used_rel.destination_type
+            && rel.prefix.is_some()
+          {
+            twin_ids.push(i);
+          }
+        }
+
+        if twin_ids.len() == 1 {
+          chosen_idx = twin_ids[0];
+          resolved = true;
         }
       }
     }
 
-    // Cache exhaustive descendants matrix for generic $family string lookups natively
-    let mut descendants = HashMap::new();
-    for id in self.schemas.keys() {
-      let mut desc_set = HashSet::new();
-      Self::collect_descendants_recursively(id, &direct_refs, &mut desc_set);
-      let mut desc_vec: Vec<String> = desc_set.into_iter().collect();
-      desc_vec.sort();
-
-      descendants.insert(id.clone(), desc_vec);
-    }
-    self.descendants = descendants;
-  }
-
-  fn collect_descendants_recursively(
-    target: &str,
-    direct_refs: &std::collections::HashMap<String, Vec<String>>,
-    descendants: &mut std::collections::HashSet<String>,
-  ) {
-    if let Some(children) = direct_refs.get(target) {
-      for child in children {
-        if descendants.insert(child.clone()) {
-          Self::collect_descendants_recursively(child, direct_refs, descendants);
+    // Implicit Base Fallback: If no complex explicit paths resolve, but exactly one relation
+    // sits entirely naked (without a constraint prefix), it must be the core structural parent ownership.
+    if !resolved {
+      let mut null_prefix_ids = Vec::new();
+      for (i, rel) in matching_rels.iter().enumerate() {
+        if rel.prefix.is_none() {
+          null_prefix_ids.push(i);
         }
       }
+      if null_prefix_ids.len() == 1 {
+        chosen_idx = null_prefix_ids[0];
+        resolved = true;
+      }
     }
+
+    // If we exhausted all mathematical deduction pathways and STILL cannot isolate a single edge,
+    // we must abort rather than silently guessing. Returning None prevents arbitrary SQL generation
+    // and forces a clean structural error for the architect.
+    if !resolved {
+      let mut details = crate::drop::ErrorDetails {
+        path: Some(path.to_string()),
+        context: serde_json::to_value(&matching_rels).ok(),
+        cause: Some("Multiple conflicting constraints found matching prefixes".to_string()),
+        ..Default::default()
+      };
+      if let Some(sid) = schema_id {
+        details.schema = Some(sid.to_string());
+      }
+
+      errors.push(crate::drop::Error {
+        code: "AMBIGUOUS_TYPE_RELATIONS".to_string(),
+        message: format!(
+          "Ambiguous database relation between '{}' and '{}' for property '{}'",
+          parent_type, child_type, prop_name
+        ),
+        details,
+      });
+      return None;
+    }
+
+    Some((matching_rels[chosen_idx], directions[chosen_idx]))
   }
 }

src/database/object.rs

@@ -0,0 +1,323 @@
+use crate::database::schema::Schema;
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::BTreeMap;
+use std::sync::Arc;
+use std::sync::OnceLock;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Case {
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub when: Option<Arc<Schema>>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub then: Option<Arc<Schema>>,
+  #[serde(rename = "else")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub else_: Option<Arc<Schema>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct SchemaObject {
+  // Core Schema Keywords
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub description: Option<String>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub title: Option<String>,
+  #[serde(default)] // Allow missing type
+  #[serde(rename = "type")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub type_: Option<SchemaTypeOrArray>, // Handles string or array of strings
+
+  // Object Keywords
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub properties: Option<BTreeMap<String, Arc<Schema>>>,
+  #[serde(rename = "patternProperties")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub pattern_properties: Option<BTreeMap<String, Arc<Schema>>>,
+  #[serde(rename = "additionalProperties")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub additional_properties: Option<Arc<Schema>>,
+  #[serde(rename = "family")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub family: Option<String>,
+
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub required: Option<Vec<String>>,
+
+  // dependencies can be schema dependencies or property dependencies
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub dependencies: Option<BTreeMap<String, Dependency>>,
+
+  // Array Keywords
+  #[serde(rename = "items")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub items: Option<Arc<Schema>>,
+  #[serde(rename = "prefixItems")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub prefix_items: Option<Vec<Arc<Schema>>>,
+
+  // String Validation
+  #[serde(rename = "minLength")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub min_length: Option<f64>,
+  #[serde(rename = "maxLength")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub max_length: Option<f64>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub pattern: Option<String>,
+
+  // Array Validation
+  #[serde(rename = "minItems")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub min_items: Option<f64>,
+  #[serde(rename = "maxItems")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub max_items: Option<f64>,
+  #[serde(rename = "uniqueItems")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub unique_items: Option<bool>,
+  #[serde(rename = "contains")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub contains: Option<Arc<Schema>>,
+  #[serde(rename = "minContains")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub min_contains: Option<f64>,
+  #[serde(rename = "maxContains")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub max_contains: Option<f64>,
+
+  // Object Validation
+  #[serde(rename = "minProperties")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub min_properties: Option<f64>,
+  #[serde(rename = "maxProperties")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub max_properties: Option<f64>,
+  #[serde(rename = "propertyNames")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub property_names: Option<Arc<Schema>>,
+
+  // Numeric Validation
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub format: Option<String>,
+  #[serde(rename = "enum")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub enum_: Option<Vec<Value>>, // `enum` is a reserved keyword in Rust
+  #[serde(
+    default,
+    rename = "const",
+    deserialize_with = "crate::database::object::deserialize_some"
+  )]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub const_: Option<Value>,
+
+  // Numeric Validation
+  #[serde(rename = "multipleOf")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub multiple_of: Option<f64>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub minimum: Option<f64>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub maximum: Option<f64>,
+  #[serde(rename = "exclusiveMinimum")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub exclusive_minimum: Option<f64>,
+  #[serde(rename = "exclusiveMaximum")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub exclusive_maximum: Option<f64>,
+
+  // Combining Keywords
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub cases: Option<Vec<Case>>,
+  #[serde(rename = "oneOf")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub one_of: Option<Vec<Arc<Schema>>>,
+  #[serde(rename = "not")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub not: Option<Arc<Schema>>,
+
+  // Custom Vocabularies
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub form: Option<Vec<String>>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub display: Option<Vec<String>>,
+  #[serde(rename = "enumNames")]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub enum_names: Option<Vec<String>>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub control: Option<String>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub actions: Option<BTreeMap<String, Action>>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub computer: Option<String>,
+  #[serde(default)]
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub extensible: Option<bool>,
+
+  // Contains ALL structural fields perfectly flattened from the ENTIRE Database inheritance tree (e.g. `entity` fields like `id`) as well as local fields hidden inside conditional `cases` blocks.
+  // This JSON exported array gives clients absolute deterministic visibility to O(1) validation and masking bounds without duplicating structural memory.
+  #[serde(rename = "compiledPropertyNames")]
+  #[serde(skip_deserializing)]
+  #[serde(skip_serializing_if = "crate::database::object::is_once_lock_vec_empty")]
+  #[serde(serialize_with = "crate::database::object::serialize_once_lock")]
+  pub compiled_property_names: OnceLock<Vec<String>>,
+
+  // Internal structural representation caching active AST Node maps. Unlike the Go framework counterpart, the JSPG implementation DOES natively include ALL ancestral inheritance boundary schemas because it compiles locally against the raw database graph.
+  #[serde(skip)]
+  pub compiled_properties: OnceLock<BTreeMap<String, Arc<Schema>>>,
+
+  #[serde(rename = "compiledDiscriminator")]
+  #[serde(skip_deserializing)]
+  #[serde(skip_serializing_if = "crate::database::object::is_once_lock_string_empty")]
+  #[serde(serialize_with = "crate::database::object::serialize_once_lock")]
+  pub compiled_discriminator: OnceLock<String>,
+
+  #[serde(rename = "compiledOptions")]
+  #[serde(skip_deserializing)]
+  #[serde(skip_serializing_if = "crate::database::object::is_once_lock_map_empty")]
+  #[serde(serialize_with = "crate::database::object::serialize_once_lock")]
+  pub compiled_options: OnceLock<BTreeMap<String, (Option<usize>, Option<String>)>>,
+
+  #[serde(rename = "compiledEdges")]
+  #[serde(skip_deserializing)]
+  #[serde(skip_serializing_if = "crate::database::object::is_once_lock_map_empty")]
+  #[serde(serialize_with = "crate::database::object::serialize_once_lock")]
+  pub compiled_edges: OnceLock<BTreeMap<String, crate::database::edge::Edge>>,
+
+  #[serde(skip)]
+  pub compiled_format: OnceLock<CompiledFormat>,
+  #[serde(skip)]
+  pub compiled_pattern: OnceLock<CompiledRegex>,
+  #[serde(skip)]
+  pub compiled_pattern_properties: OnceLock<Vec<(CompiledRegex, Arc<Schema>)>>,
+}
+
+/// Represents a compiled format validator
+#[derive(Clone)]
+pub enum CompiledFormat {
+  Func(fn(&serde_json::Value) -> Result<(), Box<dyn std::error::Error + Send + Sync>>),
+  Regex(regex::Regex),
+}
+
+impl std::fmt::Debug for CompiledFormat {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    match self {
+      CompiledFormat::Func(_) => write!(f, "CompiledFormat::Func(...)"),
+      CompiledFormat::Regex(r) => write!(f, "CompiledFormat::Regex({:?})", r),
+    }
+  }
+}
+
+/// A wrapper for compiled regex patterns
+#[derive(Debug, Clone)]
+pub struct CompiledRegex(pub regex::Regex);
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum SchemaTypeOrArray {
+  Single(String),
+  Multiple(Vec<String>),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Action {
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub navigate: Option<String>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub punc: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum Dependency {
+  Props(Vec<String>),
+  Schema(Arc<Schema>),
+}
+
+pub fn serialize_once_lock<T: serde::Serialize, S: serde::Serializer>(
+  lock: &OnceLock<T>,
+  serializer: S,
+) -> Result<S::Ok, S::Error> {
+  if let Some(val) = lock.get() {
+    val.serialize(serializer)
+  } else {
+    serializer.serialize_none()
+  }
+}
+
+pub fn is_once_lock_map_empty<K, V>(lock: &OnceLock<std::collections::BTreeMap<K, V>>) -> bool {
+  lock.get().map_or(true, |m| m.is_empty())
+}
+
+pub fn is_once_lock_vec_empty<T>(lock: &OnceLock<Vec<T>>) -> bool {
+  lock.get().map_or(true, |v| v.is_empty())
+}
+
+pub fn is_once_lock_string_empty(lock: &OnceLock<String>) -> bool {
+  lock.get().map_or(true, |s| s.is_empty())
+}
+
+// Schema mirrors the Go Punc Generator's schema struct for consistency.
+// It is an order-preserving representation of a JSON Schema.
+pub fn deserialize_some<'de, D>(deserializer: D) -> Result<Option<Value>, D::Error>
+where
+  D: serde::Deserializer<'de>,
+{
+  let v = Value::deserialize(deserializer)?;
+  Ok(Some(v))
+}
+
+pub fn is_primitive_type(t: &str) -> bool {
+  matches!(
+    t,
+    "string" | "number" | "integer" | "boolean" | "object" | "array" | "null"
+  )
+}
+
+impl SchemaObject {
+  pub fn get_discriminator_value(&self, dim: &str, schema_id: &str) -> Option<String> {
+    let is_split = self
+      .compiled_properties
+      .get()
+      .map_or(false, |p| p.contains_key("kind"));
+
+    if dim == "kind" {
+      let base = schema_id.split('/').last().unwrap_or(schema_id);
+      if let Some(idx) = base.rfind('.') {
+        return Some(base[..idx].to_string());
+      }
+    }
+
+    if dim == "type" {
+      let base = schema_id.split('/').last().unwrap_or(schema_id);
+      if is_split {
+        return Some(base.split('.').next_back().unwrap_or(base).to_string());
+      } else {
+        return Some(base.to_string());
+      }
+    }
+
+    None
+  }
+
+  pub fn requires_uuid_path(&self, db: &crate::database::Database) -> bool {
+    // 1. Explicitly defines "id" either directly or via inheritance/extension?
+    if self
+      .compiled_properties
+      .get()
+      .map_or(false, |p| p.contains_key("id"))
+    {
+      return true;
+    }
+
+    // 2. Implicit table-backed rule: Does its family boundary map directly to the global database catalog?
+    if let Some(family) = &self.family {
+      let base = family.split('.').next_back().unwrap_or(family);
+      if db.types.contains_key(base) {
+        return true;
+      }
+    }
+
+    false
+  }
+}

src/database/punc.rs

@@ -1,6 +1,7 @@
 use crate::database::page::Page;
 use crate::database::schema::Schema;
 use serde::{Deserialize, Serialize};
+use std::sync::Arc;
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 #[serde(default)]
@@ -14,7 +15,8 @@ pub struct Punc {
   pub public: bool,
   pub form: bool,
   pub get: Option<String>,
+  pub save: Option<String>,
   pub page: Option<Page>,
   #[serde(default)]
-  pub schemas: Vec<Schema>,
+  pub schemas: std::collections::BTreeMap<String, Arc<Schema>>,
 }

src/database/relation.rs

@@ -3,6 +3,8 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 #[serde(default)]
 pub struct Relation {
+  pub id: String,
+  pub r#type: String,
   pub constraint: String,
   pub source_type: String,
   pub source_columns: Vec<String>,

src/database/schema.rs

@@ -1,239 +1,6 @@
+use crate::database::object::*;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
-use std::collections::BTreeMap;
-use std::sync::Arc;
-use std::sync::OnceLock;
-
-pub fn serialize_once_lock<T: serde::Serialize, S: serde::Serializer>(
-  lock: &OnceLock<T>,
-  serializer: S,
-) -> Result<S::Ok, S::Error> {
-  if let Some(val) = lock.get() {
-    val.serialize(serializer)
-  } else {
-    serializer.serialize_none()
-  }
-}
-
-pub fn is_once_lock_map_empty<K, V>(lock: &OnceLock<std::collections::BTreeMap<K, V>>) -> bool {
-  lock.get().map_or(true, |m| m.is_empty())
-}
-
-pub fn is_once_lock_vec_empty<T>(lock: &OnceLock<Vec<T>>) -> bool {
-  lock.get().map_or(true, |v| v.is_empty())
-}
-
-// Schema mirrors the Go Punc Generator's schema struct for consistency.
-// It is an order-preserving representation of a JSON Schema.
-pub fn deserialize_some<'de, D>(deserializer: D) -> Result<Option<Value>, D::Error>
-where
-  D: serde::Deserializer<'de>,
-{
-  let v = Value::deserialize(deserializer)?;
-  Ok(Some(v))
-}
-
-pub fn is_primitive_type(t: &str) -> bool {
-  matches!(
-    t,
-    "string" | "number" | "integer" | "boolean" | "object" | "array" | "null"
-  )
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct Case {
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub when: Option<Arc<Schema>>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub then: Option<Arc<Schema>>,
-  #[serde(rename = "else")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub else_: Option<Arc<Schema>>,
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct SchemaObject {
-  // Core Schema Keywords
-  #[serde(rename = "$id")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub id: Option<String>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub description: Option<String>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub title: Option<String>,
-  #[serde(default)] // Allow missing type
-  #[serde(rename = "type")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub type_: Option<SchemaTypeOrArray>, // Handles string or array of strings
-
-  // Object Keywords
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub properties: Option<BTreeMap<String, Arc<Schema>>>,
-  #[serde(rename = "patternProperties")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub pattern_properties: Option<BTreeMap<String, Arc<Schema>>>,
-  #[serde(rename = "additionalProperties")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub additional_properties: Option<Arc<Schema>>,
-  #[serde(rename = "$family")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub family: Option<String>,
-
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub required: Option<Vec<String>>,
-
-  // dependencies can be schema dependencies or property dependencies
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub dependencies: Option<BTreeMap<String, Dependency>>,
-
-  // Array Keywords
-  #[serde(rename = "items")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub items: Option<Arc<Schema>>,
-  #[serde(rename = "prefixItems")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub prefix_items: Option<Vec<Arc<Schema>>>,
-
-  // String Validation
-  #[serde(rename = "minLength")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub min_length: Option<f64>,
-  #[serde(rename = "maxLength")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub max_length: Option<f64>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub pattern: Option<String>,
-
-  // Array Validation
-  #[serde(rename = "minItems")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub min_items: Option<f64>,
-  #[serde(rename = "maxItems")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub max_items: Option<f64>,
-  #[serde(rename = "uniqueItems")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub unique_items: Option<bool>,
-  #[serde(rename = "contains")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub contains: Option<Arc<Schema>>,
-  #[serde(rename = "minContains")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub min_contains: Option<f64>,
-  #[serde(rename = "maxContains")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub max_contains: Option<f64>,
-
-  // Object Validation
-  #[serde(rename = "minProperties")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub min_properties: Option<f64>,
-  #[serde(rename = "maxProperties")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub max_properties: Option<f64>,
-  #[serde(rename = "propertyNames")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub property_names: Option<Arc<Schema>>,
-
-  // Numeric Validation
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub format: Option<String>,
-  #[serde(rename = "enum")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub enum_: Option<Vec<Value>>, // `enum` is a reserved keyword in Rust
-  #[serde(
-    default,
-    rename = "const",
-    deserialize_with = "crate::database::schema::deserialize_some"
-  )]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub const_: Option<Value>,
-
-  // Numeric Validation
-  #[serde(rename = "multipleOf")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub multiple_of: Option<f64>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub minimum: Option<f64>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub maximum: Option<f64>,
-  #[serde(rename = "exclusiveMinimum")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub exclusive_minimum: Option<f64>,
-  #[serde(rename = "exclusiveMaximum")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub exclusive_maximum: Option<f64>,
-
-  // Combining Keywords
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub cases: Option<Vec<Case>>,
-  #[serde(rename = "oneOf")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub one_of: Option<Vec<Arc<Schema>>>,
-  #[serde(rename = "not")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub not: Option<Arc<Schema>>,
-
-  // Custom Vocabularies
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub form: Option<Vec<String>>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub display: Option<Vec<String>>,
-  #[serde(rename = "enumNames")]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub enum_names: Option<Vec<String>>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub control: Option<String>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub actions: Option<BTreeMap<String, Action>>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub computer: Option<String>,
-  #[serde(default)]
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub extensible: Option<bool>,
-
-  #[serde(rename = "compiledProperties")]
-  #[serde(skip_deserializing)]
-  #[serde(skip_serializing_if = "crate::database::schema::is_once_lock_vec_empty")]
-  #[serde(serialize_with = "crate::database::schema::serialize_once_lock")]
-  pub compiled_property_names: OnceLock<Vec<String>>,
-
-  #[serde(skip)]
-  pub compiled_properties: OnceLock<BTreeMap<String, Arc<Schema>>>,
-
-  #[serde(rename = "compiledEdges")]
-  #[serde(skip_deserializing)]
-  #[serde(skip_serializing_if = "crate::database::schema::is_once_lock_map_empty")]
-  #[serde(serialize_with = "crate::database::schema::serialize_once_lock")]
-  pub compiled_edges: OnceLock<BTreeMap<String, crate::database::edge::Edge>>,
-
-  #[serde(skip)]
-  pub compiled_format: OnceLock<CompiledFormat>,
-  #[serde(skip)]
-  pub compiled_pattern: OnceLock<CompiledRegex>,
-  #[serde(skip)]
-  pub compiled_pattern_properties: OnceLock<Vec<(CompiledRegex, Arc<Schema>)>>,
-}
-
-/// Represents a compiled format validator
-#[derive(Clone)]
-pub enum CompiledFormat {
-  Func(fn(&serde_json::Value) -> Result<(), Box<dyn std::error::Error + Send + Sync>>),
-  Regex(regex::Regex),
-}
-
-impl std::fmt::Debug for CompiledFormat {
-  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-    match self {
-      CompiledFormat::Func(_) => write!(f, "CompiledFormat::Func(...)"),
-      CompiledFormat::Regex(r) => write!(f, "CompiledFormat::Regex({:?})", r),
-    }
-  }
-}
-
-/// A wrapper for compiled regex patterns
-#[derive(Debug, Clone)]
-pub struct CompiledRegex(pub regex::Regex);
 
 #[derive(Debug, Clone, Serialize, Default)]
 pub struct Schema {
@@ -255,581 +22,6 @@ impl std::ops::DerefMut for Schema {
   }
 }
 
-impl Schema {
-  pub fn compile(
-    &self,
-    db: &crate::database::Database,
-    visited: &mut std::collections::HashSet<String>,
-    errors: &mut Vec<crate::drop::Error>,
-  ) {
-    if self.obj.compiled_properties.get().is_some() {
-      return;
-    }
-
-    if let Some(id) = &self.obj.id {
-      if !visited.insert(id.clone()) {
-        return; // Break cyclical resolution
-      }
-    }
-
-    if let Some(format_str) = &self.obj.format {
-      if let Some(fmt) = crate::database::formats::FORMATS.get(format_str.as_str()) {
-        let _ = self
-          .obj
-          .compiled_format
-          .set(crate::database::schema::CompiledFormat::Func(fmt.func));
-      }
-    }
-
-    if let Some(pattern_str) = &self.obj.pattern {
-      if let Ok(re) = regex::Regex::new(pattern_str) {
-        let _ = self
-          .obj
-          .compiled_pattern
-          .set(crate::database::schema::CompiledRegex(re));
-      }
-    }
-
-    if let Some(pattern_props) = &self.obj.pattern_properties {
-      let mut compiled = Vec::new();
-      for (k, v) in pattern_props {
-        if let Ok(re) = regex::Regex::new(k) {
-          compiled.push((crate::database::schema::CompiledRegex(re), v.clone()));
-        }
-      }
-      if !compiled.is_empty() {
-        let _ = self.obj.compiled_pattern_properties.set(compiled);
-      }
-    }
-
-    let mut props = std::collections::BTreeMap::new();
-
-    // 1. Resolve INHERITANCE dependencies first
-    if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &self.obj.type_ {
-      if !crate::database::schema::is_primitive_type(t) {
-        if let Some(parent) = db.schemas.get(t) {
-          parent.compile(db, visited, errors);
-          if let Some(p_props) = parent.obj.compiled_properties.get() {
-            props.extend(p_props.clone());
-          }
-        }
-      }
-    }
-
-    if let Some(crate::database::schema::SchemaTypeOrArray::Multiple(types)) = &self.obj.type_ {
-      let mut custom_type_count = 0;
-      for t in types {
-        if !crate::database::schema::is_primitive_type(t) {
-          custom_type_count += 1;
-        }
-      }
-
-      if custom_type_count > 1 {
-        errors.push(crate::drop::Error {
-          code: "MULTIPLE_INHERITANCE_PROHIBITED".to_string(),
-          message: format!(
-            "Schema '{}' attempts to extend multiple custom object pointers in its type array. Use 'oneOf' for polymorphism and tagged unions.",
-            self.obj.identifier().unwrap_or("unknown".to_string())
-          ),
-          details: crate::drop::ErrorDetails {
-             path: self.obj.identifier().unwrap_or("unknown".to_string()),
-             ..Default::default()
-          }
-        });
-      }
-
-      for t in types {
-        if !crate::database::schema::is_primitive_type(t) {
-          if let Some(parent) = db.schemas.get(t) {
-            parent.compile(db, visited, errors);
-          }
-        }
-      }
-    }
-
-    // 2. Add local properties
-    if let Some(local_props) = &self.obj.properties {
-      for (k, v) in local_props {
-        props.insert(k.clone(), v.clone());
-      }
-    }
-
-    // 3. Set the OnceLock!
-    let _ = self.obj.compiled_properties.set(props.clone());
-    let mut names: Vec<String> = props.keys().cloned().collect();
-    names.sort();
-    let _ = self.obj.compiled_property_names.set(names);
-
-    // 4. Compute Edges natively
-    let schema_edges = self.compile_edges(db, visited, &props, errors);
-    let _ = self.obj.compiled_edges.set(schema_edges);
-
-    // 5. Build our inline children properties recursively NOW! (Depth-first search)
-    if let Some(local_props) = &self.obj.properties {
-      for child in local_props.values() {
-        child.compile(db, visited, errors);
-      }
-    }
-    if let Some(items) = &self.obj.items {
-      items.compile(db, visited, errors);
-    }
-    if let Some(pattern_props) = &self.obj.pattern_properties {
-      for child in pattern_props.values() {
-        child.compile(db, visited, errors);
-      }
-    }
-    if let Some(additional_props) = &self.obj.additional_properties {
-      additional_props.compile(db, visited, errors);
-    }
-    if let Some(one_of) = &self.obj.one_of {
-      for child in one_of {
-        child.compile(db, visited, errors);
-      }
-    }
-    if let Some(arr) = &self.obj.prefix_items {
-      for child in arr {
-        child.compile(db, visited, errors);
-      }
-    }
-    if let Some(child) = &self.obj.not {
-      child.compile(db, visited, errors);
-    }
-    if let Some(child) = &self.obj.contains {
-      child.compile(db, visited, errors);
-    }
-    if let Some(cases) = &self.obj.cases {
-      for c in cases {
-        if let Some(child) = &c.when {
-          child.compile(db, visited, errors);
-        }
-        if let Some(child) = &c.then {
-          child.compile(db, visited, errors);
-        }
-        if let Some(child) = &c.else_ {
-          child.compile(db, visited, errors);
-        }
-      }
-    }
-
-    if let Some(id) = &self.obj.id {
-      visited.remove(id);
-    }
-  }
-
-  #[allow(unused_variables)]
-  fn validate_identifier(id: &str, field_name: &str, errors: &mut Vec<crate::drop::Error>) {
-    #[cfg(not(test))]
-    for c in id.chars() {
-      if !c.is_ascii_lowercase() && !c.is_ascii_digit() && c != '_' && c != '.' {
-        errors.push(crate::drop::Error {
-          code: "INVALID_IDENTIFIER".to_string(),
-          message: format!(
-            "Invalid character '{}' in JSON Schema '{}' property: '{}'. Identifiers must exclusively contain [a-z0-9_.]",
-            c, field_name, id
-          ),
-          details: crate::drop::ErrorDetails::default(),
-        });
-        return;
-      }
-    }
-  }
-
-  pub fn collect_schemas(
-    &mut self,
-    tracking_path: Option<String>,
-    to_insert: &mut Vec<(String, Schema)>,
-    errors: &mut Vec<crate::drop::Error>,
-  ) {
-    if let Some(id) = &self.obj.id {
-      Self::validate_identifier(id, "$id", errors);
-      to_insert.push((id.clone(), self.clone()));
-    }
-    if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &self.obj.type_ {
-      if !crate::database::schema::is_primitive_type(t) {
-        Self::validate_identifier(t, "type", errors);
-      }
-    }
-    if let Some(family) = &self.obj.family {
-      Self::validate_identifier(family, "$family", errors);
-    }
-
-    // Is this schema an inline ad-hoc composition?
-    // Meaning it has a tracking context, lacks an explicit $id, but extends an Entity ref with explicit properties!
-    if self.obj.id.is_none() && self.obj.properties.is_some() {
-      if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &self.obj.type_ {
-        if !crate::database::schema::is_primitive_type(t) {
-          if let Some(ref path) = tracking_path {
-            to_insert.push((path.clone(), self.clone()));
-          }
-        }
-      }
-    }
-
-    // Provide the path origin to children natively, prioritizing the explicit `$id` boundary if one exists
-    let origin_path = self.obj.id.clone().or(tracking_path);
-
-    self.collect_child_schemas(origin_path, to_insert, errors);
-  }
-
-  pub fn collect_child_schemas(
-    &mut self,
-    origin_path: Option<String>,
-    to_insert: &mut Vec<(String, Schema)>,
-    errors: &mut Vec<crate::drop::Error>,
-  ) {
-    if let Some(props) = &mut self.obj.properties {
-      for (k, v) in props.iter_mut() {
-        let mut inner = (**v).clone();
-        let next_path = origin_path.as_ref().map(|o| format!("{}/{}", o, k));
-        inner.collect_schemas(next_path, to_insert, errors);
-        *v = Arc::new(inner);
-      }
-    }
-
-    if let Some(pattern_props) = &mut self.obj.pattern_properties {
-      for (k, v) in pattern_props.iter_mut() {
-        let mut inner = (**v).clone();
-        let next_path = origin_path.as_ref().map(|o| format!("{}/{}", o, k));
-        inner.collect_schemas(next_path, to_insert, errors);
-        *v = Arc::new(inner);
-      }
-    }
-
-    let mut map_arr = |arr: &mut Vec<Arc<Schema>>| {
-      for v in arr.iter_mut() {
-        let mut inner = (**v).clone();
-        inner.collect_schemas(origin_path.clone(), to_insert, errors);
-        *v = Arc::new(inner);
-      }
-    };
-
-    if let Some(arr) = &mut self.obj.prefix_items {
-      map_arr(arr);
-    }
-
-    if let Some(arr) = &mut self.obj.one_of {
-      map_arr(arr);
-    }
-
-    let mut map_opt = |opt: &mut Option<Arc<Schema>>, pass_path: bool| {
-      if let Some(v) = opt {
-        let mut inner = (**v).clone();
-        let next = if pass_path { origin_path.clone() } else { None };
-        inner.collect_schemas(next, to_insert, errors);
-        *v = Arc::new(inner);
-      }
-    };
-
-    map_opt(&mut self.obj.additional_properties, false);
-
-    // `items` absolutely must inherit the EXACT property path assigned to the Array wrapper!
-    // This allows nested Arrays enclosing bare Entity structs to correctly register as the boundary mapping.
-    map_opt(&mut self.obj.items, true);
-
-    map_opt(&mut self.obj.not, false);
-    map_opt(&mut self.obj.contains, false);
-    map_opt(&mut self.obj.property_names, false);
-    if let Some(cases) = &mut self.obj.cases {
-      for c in cases.iter_mut() {
-        if let Some(when) = &mut c.when {
-          let mut inner = (**when).clone();
-          inner.collect_schemas(origin_path.clone(), to_insert, errors);
-          *when = Arc::new(inner);
-        }
-        if let Some(then) = &mut c.then {
-          let mut inner = (**then).clone();
-          inner.collect_schemas(origin_path.clone(), to_insert, errors);
-          *then = Arc::new(inner);
-        }
-        if let Some(else_) = &mut c.else_ {
-          let mut inner = (**else_).clone();
-          inner.collect_schemas(origin_path.clone(), to_insert, errors);
-          *else_ = Arc::new(inner);
-        }
-      }
-    }
-  }
-
-  /// Dynamically infers and compiles all structural database relationships between this Schema
-  /// and its nested children. This functions recursively traverses the JSON Schema abstract syntax
-  /// tree, identifies physical PostgreSQL table boundaries, and locks the resulting relation
-  /// constraint paths directly onto the `compiled_edges` map in O(1) memory.
-  pub fn compile_edges(
-    &self,
-    db: &crate::database::Database,
-    visited: &mut std::collections::HashSet<String>,
-    props: &std::collections::BTreeMap<String, std::sync::Arc<Schema>>,
-    errors: &mut Vec<crate::drop::Error>,
-  ) -> std::collections::BTreeMap<String, crate::database::edge::Edge> {
-    let mut schema_edges = std::collections::BTreeMap::new();
-
-    // Determine the physical Database Table Name this schema structurally represents
-    // Plucks the polymorphic discriminator via dot-notation (e.g. extracting "person" from "full.person")
-    let mut parent_type_name = None;
-    if let Some(family) = &self.obj.family {
-      parent_type_name = Some(family.split('.').next_back().unwrap_or(family).to_string());
-    } else if let Some(identifier) = self.obj.identifier() {
-      parent_type_name = Some(
-        identifier
-          .split('.')
-          .next_back()
-          .unwrap_or(&identifier)
-          .to_string(),
-      );
-    }
-
-    if let Some(p_type) = parent_type_name {
-      // Proceed only if the resolved table physically exists within the Postgres Type hierarchy
-      if db.types.contains_key(&p_type) {
-        // Iterate over all discovered schema boundaries mapped inside the object
-        for (prop_name, prop_schema) in props {
-          let mut child_type_name = None;
-          let mut target_schema = prop_schema.clone();
-          let mut is_array = false;
-
-          // Structurally unpack the inner target entity if the object maps to an array list
-          if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) =
-            &prop_schema.obj.type_
-          {
-            if t == "array" {
-              is_array = true;
-              if let Some(items) = &prop_schema.obj.items {
-                target_schema = items.clone();
-              }
-            }
-          }
-
-          // Determine the physical Postgres table backing the nested child schema recursively
-          if let Some(family) = &target_schema.obj.family {
-            child_type_name = Some(family.split('.').next_back().unwrap_or(family).to_string());
-          } else if let Some(ref_id) = target_schema.obj.identifier() {
-            child_type_name = Some(ref_id.split('.').next_back().unwrap_or(&ref_id).to_string());
-          } else if let Some(arr) = &target_schema.obj.one_of {
-            if let Some(first) = arr.first() {
-              if let Some(ref_id) = first.obj.identifier() {
-                child_type_name =
-                  Some(ref_id.split('.').next_back().unwrap_or(&ref_id).to_string());
-              }
-            }
-          }
-
-          if let Some(c_type) = child_type_name {
-            if db.types.contains_key(&c_type) {
-              // Ensure the child Schema's AST has accurately compiled its own physical property keys so we can
-              // inject them securely for Many-to-Many Twin Deduction disambiguation matching.
-              target_schema.compile(db, visited, errors);
-              if let Some(compiled_target_props) = target_schema.obj.compiled_properties.get() {
-                let keys_for_ambiguity: Vec<String> =
-                  compiled_target_props.keys().cloned().collect();
-
-                // Interrogate the Database catalog graph to discover the exact Foreign Key Constraint connecting the components
-                if let Some((relation, is_forward)) = resolve_relation(
-                  db,
-                  &p_type,
-                  &c_type,
-                  prop_name,
-                  Some(&keys_for_ambiguity),
-                  is_array,
-                  self.id.as_deref(),
-                  &format!("/{}", prop_name),
-                  errors,
-                ) {
-                  schema_edges.insert(
-                    prop_name.clone(),
-                    crate::database::edge::Edge {
-                      constraint: relation.constraint.clone(),
-                      forward: is_forward,
-                    },
-                  );
-                }
-              }
-            }
-          }
-        }
-      }
-    }
-    schema_edges
-  }
-}
-
-/// Inspects the Postgres pg_constraint relations catalog to securely identify
-/// the precise Foreign Key connecting a parent and child hierarchy path.
-pub(crate) fn resolve_relation<'a>(
-  db: &'a crate::database::Database,
-  parent_type: &str,
-  child_type: &str,
-  prop_name: &str,
-  relative_keys: Option<&Vec<String>>,
-  is_array: bool,
-  schema_id: Option<&str>,
-  path: &str,
-  errors: &mut Vec<crate::drop::Error>,
-) -> Option<(&'a crate::database::relation::Relation, bool)> {
-  // Enforce graph locality by ensuring we don't accidentally crawl to pure structural entity boundaries
-  if parent_type == "entity" && child_type == "entity" {
-    return None;
-  }
-
-  let p_def = db.types.get(parent_type)?;
-  let c_def = db.types.get(child_type)?;
-
-  let mut matching_rels = Vec::new();
-  let mut directions = Vec::new();
-
-  // Scour the complete catalog for any Edge matching the inheritance scope of the two objects
-  // This automatically binds polymorphic structures (e.g. recognizing a relationship targeting User
-  // also natively binds instances specifically typed as Person).
-  let mut all_rels: Vec<&crate::database::relation::Relation> = db.relations.values().collect();
-  all_rels.sort_by(|a, b| a.constraint.cmp(&b.constraint));
-
-  for rel in all_rels {
-    let mut is_forward =
-      p_def.hierarchy.contains(&rel.source_type) && c_def.hierarchy.contains(&rel.destination_type);
-    let is_reverse =
-      p_def.hierarchy.contains(&rel.destination_type) && c_def.hierarchy.contains(&rel.source_type);
-
-    // Structural Cardinality Filtration:
-    // If the schema requires a collection (Array), it is mathematically impossible for a pure
-    // Forward scalar edge (where the parent holds exactly one UUID pointer) to fulfill a One-to-Many request.
-    // Thus, if it's an array, we fully reject pure Forward edges and only accept Reverse edges (or Junction edges).
-    if is_array && is_forward && !is_reverse {
-      is_forward = false;
-    }
-
-    if is_forward {
-      matching_rels.push(rel);
-      directions.push(true);
-    } else if is_reverse {
-      matching_rels.push(rel);
-      directions.push(false);
-    }
-  }
-
-  // Abort relation discovery early if no hierarchical inheritance match was found
-  if matching_rels.is_empty() {
-    let mut details = crate::drop::ErrorDetails {
-      path: path.to_string(),
-      ..Default::default()
-    };
-    if let Some(sid) = schema_id {
-      details.schema = Some(sid.to_string());
-    }
-
-    errors.push(crate::drop::Error {
-      code: "EDGE_MISSING".to_string(),
-      message: format!(
-        "No database relation exists between '{}' and '{}' for property '{}'",
-        parent_type, child_type, prop_name
-      ),
-      details,
-    });
-    return None;
-  }
-
-  // Ideal State: The objects only share a solitary structural relation, resolving ambiguity instantly.
-  if matching_rels.len() == 1 {
-    return Some((matching_rels[0], directions[0]));
-  }
-
-  let mut chosen_idx = 0;
-  let mut resolved = false;
-
-  // Exact Prefix Disambiguation: Determine if the database specifically names this constraint
-  // directly mapping to the JSON Schema property name (e.g., `fk_{child}_{property_name}`)
-  for (i, rel) in matching_rels.iter().enumerate() {
-    if let Some(prefix) = &rel.prefix {
-      if prop_name.starts_with(prefix)
-        || prefix.starts_with(prop_name)
-        || prefix.replace("_", "") == prop_name.replace("_", "")
-      {
-        chosen_idx = i;
-        resolved = true;
-        break;
-      }
-    }
-  }
-
-  // Complex Subgraph Resolution: The database contains multiple equally explicit foreign key constraints
-  // linking these objects (such as pointing to `source` and `target` in Many-to-Many junction models).
-  if !resolved && relative_keys.is_some() {
-    // Twin Deduction Pass 1: We inspect the exact properties structurally defined inside the compiled payload
-    // to observe which explicit relation arrow the child payload natively consumes.
-    let keys = relative_keys.unwrap();
-    let mut consumed_rel_idx = None;
-    for (i, rel) in matching_rels.iter().enumerate() {
-      if let Some(prefix) = &rel.prefix {
-        if keys.contains(prefix) {
-          consumed_rel_idx = Some(i);
-          break; // Found the routing edge explicitly consumed by the schema payload
-        }
-      }
-    }
-
-    // Twin Deduction Pass 2: Knowing which arrow points outbound, we can mathematically deduce its twin
-    // providing the reverse ownership on the same junction boundary must be the incoming Edge to the parent.
-    if let Some(used_idx) = consumed_rel_idx {
-      let used_rel = matching_rels[used_idx];
-      let mut twin_ids = Vec::new();
-      for (i, rel) in matching_rels.iter().enumerate() {
-        if i != used_idx
-          && rel.source_type == used_rel.source_type
-          && rel.destination_type == used_rel.destination_type
-          && rel.prefix.is_some()
-        {
-          twin_ids.push(i);
-        }
-      }
-
-      if twin_ids.len() == 1 {
-        chosen_idx = twin_ids[0];
-        resolved = true;
-      }
-    }
-  }
-
-  // Implicit Base Fallback: If no complex explicit paths resolve, but exactly one relation
-  // sits entirely naked (without a constraint prefix), it must be the core structural parent ownership.
-  if !resolved {
-    let mut null_prefix_ids = Vec::new();
-    for (i, rel) in matching_rels.iter().enumerate() {
-      if rel.prefix.is_none() {
-        null_prefix_ids.push(i);
-      }
-    }
-    if null_prefix_ids.len() == 1 {
-      chosen_idx = null_prefix_ids[0];
-      resolved = true;
-    }
-  }
-
-  // If we exhausted all mathematical deduction pathways and STILL cannot isolate a single edge,
-  // we must abort rather than silently guessing. Returning None prevents arbitrary SQL generation
-  // and forces a clean structural error for the architect.
-  if !resolved {
-    let mut details = crate::drop::ErrorDetails {
-      path: path.to_string(),
-      context: serde_json::to_value(&matching_rels).ok(),
-      cause: Some("Multiple conflicting constraints found matching prefixes".to_string()),
-      ..Default::default()
-    };
-    if let Some(sid) = schema_id {
-      details.schema = Some(sid.to_string());
-    }
-
-    errors.push(crate::drop::Error {
-      code: "AMBIGUOUS_TYPE_RELATIONS".to_string(),
-      message: format!(
-        "Ambiguous database relation between '{}' and '{}' for property '{}'",
-        parent_type, child_type, prop_name
-      ),
-      details,
-    });
-    return None;
-  }
-
-  Some((matching_rels[chosen_idx], directions[chosen_idx]))
-}
-
 impl<'de> Deserialize<'de> for Schema {
   fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
   where
@@ -880,38 +72,3 @@ impl<'de> Deserialize<'de> for Schema {
     })
   }
 }
-
-impl SchemaObject {
-  pub fn identifier(&self) -> Option<String> {
-    if let Some(id) = &self.id {
-      return Some(id.split('.').next_back().unwrap_or("").to_string());
-    }
-    if let Some(SchemaTypeOrArray::Single(t)) = &self.type_ {
-      if !is_primitive_type(t) {
-        return Some(t.split('.').next_back().unwrap_or("").to_string());
-      }
-    }
-    None
-  }
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(untagged)]
-pub enum SchemaTypeOrArray {
-  Single(String),
-  Multiple(Vec<String>),
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct Action {
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub navigate: Option<String>,
-  #[serde(skip_serializing_if = "Option::is_none")]
-  pub punc: Option<String>,
-}
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(untagged)]
-pub enum Dependency {
-  Props(Vec<String>),
-  Schema(Arc<Schema>),
-}

src/database/type.rs

@@ -2,6 +2,7 @@ use std::collections::HashSet;
 
 use crate::database::schema::Schema;
 use serde::{Deserialize, Serialize};
+use std::sync::Arc;
 use serde_json::Value;
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
@@ -38,5 +39,5 @@ pub struct Type {
   pub default_fields: Vec<String>,
   pub field_types: Option<Value>,
   #[serde(default)]
-  pub schemas: Vec<Schema>,
+  pub schemas: std::collections::BTreeMap<String, Arc<Schema>>,
 }

src/drop.rs

@@ -66,7 +66,8 @@ pub struct Error {
 
 #[derive(Debug, Serialize, Deserialize, Clone, Default)]
 pub struct ErrorDetails {
-  pub path: String,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub path: Option<String>,
   #[serde(skip_serializing_if = "Option::is_none")]
   pub cause: Option<String>,
   #[serde(skip_serializing_if = "Option::is_none")]

src/lib.rs

@@ -30,7 +30,7 @@ fn jspg_failure() -> JsonB {
     code: "ENGINE_NOT_INITIALIZED".to_string(),
     message: "JSPG extension has not been initialized via jspg_setup".to_string(),
     details: crate::drop::ErrorDetails {
-      path: "".to_string(),
+      path: None,
       cause: None,
       context: None,
       schema: None,
@@ -72,7 +72,7 @@ pub fn jspg_merge(schema_id: &str, data: JsonB) -> JsonB {
 }
 
 #[cfg_attr(not(test), pg_extern)]
-pub fn jspg_query(schema_id: &str, filters: Option<JsonB>) -> JsonB {
+pub fn jspg_query(schema_id: &str, filter: Option<JsonB>) -> JsonB {
   let engine_opt = {
     let lock = GLOBAL_JSPG.read().unwrap();
     lock.clone()
@@ -82,7 +82,7 @@ pub fn jspg_query(schema_id: &str, filters: Option<JsonB>) -> JsonB {
     Some(engine) => {
       let drop = engine
         .queryer
-        .query(schema_id, filters.as_ref().map(|f| &f.0));
+        .query(schema_id, filter.as_ref().map(|f| &f.0));
       JsonB(serde_json::to_value(drop).unwrap())
     }
     None => jspg_failure(),
@@ -109,7 +109,7 @@ pub fn jspg_validate(schema_id: &str, instance: JsonB) -> JsonB {
 }
 
 #[cfg_attr(not(test), pg_extern)]
-pub fn jspg_schemas() -> JsonB {
+pub fn jspg_database() -> JsonB {
   let engine_opt = {
     let lock = GLOBAL_JSPG.read().unwrap();
     lock.clone()
@@ -117,9 +117,9 @@ pub fn jspg_schemas() -> JsonB {
 
   match engine_opt {
     Some(engine) => {
-      let schemas_json = serde_json::to_value(&engine.database.schemas)
+      let database_json = serde_json::to_value(&engine.database)
         .unwrap_or(serde_json::Value::Object(serde_json::Map::new()));
-      let drop = crate::drop::Drop::success_with_val(schemas_json);
+      let drop = crate::drop::Drop::success_with_val(database_json);
       JsonB(serde_json::to_value(drop).unwrap())
     }
     None => jspg_failure(),

src/merger/mod.rs

@@ -25,13 +25,13 @@ impl Merger {
     let mut notifications_queue = Vec::new();
 
     let target_schema = match self.db.schemas.get(schema_id) {
-      Some(s) => Arc::new(s.clone()),
+      Some(s) => Arc::clone(s),
       None => {
         return crate::drop::Drop::with_errors(vec![crate::drop::Error {
           code: "MERGE_FAILED".to_string(),
           message: format!("Unknown schema_id: {}", schema_id),
           details: crate::drop::ErrorDetails {
-            path: "".to_string(),
+            path: None,
             cause: None,
             context: Some(data),
             schema: None,
@@ -76,7 +76,7 @@ impl Merger {
           code: final_code,
           message: final_message,
           details: crate::drop::ErrorDetails {
-            path: "".to_string(),
+            path: None,
             cause: final_cause,
             context: None,
             schema: None,
@@ -92,7 +92,7 @@ impl Merger {
           code: "MERGE_FAILED".to_string(),
           message: format!("Executor Error in pre-ordered notify: {:?}", e),
           details: crate::drop::ErrorDetails {
-            path: "".to_string(),
+            path: None,
             cause: None,
             context: None,
             schema: None,
@@ -131,13 +131,43 @@ impl Merger {
 
   pub(crate) fn merge_internal(
     &self,
-    schema: Arc<crate::database::schema::Schema>,
+    mut schema: Arc<crate::database::schema::Schema>,
     data: Value,
     notifications: &mut Vec<String>,
   ) -> Result<Value, String> {
     match data {
       Value::Array(items) => self.merge_array(schema, items, notifications),
-      Value::Object(map) => self.merge_object(schema, map, notifications),
+      Value::Object(map) => {
+        if let Some(options) = schema.obj.compiled_options.get() {
+          if let Some(disc) = schema.obj.compiled_discriminator.get() {
+            let val = map.get(disc).and_then(|v| v.as_str());
+            if let Some(v) = val {
+              if let Some((idx_opt, target_id_opt)) = options.get(v) {
+                if let Some(target_id) = target_id_opt {
+                  if let Some(target_schema) = self.db.schemas.get(target_id) {
+                    schema = Arc::clone(target_schema);
+                  } else {
+                    return Err(format!("Polymorphic mapped target '{}' not found in database registry", target_id));
+                  }
+                } else if let Some(idx) = idx_opt {
+                  if let Some(target_schema) = schema.obj.one_of.as_ref().and_then(|options| options.get(*idx)) {
+                     schema = Arc::clone(target_schema);
+                  } else {
+                     return Err(format!("Polymorphic index target '{}' not found in local oneOf array", idx));
+                  }
+                } else {
+                  return Err(format!("Polymorphic mapped target has no path"));
+                }
+              } else {
+                return Err(format!("Polymorphic discriminator {}='{}' matched no compiled options", disc, v));
+              }
+            } else {
+              return Err(format!("Polymorphic merging failed: missing required discriminator '{}'", disc));
+            }
+          }
+        }
+        self.merge_object(schema, map, notifications)
+      },
       _ => Err("Invalid merge payload: root must be an Object or Array".to_string()),
     }
   }
@@ -149,7 +179,7 @@ impl Merger {
     notifications: &mut Vec<String>,
   ) -> Result<Value, String> {
     let mut item_schema = schema.clone();
-    if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &schema.obj.type_ {
+    if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &schema.obj.type_ {
       if t == "array" {
         if let Some(items_def) = &schema.obj.items {
           item_schema = items_def.clone();
@@ -195,7 +225,7 @@ impl Merger {
     for (k, v) in obj {
       // Always retain system and unmapped core fields natively implicitly mapped to the Postgres tables
       if k == "id" || k == "type" || k == "created" {
-        entity_fields.insert(k.clone(), v.clone());
+        entity_fields.insert(k, v);
         continue;
       }
 
@@ -214,18 +244,18 @@ impl Merger {
             _ => "field", // Malformed edge data?
           };
           if typeof_v == "object" {
-            entity_objects.insert(k.clone(), (v.clone(), prop_schema.clone()));
+            entity_objects.insert(k, (v, prop_schema.clone()));
           } else if typeof_v == "array" {
-            entity_arrays.insert(k.clone(), (v.clone(), prop_schema.clone()));
+            entity_arrays.insert(k, (v, prop_schema.clone()));
           } else {
-            entity_fields.insert(k.clone(), v.clone());
+            entity_fields.insert(k, v);
           }
         } else {
           // Not an edge! It's a raw Postgres column (e.g., JSONB, text[])
-          entity_fields.insert(k.clone(), v.clone());
+          entity_fields.insert(k, v);
         }
       } else if type_def.fields.contains(&k) {
-        entity_fields.insert(k.clone(), v.clone());
+        entity_fields.insert(k, v);
       }
     }
 
@@ -369,7 +399,7 @@ impl Merger {
                 );
 
                 let mut item_schema = rel_schema.clone();
-                if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) =
+                if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) =
                   &rel_schema.obj.type_
                 {
                   if t == "array" {
@@ -504,7 +534,7 @@ impl Merger {
 
       entity_change_kind = Some("create".to_string());
 
-      let mut new_fields = changes.clone();
+      let mut new_fields = changes;
       new_fields.insert("id".to_string(), id_val);
       new_fields.insert("type".to_string(), Value::String(type_name.to_string()));
       new_fields.insert("created_by".to_string(), Value::String(user_id.to_string()));
@@ -544,7 +574,7 @@ impl Merger {
         Some("update".to_string())
       };
 
-      let mut new_fields = changes.clone();
+      let mut new_fields = changes;
       new_fields.insert(
         "id".to_string(),
         entity_fetched.as_ref().unwrap().get("id").unwrap().clone(),

src/queryer/compiler.rs

@@ -1,5 +1,6 @@
 use crate::database::Database;
 use std::sync::Arc;
+
 pub struct Compiler<'a> {
   pub db: &'a Database,
   pub filter_keys: &'a [String],
@@ -16,6 +17,8 @@ pub struct Node<'a> {
   pub property_name: Option<String>,
   pub depth: usize,
   pub ast_path: String,
+  pub is_polymorphic_branch: bool,
+  pub schema_id: Option<String>,
 }
 
 impl<'a> Compiler<'a> {
@@ -27,7 +30,7 @@ impl<'a> Compiler<'a> {
       .get(schema_id)
       .ok_or_else(|| format!("Schema not found: {}", schema_id))?;
 
-    let target_schema = std::sync::Arc::new(schema.clone());
+    let target_schema = std::sync::Arc::clone(schema);
 
     let mut compiler = Compiler {
       db: &self.db,
@@ -44,6 +47,8 @@ impl<'a> Compiler<'a> {
       property_name: None,
       depth: 0,
       ast_path: String::new(),
+      is_polymorphic_branch: false,
+      schema_id: Some(schema_id.to_string()),
     };
 
     let (sql, _) = compiler.compile_node(node)?;
@@ -55,7 +60,7 @@ impl<'a> Compiler<'a> {
   fn compile_node(&mut self, node: Node<'a>) -> Result<(String, String), String> {
     // Determine the base schema type (could be an array, object, or literal)
     match &node.schema.obj.type_ {
-      Some(crate::database::schema::SchemaTypeOrArray::Single(t)) if t == "array" => {
+      Some(crate::database::object::SchemaTypeOrArray::Single(t)) if t == "array" => {
         self.compile_array(node)
       }
       _ => self.compile_reference(node),
@@ -63,17 +68,31 @@ impl<'a> Compiler<'a> {
   }
 
   fn compile_array(&mut self, node: Node<'a>) -> Result<(String, String), String> {
-    // 1. Array of DB Entities (`type` or `$family` pointing to a table limit)
     if let Some(items) = &node.schema.obj.items {
       let mut resolved_type = None;
-      if let Some(family_target) = items.obj.family.as_ref() {
-        let base_type_name = family_target
-          .split('.')
-          .next_back()
-          .unwrap_or(family_target);
-        resolved_type = self.db.types.get(base_type_name);
-      } else if let Some(base_type_name) = items.obj.identifier() {
-        resolved_type = self.db.types.get(&base_type_name);
+      if let Some(sid) = &node.schema_id {
+        resolved_type = self
+          .db
+          .types
+          .get(&sid.split('.').next_back().unwrap_or(sid).to_string());
+      }
+
+      if resolved_type.is_none() {
+        if let Some(family_target) = items.obj.family.as_ref() {
+          let base_type_name = family_target
+            .split('.')
+            .next_back()
+            .unwrap_or(family_target);
+          resolved_type = self.db.types.get(base_type_name);
+        } else if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &items.obj.type_
+        {
+          if !crate::database::object::is_primitive_type(t) {
+            resolved_type = self
+              .db
+              .types
+              .get(&t.split('.').next_back().unwrap_or(t).to_string());
+          }
+        }
       }
 
       if let Some(type_def) = resolved_type {
@@ -102,57 +121,62 @@ impl<'a> Compiler<'a> {
     // Determine if this schema represents a Database Entity
     let mut resolved_type = None;
 
-    if let Some(family_target) = node.schema.obj.family.as_ref() {
-      resolved_type = self.db.types.get(family_target);
-    } else if let Some(base_type_name) = node.schema.obj.identifier() {
+    if let Some(sid) = &node.schema_id {
+      let base_type_name = sid.split('.').next_back().unwrap_or(sid).to_string();
       resolved_type = self.db.types.get(&base_type_name);
     }
 
+    if resolved_type.is_none() {
+      if let Some(family_target) = node.schema.obj.family.as_ref() {
+        let base_type_name = family_target
+          .split('.')
+          .next_back()
+          .unwrap_or(family_target);
+        resolved_type = self.db.types.get(base_type_name);
+      } else if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) =
+        &node.schema.obj.type_
+      {
+        if !crate::database::object::is_primitive_type(t) {
+          let base_type_name = t.split('.').next_back().unwrap_or(t).to_string();
+          resolved_type = self.db.types.get(&base_type_name);
+        }
+      }
+    }
+
     if let Some(type_def) = resolved_type {
       return self.compile_entity(type_def, node.clone(), false);
     }
 
     // Handle Direct Refs via type pointer
-    if let Some(crate::database::schema::SchemaTypeOrArray::Single(t)) = &node.schema.obj.type_ {
-      if !crate::database::schema::is_primitive_type(t) {
+    if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &node.schema.obj.type_ {
+      if !crate::database::object::is_primitive_type(t) {
         // If it's just an ad-hoc struct ref, we should resolve it
         if let Some(target_schema) = self.db.schemas.get(t) {
           let mut ref_node = node.clone();
-          ref_node.schema = std::sync::Arc::new(target_schema.clone());
+          ref_node.schema = Arc::clone(target_schema);
+          ref_node.schema_id = Some(t.clone());
           return self.compile_node(ref_node);
         }
         return Err(format!("Unresolved schema type pointer: {}", t));
       }
     }
-    // Handle $family Polymorphism fallbacks for relations
-    if let Some(family_target) = &node.schema.obj.family {
-      let mut all_targets = vec![family_target.clone()];
-      if let Some(descendants) = self.db.descendants.get(family_target) {
-        all_targets.extend(descendants.clone());
+    // Handle Polymorphism fallbacks for relations
+    if node.schema.obj.family.is_some() || node.schema.obj.one_of.is_some() {
+      if let Some(options) = node.schema.obj.compiled_options.get() {
+        if options.len() == 1 {
+          let (_, target_opt) = options.values().next().unwrap();
+          if let Some(target_id) = target_opt {
+            let mut bypass_schema = crate::database::schema::Schema::default();
+            bypass_schema.obj.type_ = Some(crate::database::object::SchemaTypeOrArray::Single(
+              target_id.clone(),
+            ));
+            let mut bypass_node = node.clone();
+            bypass_node.schema = std::sync::Arc::new(bypass_schema);
+            return self.compile_node(bypass_node);
+          }
+        }
       }
-
-      if all_targets.len() == 1 {
-        let mut bypass_schema = crate::database::schema::Schema::default();
-        bypass_schema.obj.type_ = Some(crate::database::schema::SchemaTypeOrArray::Single(all_targets[0].clone()));
-        let mut bypass_node = node.clone();
-        bypass_node.schema = std::sync::Arc::new(bypass_schema);
-        return self.compile_node(bypass_node);
-      }
-
-      all_targets.sort();
-      let mut family_schemas = Vec::new();
-      for variation in &all_targets {
-        let mut ref_schema = crate::database::schema::Schema::default();
-        ref_schema.obj.type_ = Some(crate::database::schema::SchemaTypeOrArray::Single(variation.clone()));
-        family_schemas.push(std::sync::Arc::new(ref_schema));
-      }
-
-      return self.compile_one_of(&family_schemas, node);
-    }
-
-    // Handle oneOf Polymorphism fallbacks for relations
-    if let Some(one_of) = &node.schema.obj.one_of {
-      return self.compile_one_of(one_of, node.clone());
+      return self.compile_one_of(node);
     }
 
     // Just an inline object definition?
@@ -179,17 +203,28 @@ impl<'a> Compiler<'a> {
   ) -> Result<(String, String), String> {
     let (table_aliases, from_clauses) = self.compile_from_clause(r#type);
 
-    // 2. Map properties and build jsonb_build_object args
-    let mut select_args = self.compile_select_clause(r#type, &table_aliases, node.clone())?;
+    let jsonb_obj_sql = if node.schema.obj.family.is_some() || node.schema.obj.one_of.is_some() {
+      let base_alias = table_aliases
+        .get(&r#type.name)
+        .cloned()
+        .unwrap_or_else(|| node.parent_alias.to_string());
 
-    // 2.5 Inject polymorphism directly into the query object
-    let mut poly_args = self.compile_polymorphism_select(r#type, &table_aliases, node.clone())?;
-    select_args.append(&mut poly_args);
+      let mut case_node = node.clone();
+      case_node.parent_alias = base_alias.clone();
+      let arc_aliases = std::sync::Arc::new(table_aliases.clone());
+      case_node.parent_type_aliases = Some(arc_aliases);
+      case_node.parent_type = Some(r#type);
 
-    let jsonb_obj_sql = if select_args.is_empty() {
-      "jsonb_build_object()".to_string()
+      let (case_sql, _) = self.compile_one_of(case_node)?;
+      case_sql
     } else {
-      format!("jsonb_build_object({})", select_args.join(", "))
+      let select_args = self.compile_select_clause(r#type, &table_aliases, node.clone())?;
+
+      if select_args.is_empty() {
+        "jsonb_build_object()".to_string()
+      } else {
+        format!("jsonb_build_object({})", select_args.join(", "))
+      }
     };
 
     // 3. Build WHERE clauses
@@ -218,90 +253,6 @@ impl<'a> Compiler<'a> {
     ))
   }
 
-  fn compile_polymorphism_select(
-    &mut self,
-    r#type: &'a crate::database::r#type::Type,
-    table_aliases: &std::collections::HashMap<String, String>,
-    node: Node<'a>,
-  ) -> Result<Vec<String>, String> {
-    let mut select_args = Vec::new();
-
-    if let Some(family_target) = node.schema.obj.family.as_ref() {
-      let family_prefix = family_target.rfind('.').map(|idx| &family_target[..idx]);
-
-      let mut all_targets = vec![family_target.clone()];
-      if let Some(descendants) = self.db.descendants.get(family_target) {
-        all_targets.extend(descendants.clone());
-      }
-
-      // Filter targets to EXACTLY match the family_target prefix
-      let mut final_targets = Vec::new();
-      for target in all_targets {
-        let target_prefix = target.rfind('.').map(|idx| &target[..idx]);
-        if target_prefix == family_prefix {
-          final_targets.push(target);
-        }
-      }
-
-      final_targets.sort();
-      final_targets.dedup();
-
-      if final_targets.len() == 1 {
-        let variation = &final_targets[0];
-        if let Some(target_schema) = self.db.schemas.get(variation) {
-          let mut bypass_node = node.clone();
-          bypass_node.schema = std::sync::Arc::new(target_schema.clone());
-
-          let mut bypassed_args = self.compile_select_clause(r#type, table_aliases, bypass_node)?;
-          select_args.append(&mut bypassed_args);
-        } else {
-          return Err(format!("Could not find schema for variation {}", variation));
-        }
-      } else {
-        let mut family_schemas = Vec::new();
-
-        for variation in &final_targets {
-          if let Some(target_schema) = self.db.schemas.get(variation) {
-            family_schemas.push(std::sync::Arc::new(target_schema.clone()));
-          } else {
-            return Err(format!(
-              "Could not find schema metadata for variation {}",
-              variation
-            ));
-          }
-        }
-
-        let base_alias = table_aliases
-          .get(&r#type.name)
-          .cloned()
-          .unwrap_or_else(|| node.parent_alias.to_string());
-        select_args.push(format!("'id', {}.id", base_alias));
-        let mut case_node = node.clone();
-        case_node.parent_alias = base_alias.clone();
-        let arc_aliases = std::sync::Arc::new(table_aliases.clone());
-        case_node.parent_type_aliases = Some(arc_aliases);
-
-        let (case_sql, _) = self.compile_one_of(&family_schemas, case_node)?;
-        select_args.push(format!("'type', {}", case_sql));
-      }
-    } else if let Some(one_of) = &node.schema.obj.one_of {
-      let base_alias = table_aliases
-        .get(&r#type.name)
-        .cloned()
-        .unwrap_or_else(|| node.parent_alias.to_string());
-      select_args.push(format!("'id', {}.id", base_alias));
-      let mut case_node = node.clone();
-      case_node.parent_alias = base_alias.clone();
-      let arc_aliases = std::sync::Arc::new(table_aliases.clone());
-      case_node.parent_type_aliases = Some(arc_aliases);
-
-      let (case_sql, _) = self.compile_one_of(one_of, case_node)?;
-      select_args.push(format!("'type', {}", case_sql));
-    }
-
-    Ok(select_args)
-  }
-
   fn compile_object(
     &mut self,
     props: &std::collections::BTreeMap<String, std::sync::Arc<crate::database::schema::Schema>>,
@@ -331,32 +282,96 @@ impl<'a> Compiler<'a> {
     Ok((combined, "object".to_string()))
   }
 
-  fn compile_one_of(
-    &mut self,
-    schemas: &[Arc<crate::database::schema::Schema>],
-    node: Node<'a>,
-  ) -> Result<(String, String), String> {
+  fn compile_one_of(&mut self, node: Node<'a>) -> Result<(String, String), String> {
     let mut case_statements = Vec::new();
+
+    let options = node
+      .schema
+      .obj
+      .compiled_options
+      .get()
+      .ok_or("Missing compiled options for polymorphism")?;
+    let disc = node
+      .schema
+      .obj
+      .compiled_discriminator
+      .get()
+      .ok_or("Missing compiled discriminator for polymorphism")?;
+
     let type_col = if let Some(prop) = &node.property_name {
-      format!("{}_type", prop)
+      format!("{}_{}", prop, disc)
     } else {
-      "type".to_string()
+      disc.to_string()
     };
 
-    for option_schema in schemas {
-      if let Some(base_type_name) = option_schema.obj.identifier() {
-        // Generate the nested SQL for this specific target type
-        let mut child_node = node.clone();
-        child_node.schema = std::sync::Arc::clone(option_schema);
-        let (val_sql, _) = self.compile_node(child_node)?;
+    for (disc_val, (idx_opt, target_id_opt)) in options {
+      if let Some(target_id) = target_id_opt {
+        if let Some(target_schema) = self.db.schemas.get(target_id) {
+          let mut child_node = node.clone();
+          child_node.schema = Arc::clone(target_schema);
+          child_node.schema_id = Some(target_id.clone());
+          child_node.is_polymorphic_branch = true;
 
-        case_statements.push(format!(
-          "WHEN {}.{} = '{}' THEN ({})",
-          node.parent_alias, type_col, base_type_name, val_sql
-        ));
+          let val_sql =
+            if disc == "kind" && node.parent_type.is_some() && node.parent_type_aliases.is_some() {
+              let aliases_arc = node.parent_type_aliases.as_ref().unwrap();
+              let aliases = aliases_arc.as_ref();
+              let p_type = node.parent_type.unwrap();
+
+              let select_args = self.compile_select_clause(p_type, aliases, child_node.clone())?;
+
+              if select_args.is_empty() {
+                "jsonb_build_object()".to_string()
+              } else {
+                format!("jsonb_build_object({})", select_args.join(", "))
+              }
+            } else {
+              let (sql, _) = self.compile_node(child_node)?;
+              sql
+            };
+
+          case_statements.push(format!(
+            "WHEN {}.{} = '{}' THEN ({})",
+            node.parent_alias, type_col, disc_val, val_sql
+          ));
+        }
+      } else if let Some(idx) = idx_opt {
+        if let Some(target_schema) = node
+          .schema
+          .obj
+          .one_of
+          .as_ref()
+          .and_then(|options| options.get(*idx))
+        {
+          let mut child_node = node.clone();
+          child_node.schema = Arc::clone(target_schema);
+          child_node.is_polymorphic_branch = true;
+
+          let val_sql =
+            if disc == "kind" && node.parent_type.is_some() && node.parent_type_aliases.is_some() {
+              let aliases_arc = node.parent_type_aliases.as_ref().unwrap();
+              let aliases = aliases_arc.as_ref();
+              let p_type = node.parent_type.unwrap();
+
+              let select_args = self.compile_select_clause(p_type, aliases, child_node.clone())?;
+
+              if select_args.is_empty() {
+                "jsonb_build_object()".to_string()
+              } else {
+                format!("jsonb_build_object({})", select_args.join(", "))
+              }
+            } else {
+              let (sql, _) = self.compile_node(child_node)?;
+              sql
+            };
+
+          case_statements.push(format!(
+            "WHEN {}.{} = '{}' THEN ({})",
+            node.parent_alias, type_col, disc_val, val_sql
+          ));
+        }
       }
     }
-
     if case_statements.is_empty() {
       return Ok(("NULL".to_string(), "string".to_string()));
     }
@@ -401,26 +416,28 @@ impl<'a> Compiler<'a> {
   ) -> Result<Vec<String>, String> {
     let mut select_args = Vec::new();
     let grouped_fields = r#type.grouped_fields.as_ref().and_then(|v| v.as_object());
-    let merged_props = node.schema.obj.compiled_properties.get().unwrap();
-    let mut sorted_keys: Vec<&String> = merged_props.keys().collect();
-    sorted_keys.sort();
-
-    for prop_key in sorted_keys {
-      let prop_schema = &merged_props[prop_key];
+    let default_props = std::collections::BTreeMap::new();
+    let merged_props = node
+      .schema
+      .obj
+      .compiled_properties
+      .get()
+      .unwrap_or(&default_props);
 
+    for (prop_key, prop_schema) in merged_props {
       let is_object_or_array = match &prop_schema.obj.type_ {
-        Some(crate::database::schema::SchemaTypeOrArray::Single(s)) => {
+        Some(crate::database::object::SchemaTypeOrArray::Single(s)) => {
           s == "object" || s == "array"
         }
-        Some(crate::database::schema::SchemaTypeOrArray::Multiple(v)) => {
+        Some(crate::database::object::SchemaTypeOrArray::Multiple(v)) => {
           v.contains(&"object".to_string()) || v.contains(&"array".to_string())
         }
         _ => false,
       };
 
       let is_custom_object_pointer = match &prop_schema.obj.type_ {
-        Some(crate::database::schema::SchemaTypeOrArray::Single(s)) => {
-          !crate::database::schema::is_primitive_type(s)
+        Some(crate::database::object::SchemaTypeOrArray::Single(s)) => {
+          !crate::database::object::is_primitive_type(s)
         }
         _ => false,
       };
@@ -457,6 +474,15 @@ impl<'a> Compiler<'a> {
         }
       }
 
+      if let Some(ft) = r#type.field_types.as_ref().and_then(|v| v.as_object()) {
+        if let Some(pg_type) = ft.get(prop_key).and_then(|v| v.as_str()) {
+          if pg_type == "json" || pg_type == "jsonb" {
+            select_args.push(format!("'{}', {}.{}", prop_key, owner_alias, prop_key));
+            continue;
+          }
+        }
+      }
+
       let child_node = Node {
         schema: std::sync::Arc::clone(prop_schema),
         parent_alias: owner_alias.clone(),
@@ -470,6 +496,8 @@ impl<'a> Compiler<'a> {
         } else {
           format!("{}/{}", node.ast_path, prop_key)
         },
+        is_polymorphic_branch: false,
+        schema_id: None,
       };
 
       let (val_sql, val_type) = self.compile_node(child_node)?;
@@ -509,6 +537,8 @@ impl<'a> Compiler<'a> {
 
     self.compile_filter_conditions(r#type, type_aliases, &node, &base_alias, &mut where_clauses);
     self.compile_polymorphic_bounds(r#type, type_aliases, &node, &mut where_clauses);
+
+    let start_len = where_clauses.len();
     self.compile_relation_conditions(
       r#type,
       type_aliases,
@@ -517,6 +547,14 @@ impl<'a> Compiler<'a> {
       &mut where_clauses,
     )?;
 
+    if node.is_polymorphic_branch && where_clauses.len() == start_len {
+      if let Some(parent_aliases) = &node.parent_type_aliases {
+        if let Some(outer_entity_alias) = parent_aliases.get("entity") {
+          where_clauses.push(format!("{}.id = {}.id", entity_alias, outer_entity_alias));
+        }
+      }
+    }
+
     Ok(where_clauses)
   }
 
@@ -541,8 +579,12 @@ impl<'a> Compiler<'a> {
                   .unwrap_or(family_target)
                   .to_string(),
               );
-            } else if let Some(lookup_key) = prop_schema.obj.identifier() {
-              bound_type_name = Some(lookup_key);
+            } else if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) =
+              &prop_schema.obj.type_
+            {
+              if !crate::database::object::is_primitive_type(t) {
+                bound_type_name = Some(t.split('.').next_back().unwrap_or(t).to_string());
+              }
             }
 
             if let Some(type_name) = bound_type_name {
@@ -675,8 +717,8 @@ impl<'a> Compiler<'a> {
       let param_index = i + 1;
       let p_val = format!("${}#>>'{{}}'", param_index);
 
-      if op == "$in" || op == "$nin" {
-        let sql_op = if op == "$in" { "IN" } else { "NOT IN" };
+      if op == "$of" || op == "$nof" {
+        let sql_op = if op == "$of" { "IN" } else { "NOT IN" };
         let subquery = format!(
           "(SELECT value{} FROM jsonb_array_elements_text(({})::jsonb))",
           cast, p_val

src/queryer/mod.rs

@@ -21,9 +21,9 @@ impl Queryer {
   pub fn query(
     &self,
     schema_id: &str,
-    filters: Option<&serde_json::Value>,
+    filter: Option<&serde_json::Value>,
   ) -> crate::drop::Drop {
-    let filters_map = filters.and_then(|f| f.as_object());
+    let filters_map = filter.and_then(|f| f.as_object());
 
     // 1. Process filters into structured $op keys and linear values
     let (filter_keys, args) = match self.parse_filter_entries(filters_map) {
@@ -33,9 +33,9 @@ impl Queryer {
           code: "FILTER_PARSE_FAILED".to_string(),
           message: msg.clone(),
           details: crate::drop::ErrorDetails {
-            path: "".to_string(), // filters apply to the root query
+            path: None, // filters apply to the root query
             cause: Some(msg),
-            context: filters.cloned(),
+            context: filter.cloned(),
             schema: Some(schema_id.to_string()),
           },
         }]);
@@ -138,7 +138,7 @@ impl Queryer {
         code: "QUERY_COMPILATION_FAILED".to_string(),
         message: e.clone(),
         details: crate::drop::ErrorDetails {
-          path: "".to_string(),
+          path: None,
           cause: Some(e),
           context: None,
           schema: Some(schema_id.to_string()),
@@ -165,7 +165,7 @@ impl Queryer {
         code: "QUERY_FAILED".to_string(),
         message: format!("Expected array from generic query, got: {:?}", other),
         details: crate::drop::ErrorDetails {
-          path: "".to_string(),
+          path: None,
           cause: Some(format!("Expected array, got {}", other)),
           context: Some(serde_json::json!([sql])),
           schema: Some(schema_id.to_string()),
@@ -175,7 +175,7 @@ impl Queryer {
         code: "QUERY_FAILED".to_string(),
         message: format!("SPI error in queryer: {}", e),
         details: crate::drop::ErrorDetails {
-          path: "".to_string(),
+          path: None,
           cause: Some(format!("SPI error in queryer: {}", e)),
           context: Some(serde_json::json!([sql])),
           schema: Some(schema_id.to_string()),

src/tests/fixtures.rs

@@ -533,6 +533,12 @@ fn test_unique_items_6_1() {
     crate::tests::runner::run_test_case(&path, 6, 1).unwrap();
 }
 
+#[test]
+fn test_filter_0_0() {
+    let path = format!("{}/fixtures/filter.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 0).unwrap();
+}
+
 #[test]
 fn test_min_items_0_0() {
     let path = format!("{}/fixtures/minItems.json", env!("CARGO_MANIFEST_DIR"));
@@ -1439,6 +1445,30 @@ fn test_queryer_0_10() {
     crate::tests::runner::run_test_case(&path, 0, 10).unwrap();
 }
 
+#[test]
+fn test_queryer_0_11() {
+    let path = format!("{}/fixtures/queryer.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 11).unwrap();
+}
+
+#[test]
+fn test_queryer_0_12() {
+    let path = format!("{}/fixtures/queryer.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 12).unwrap();
+}
+
+#[test]
+fn test_queryer_0_13() {
+    let path = format!("{}/fixtures/queryer.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 13).unwrap();
+}
+
+#[test]
+fn test_queryer_0_14() {
+    let path = format!("{}/fixtures/queryer.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 14).unwrap();
+}
+
 #[test]
 fn test_polymorphism_0_0() {
     let path = format!("{}/fixtures/polymorphism.json", env!("CARGO_MANIFEST_DIR"));
@@ -3546,9 +3576,9 @@ fn test_paths_1_0() {
 }
 
 #[test]
-fn test_paths_1_1() {
+fn test_paths_2_0() {
     let path = format!("{}/fixtures/paths.json", env!("CARGO_MANIFEST_DIR"));
-    crate::tests::runner::run_test_case(&path, 1, 1).unwrap();
+    crate::tests::runner::run_test_case(&path, 2, 0).unwrap();
 }
 
 #[test]
@@ -3689,6 +3719,18 @@ fn test_database_4_0() {
     crate::tests::runner::run_test_case(&path, 4, 0).unwrap();
 }
 
+#[test]
+fn test_database_5_0() {
+    let path = format!("{}/fixtures/database.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 5, 0).unwrap();
+}
+
+#[test]
+fn test_database_6_0() {
+    let path = format!("{}/fixtures/database.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 6, 0).unwrap();
+}
+
 #[test]
 fn test_cases_0_0() {
     let path = format!("{}/fixtures/cases.json", env!("CARGO_MANIFEST_DIR"));
@@ -7728,21 +7770,9 @@ fn test_object_types_2_1() {
 }
 
 #[test]
-fn test_object_types_3_0() {
+fn test_object_types_2_2() {
     let path = format!("{}/fixtures/objectTypes.json", env!("CARGO_MANIFEST_DIR"));
-    crate::tests::runner::run_test_case(&path, 3, 0).unwrap();
-}
-
-#[test]
-fn test_object_types_3_1() {
-    let path = format!("{}/fixtures/objectTypes.json", env!("CARGO_MANIFEST_DIR"));
-    crate::tests::runner::run_test_case(&path, 3, 1).unwrap();
-}
-
-#[test]
-fn test_object_types_3_2() {
-    let path = format!("{}/fixtures/objectTypes.json", env!("CARGO_MANIFEST_DIR"));
-    crate::tests::runner::run_test_case(&path, 3, 2).unwrap();
+    crate::tests::runner::run_test_case(&path, 2, 2).unwrap();
 }
 
 #[test]
@@ -8098,3 +8128,15 @@ fn test_merger_0_12() {
     let path = format!("{}/fixtures/merger.json", env!("CARGO_MANIFEST_DIR"));
     crate::tests::runner::run_test_case(&path, 0, 12).unwrap();
 }
+
+#[test]
+fn test_merger_0_13() {
+    let path = format!("{}/fixtures/merger.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 13).unwrap();
+}
+
+#[test]
+fn test_merger_0_14() {
+    let path = format!("{}/fixtures/merger.json", env!("CARGO_MANIFEST_DIR"));
+    crate::tests::runner::run_test_case(&path, 0, 14).unwrap();
+}

src/tests/mod.rs

@@ -18,7 +18,7 @@ fn test_library_api() {
         "errors": [{
             "code": "ENGINE_NOT_INITIALIZED",
             "message": "JSPG extension has not been initialized via jspg_setup",
-            "details": { "path": "" }
+            "details": {}
         }]
     })
   );
@@ -44,27 +44,30 @@ fn test_library_api() {
               "name": "source_schema",
               "variations": ["source_schema"],
               "hierarchy": ["source_schema", "entity"],
-              "schemas": [{
-                  "$id": "source_schema",
-                  "type": "object",
-                  "properties": {
-                      "name": { "type": "string" },
-                      "target": { "type": "target_schema" }
-                  },
-                  "required": ["name"]
-              }]
+              "schemas": {
+                  "source_schema": {
+                      "type": "object",
+                      "properties": {
+                          "type": { "type": "string" },
+                          "name": { "type": "string" },
+                          "target": { "type": "target_schema" }
+                      },
+                      "required": ["name"]
+                  }
+              }
           },
           {
               "name": "target_schema",
               "variations": ["target_schema"],
               "hierarchy": ["target_schema", "entity"],
-              "schemas": [{
-                  "$id": "target_schema",
-                  "type": "object",
-                  "properties": {
-                      "value": { "type": "number" }
+              "schemas": {
+                  "target_schema": {
+                      "type": "object",
+                      "properties": {
+                          "value": { "type": "number" }
+                      }
                   }
-              }]
+              }
           }
       ]
   });
@@ -78,39 +81,116 @@ fn test_library_api() {
     })
   );
 
-  // 3. Validate jspg_schemas
-  let schemas_drop = jspg_schemas();
+  // 3. Validate jspg_database mapping natively!
+  let db_drop = jspg_database();
   assert_eq!(
-    schemas_drop.0,
+    db_drop.0,
     json!({
         "type": "drop",
         "response": {
-            "source_schema": {
-                "$id": "source_schema",
-                "type": "object",
-                "properties": {
-                    "name": { "type": "string" },
-                    "target": {
-                        "type": "target_schema",
-                        "compiledProperties": ["value"]
-                    }
-                },
-                "required": ["name"],
-                "compiledProperties": ["name", "target"],
-                "compiledEdges": {
-                    "target": {
-                        "constraint": "fk_test_target",
-                        "forward": true
-                    }
+            "enums": {},
+            "puncs": {},
+            "relations": {
+                "fk_test_target": {
+                    "id": "11111111-1111-1111-1111-111111111111",
+                    "type": "relation",
+                    "constraint": "fk_test_target",
+                    "destination_columns": ["id"],
+                    "destination_type": "target_schema",
+                    "prefix": "target",
+                    "source_columns": ["target_id"],
+                    "source_type": "source_schema"
                 }
             },
-            "target_schema": {
-                "$id": "target_schema",
-                "type": "object",
-                "properties": {
-                    "value": { "type": "number" }
+            "types": {
+                "source_schema": {
+                    "default_fields": [],
+                    "field_types": null,
+                    "fields": [],
+                    "grouped_fields": null,
+                    "hierarchy": ["source_schema", "entity"],
+                    "historical": false,
+                    "id": "",
+                    "longevity": null,
+                    "lookup_fields": [],
+                    "module": "",
+                    "name": "source_schema",
+                    "notify": false,
+                    "null_fields": [],
+                    "ownable": false,
+                    "relationship": false,
+                    "schemas": {
+                        "source_schema": {
+                            "compiledEdges": {
+                                "target": {
+                                    "constraint": "fk_test_target",
+                                    "forward": true
+                                }
+                            },
+                            "compiledPropertyNames": ["name", "target", "type"],
+                            "properties": {
+                                "name": { "type": "string" },
+                                "target": {
+                                    "compiledPropertyNames": ["value"],
+                                    "type": "target_schema"
+                                },
+                                "type": { "type": "string" }
+                            },
+                            "required": ["name"],
+                            "type": "object"
+                        },
+                        "source_schema.filter": {
+                            "compiledPropertyNames": ["name", "target", "type"],
+                            "properties": {
+                                "name": { "type": ["string.condition", "null"] },
+                                "target": { "type": ["target_schema.filter", "null"] },
+                                "type": { "type": ["string.condition", "null"] }
+                            },
+                            "type": "filter"
+                        }
+                    },
+                    "sensitive": false,
+                    "source": "",
+                    "type": "",
+                    "variations": ["source_schema"]
                 },
-                "compiledProperties": ["value"]
+                "target_schema": {
+                    "default_fields": [],
+                    "field_types": null,
+                    "fields": [],
+                    "grouped_fields": null,
+                    "hierarchy": ["target_schema", "entity"],
+                    "historical": false,
+                    "id": "",
+                    "longevity": null,
+                    "lookup_fields": [],
+                    "module": "",
+                    "name": "target_schema",
+                    "notify": false,
+                    "null_fields": [],
+                    "ownable": false,
+                    "relationship": false,
+                    "schemas": {
+                        "target_schema": {
+                            "compiledPropertyNames": ["value"],
+                            "properties": {
+                                "value": { "type": "number" }
+                            },
+                            "type": "object"
+                        },
+                        "target_schema.filter": {
+                            "compiledPropertyNames": ["value"],
+                            "properties": {
+                                "value": { "type": ["number.condition", "null"] }
+                            },
+                            "type": "filter"
+                        }
+                    },
+                    "sensitive": false,
+                    "source": "",
+                    "type": "",
+                    "variations": ["target_schema"]
+                }
             }
         }
     })

src/tests/runner.rs

@@ -86,7 +86,7 @@ pub fn run_test_case(path: &str, suite_idx: usize, case_idx: usize) -> Result<()
         let error_messages: Vec<String> = drop
           .errors
           .iter()
-          .map(|e| format!("Error {} at path {}: {}", e.code, e.details.path, e.message))
+          .map(|e| format!("Error {} at path {}: {}", e.code, e.details.path.as_deref().unwrap_or("/"), e.message))
           .collect();
         failures.push(format!(
           "[{}] Cannot run '{}' test '{}': System Setup Compilation structurally failed:\n{}",

src/tests/types/case.rs

@@ -17,7 +17,7 @@ pub struct Case {
 
   // For Query
   #[serde(default)]
-  pub filters: Option<serde_json::Value>,
+  pub filter: Option<serde_json::Value>,
 
   // For Merge & Validate
   #[serde(default)]
@@ -49,7 +49,13 @@ impl Case {
       Err(d) => d.clone(),
     };
 
-    expect.assert_drop(&result)
+    expect.assert_drop(&result)?;
+
+    if let Ok(db) = db_res {
+      expect.assert_schemas(db)?;
+    }
+
+    Ok(())
   }
 
   pub fn run_validate(&self, db: Arc<Database>) -> Result<(), String> {
@@ -116,7 +122,7 @@ impl Case {
     use crate::queryer::Queryer;
     let queryer = Queryer::new(db.clone());
 
-    let result = queryer.query(&self.schema_id, self.filters.as_ref());
+    let result = queryer.query(&self.schema_id, self.filter.as_ref());
 
     let return_val = if let Some(expect) = &self.expect {
       if let Err(e) = expect.assert_drop(&result) {

src/tests/types/expect/mod.rs

@@ -1,6 +1,7 @@
 pub mod pattern;
 pub mod sql;
 pub mod drop;
+pub mod schema;
 
 use serde::Deserialize;
 
@@ -18,4 +19,6 @@ pub struct Expect {
   pub errors: Option<Vec<serde_json::Value>>,
   #[serde(default)]
   pub sql: Option<Vec<SqlExpectation>>,
+  #[serde(default)]
+  pub schemas: Option<std::collections::HashMap<String, serde_json::Value>>,
 }

src/tests/types/expect/schema.rs

@@ -0,0 +1,44 @@
+use super::Expect;
+use std::sync::Arc;
+
+impl Expect {
+  pub fn assert_schemas(&self, db: &Arc<crate::database::Database>) -> Result<(), String> {
+    if let Some(expected_map) = &self.schemas {
+      // Collect actual schemas and sort
+      let mut actual: Vec<String> = db.schemas.keys().cloned().collect();
+      actual.sort();
+
+      // Collect expected schemas and sort
+      let mut expected: Vec<String> = expected_map.keys().cloned().collect();
+      expected.sort();
+
+      if actual != expected {
+        return Err(format!(
+          "Schema Promotion Mismatch!\nExpected Schemas ({}):\n{:#?}\n\nActual Promoted Schemas ({}):\n{:#?}",
+          expected.len(),
+          expected,
+          actual.len(),
+          actual
+        ));
+      }
+
+      for (key, expected_val) in expected_map {
+         if expected_val.is_object() && expected_val.as_object().unwrap().is_empty() {
+            continue; // A `{}` means we just wanted to test it was collected/promoted, skip deep match
+         }
+         let actual_ast = db.schemas.get(key).unwrap();
+         let actual_val = serde_json::to_value(actual_ast).unwrap();
+         
+         if actual_val != *expected_val {
+            return Err(format!(
+              "Detailed Schema Match Failure for '{}'!\n\nExpected:\n{}\n\nActual:\n{}",
+              key,
+              serde_json::to_string_pretty(expected_val).unwrap(),
+              serde_json::to_string_pretty(&actual_val).unwrap()
+            ));
+         }
+      }
+    }
+    Ok(())
+  }
+}

src/validator/mod.rs

@@ -68,7 +68,7 @@ impl Validator {
                 code: e.code,
                 message: e.message,
                 details: crate::drop::ErrorDetails {
-                  path: e.path,
+                  path: Some(e.path),
                   cause: None,
                   context: None,
                   schema: None,
@@ -82,7 +82,7 @@ impl Validator {
           code: e.code,
           message: e.message,
           details: crate::drop::ErrorDetails {
-            path: e.path,
+            path: Some(e.path),
             cause: None,
             context: None,
             schema: None,
@@ -94,7 +94,7 @@ impl Validator {
         code: "SCHEMA_NOT_FOUND".to_string(),
         message: format!("Schema {} not found", schema_id),
         details: crate::drop::ErrorDetails {
-          path: "/".to_string(),
+          path: Some("/".to_string()),
           cause: None,
           context: None,
           schema: None,

src/validator/rules/array.rs

@@ -93,9 +93,12 @@ impl<'a> ValidationContext<'a> {
           if i < len {
             if let Some(child_instance) = arr.get(i) {
               let mut item_path = self.join_path(&i.to_string());
-              if let Some(obj) = child_instance.as_object() {
-                if let Some(id_str) = obj.get("id").and_then(|v| v.as_str()) {
-                  item_path = self.join_path(id_str);
+              let is_topological = sub_schema.obj.requires_uuid_path(self.db);
+              if is_topological {
+                if let Some(obj) = child_instance.as_object() {
+                  if let Some(id_str) = obj.get("id").and_then(|v| v.as_str()) {
+                    item_path = self.join_path(id_str);
+                  }
                 }
               }
               let derived = self.derive(
@@ -116,12 +119,15 @@ impl<'a> ValidationContext<'a> {
       }
 
       if let Some(ref items_schema) = self.schema.items {
+        let is_topological = items_schema.obj.requires_uuid_path(self.db);
         for i in validation_index..len {
           if let Some(child_instance) = arr.get(i) {
             let mut item_path = self.join_path(&i.to_string());
-            if let Some(obj) = child_instance.as_object() {
-              if let Some(id_str) = obj.get("id").and_then(|v| v.as_str()) {
-                item_path = self.join_path(id_str);
+            if is_topological {
+              if let Some(obj) = child_instance.as_object() {
+                if let Some(id_str) = obj.get("id").and_then(|v| v.as_str()) {
+                  item_path = self.join_path(id_str);
+                }
               }
             }
             let derived = self.derive(

src/validator/rules/core.rs

@@ -13,7 +13,7 @@ impl<'a> ValidationContext<'a> {
 
     if let Some(ref type_) = self.schema.type_ {
       match type_ {
-        crate::database::schema::SchemaTypeOrArray::Single(t) => {
+        crate::database::object::SchemaTypeOrArray::Single(t) => {
           if !Validator::check_type(t, current) {
             result.errors.push(ValidationError {
               code: "INVALID_TYPE".to_string(),
@@ -22,7 +22,7 @@ impl<'a> ValidationContext<'a> {
             });
           }
         }
-        crate::database::schema::SchemaTypeOrArray::Multiple(types) => {
+        crate::database::object::SchemaTypeOrArray::Multiple(types) => {
           let mut valid = false;
           for t in types {
             if Validator::check_type(t, current) {

src/validator/rules/extensible.rs

@@ -24,9 +24,6 @@ impl<'a> ValidationContext<'a> {
 
     if let Some(obj) = self.instance.as_object() {
       for key in obj.keys() {
-        if key == "type" || key == "kind" {
-          continue; // Reserved keywords implicitly allowed
-        }
         if !result.evaluated_keys.contains(key) && !self.overrides.contains(key) {
           result.errors.push(ValidationError {
             code: "STRICT_PROPERTY_VIOLATION".to_string(),

src/validator/rules/format.rs

@@ -10,7 +10,7 @@ impl<'a> ValidationContext<'a> {
     let current = self.instance;
     if let Some(compiled_fmt) = self.schema.compiled_format.get() {
       match compiled_fmt {
-        crate::database::schema::CompiledFormat::Func(f) => {
+        crate::database::object::CompiledFormat::Func(f) => {
           let should = if let Some(s) = current.as_str() {
             !s.is_empty()
           } else {
@@ -24,7 +24,7 @@ impl<'a> ValidationContext<'a> {
             });
           }
         }
-        crate::database::schema::CompiledFormat::Regex(re) => {
+        crate::database::object::CompiledFormat::Regex(re) => {
           if let Some(s) = current.as_str()
             && !re.is_match(s)
           {

src/validator/rules/object.rs

@@ -13,10 +13,17 @@ impl<'a> ValidationContext<'a> {
   ) -> Result<bool, ValidationError> {
     let current = self.instance;
     if let Some(obj) = current.as_object() {
+      let mut schema_identifier = None;
+      if let Some(crate::database::object::SchemaTypeOrArray::Single(t)) = &self.schema.type_ {
+        if !crate::database::object::is_primitive_type(t) {
+          schema_identifier = Some(t.clone());
+        }
+      }
+
       // Entity implicit type validation
-      if let Some(schema_identifier) = self.schema.identifier() {
+      if let Some(ref schema_identifier_str) = schema_identifier {
         // We decompose identity string routing inherently
-        let expected_type = schema_identifier.split('.').last().unwrap_or(&schema_identifier);
+        let expected_type = schema_identifier_str.split('.').last().unwrap_or(schema_identifier_str);
         
         // Check if the identifier represents a registered global database entity boundary mathematically
         if let Some(type_def) = self.db.types.get(expected_type) {
@@ -46,15 +53,20 @@ impl<'a> ValidationContext<'a> {
           }
 
           // If the target mathematically declares a horizontal structural STI variation natively
-          if schema_identifier.contains('.') {
-            if obj.get("kind").is_none() {
-              result.errors.push(ValidationError {
-                code: "MISSING_KIND".to_string(),
-                message: "Schema mechanically requires horizontal kind discrimination".to_string(),
-                path: self.path.clone(),
-              });
-            } else {
-              result.evaluated_keys.insert("kind".to_string());
+          if schema_identifier_str.contains('.') {
+            let requires_kind = self.schema.compiled_properties.get()
+                .map_or(false, |p| p.contains_key("kind"));
+            
+            if requires_kind {
+              if obj.get("kind").is_none() {
+                result.errors.push(ValidationError {
+                  code: "MISSING_KIND".to_string(),
+                  message: "Schema mechanically requires horizontal kind discrimination".to_string(),
+                  path: self.path.clone(),
+                });
+              } else {
+                result.evaluated_keys.insert("kind".to_string());
+              }
             }
           }
         } else {
@@ -69,7 +81,7 @@ impl<'a> ValidationContext<'a> {
              }
           }
           if let Some(kind_val) = obj.get("kind") {
-             if let Some((kind_str, _)) = schema_identifier.rsplit_once('.') {
+             if let Some((kind_str, _)) = schema_identifier_str.rsplit_once('.') {
                 if let Some(actual_kind) = kind_val.as_str() {
                    if actual_kind == kind_str {
                       result.evaluated_keys.insert("kind".to_string());
@@ -124,7 +136,7 @@ impl<'a> ValidationContext<'a> {
         for (prop, dep) in deps {
           if obj.contains_key(prop) {
             match dep {
-              crate::database::schema::Dependency::Props(required_props) => {
+              crate::database::object::Dependency::Props(required_props) => {
                 for req_prop in required_props {
                   if !obj.contains_key(req_prop) {
                     result.errors.push(ValidationError {
@@ -135,7 +147,7 @@ impl<'a> ValidationContext<'a> {
                   }
                 }
               }
-              crate::database::schema::Dependency::Schema(dep_schema) => {
+              crate::database::object::Dependency::Schema(dep_schema) => {
                 let derived = self.derive_for_schema(dep_schema, false);
                 let dep_res = derived.validate()?;
                 result.evaluated_keys.extend(dep_res.evaluated_keys.clone());
@@ -155,7 +167,7 @@ impl<'a> ValidationContext<'a> {
           if let Some(child_instance) = obj.get(key) {
             let new_path = self.join_path(key);
             let is_ref = match &sub_schema.type_ {
-              Some(crate::database::schema::SchemaTypeOrArray::Single(t)) => !crate::database::schema::is_primitive_type(t),
+              Some(crate::database::object::SchemaTypeOrArray::Single(t)) => !crate::database::object::is_primitive_type(t),
               _ => false,
             };
             let next_extensible = if is_ref { false } else { self.extensible };
@@ -184,7 +196,7 @@ impl<'a> ValidationContext<'a> {
             if compiled_re.0.is_match(key) {
               let new_path = self.join_path(key);
               let is_ref = match &sub_schema.type_ {
-                Some(crate::database::schema::SchemaTypeOrArray::Single(t)) => !crate::database::schema::is_primitive_type(t),
+                Some(crate::database::object::SchemaTypeOrArray::Single(t)) => !crate::database::object::is_primitive_type(t),
                 _ => false,
               };
               let next_extensible = if is_ref { false } else { self.extensible };
@@ -226,7 +238,7 @@ impl<'a> ValidationContext<'a> {
           if !locally_matched {
             let new_path = self.join_path(key);
             let is_ref = match &additional_schema.type_ {
-              Some(crate::database::schema::SchemaTypeOrArray::Single(t)) => !crate::database::schema::is_primitive_type(t),
+              Some(crate::database::object::SchemaTypeOrArray::Single(t)) => !crate::database::object::is_primitive_type(t),
               _ => false,
             };
             let next_extensible = if is_ref { false } else { self.extensible };

src/validator/rules/polymorphism.rs

@@ -1,4 +1,3 @@
-use crate::database::schema::Schema;
 use crate::validator::context::ValidationContext;
 use crate::validator::error::ValidationError;
 use crate::validator::result::ValidationResult;
@@ -22,283 +21,160 @@ impl<'a> ValidationContext<'a> {
       if conflicts {
         result.errors.push(ValidationError {
           code: "INVALID_SCHEMA".to_string(),
-          message: "$family must be used exclusively without other constraints".to_string(),
+          message: "family must be used exclusively without other constraints".to_string(),
           path: self.path.to_string(),
         });
         return Ok(false);
       }
     }
 
-    if let Some(family_target) = &self.schema.family {
-      if let Some(descendants) = self.db.descendants.get(family_target) {
-        let mut candidates = Vec::new();
-        
-        // Add the target base schema itself
-        if let Some(base_schema) = self.db.schemas.get(family_target) {
-            candidates.push(base_schema);
-        }
-
-        // Add all descendants
-        for child_id in descendants {
-          if let Some(child_schema) = self.db.schemas.get(child_id) {
-            candidates.push(child_schema);
-          }
-        }
-        
-        // Use prefix from family string (e.g. `light.`)
-        let prefix = family_target
-          .rsplit_once('.')
-          .map(|(p, _)| format!("{}.", p))
-          .unwrap_or_default();
-
-        if !self.validate_polymorph(&candidates, Some(&prefix), result)? {
-          return Ok(false);
-        }
+    if self.schema.family.is_some() {
+      if let Some(options) = self.schema.compiled_options.get() {
+        return self.execute_polymorph(options, result);
+      } else {
+        result.errors.push(ValidationError {
+          code: "UNCOMPILED_FAMILY".to_string(),
+          message: "Encountered family block that could not be mapped to deterministic options during db schema compilation.".to_string(),
+          path: self.path.to_string(),
+        });
+        return Ok(false);
       }
     }
 
     Ok(true)
   }
-  
+
   pub(crate) fn validate_one_of(
     &self,
     result: &mut ValidationResult,
   ) -> Result<bool, ValidationError> {
-    if let Some(ref one_of) = self.schema.one_of {
-      let mut candidates = Vec::new();
-      for schema in one_of {
-        candidates.push(schema.as_ref());
-      }
-      if !self.validate_polymorph(&candidates, None, result)? {
+    if self.schema.one_of.is_some() {
+      if let Some(options) = self.schema.compiled_options.get() {
+        return self.execute_polymorph(options, result);
+      } else {
+        result.errors.push(ValidationError {
+            code: "UNCOMPILED_ONEOF".to_string(),
+            message: "Encountered oneOf block that could not be mapped to deterministic compiled options natively.".to_string(),
+            path: self.path.to_string(),
+         });
         return Ok(false);
       }
     }
     Ok(true)
   }
 
-  pub(crate) fn validate_polymorph(
+  pub(crate) fn execute_polymorph(
     &self,
-    candidates: &[&Schema],
-    family_prefix: Option<&str>,
+    options: &std::collections::BTreeMap<String, (Option<usize>, Option<String>)>,
     result: &mut ValidationResult,
   ) -> Result<bool, ValidationError> {
-    let mut passed_candidates: Vec<(Option<String>, ValidationResult)> = Vec::new();
-    let mut failed_candidates: Vec<ValidationResult> = Vec::new();
-
     // 1. O(1) Fast-Path Router & Extractor
-    let instance_type = self.instance.as_object().and_then(|o| o.get("type")).and_then(|t| t.as_str());
-    let instance_kind = self.instance.as_object().and_then(|o| o.get("kind")).and_then(|k| k.as_str());
-
-    let mut viable_candidates = Vec::new();
-
-    for sub in candidates {
-      let _child_id = sub.identifier().unwrap_or_default();
-      let mut can_match = true;
-
-      if let Some(t) = instance_type {
-        // Fast Path 1: Pure Ad-Hoc Match (schema identifier == type)
-        // If it matches exactly, it's our golden candidate. Make all others non-viable manually?
-        // Wait, we loop through all and filter down. If exact match is found, we should ideally break and use ONLY that.
-        // Let's implement the logic safely.
-        
-        let mut exact_match_found = false;
-        
-        if let Some(schema_id) = &sub.id {
-            // Compute Vertical Exact Target (e.g. "person" or "light.person")
-            let exact_target = if let Some(prefix) = family_prefix {
-                format!("{}{}", prefix, t)
-            } else {
-                t.to_string()
-            };
-
-            // Fast Path 1 & 2: Vertical Exact Match
-            if schema_id == &exact_target {
-                if instance_kind.is_none() {
-                    exact_match_found = true;
-                }
-            }
-            
-            // Fast Path 3: Horizontal Sibling Match (kind + . + type)
-            if let Some(k) = instance_kind {
-                let sibling_target = format!("{}.{}", k, t);
-                if schema_id == &sibling_target {
-                    exact_match_found = true;
-                }
-            }
-        }
-
-        if exact_match_found {
-            // We found an exact literal structural identity match!
-            // Wipe the existing viable_candidates and only yield this guy!
-            viable_candidates.clear();
-            viable_candidates.push(*sub);
-            break; 
-        }
-
-        // Fast Path 4: Vertical Inheritance Fallback (Physical DB constraint)
-        if let Some(crate::database::schema::SchemaTypeOrArray::Single(t_ptr)) = &sub.type_ {
-          if !crate::database::schema::is_primitive_type(t_ptr) {
-            if let Some(base_type) = t_ptr.split('.').last() {
-              if let Some(type_def) = self.db.types.get(base_type) {
-                if !type_def.variations.contains(&t.to_string()) {
-                  can_match = false;
-                }
-              } else {
-                if t_ptr != t {
-                  can_match = false;
-                }
-              }
-            }
+    let instance_val = if let Some(disc) = self.schema.compiled_discriminator.get() {
+      let val = self
+        .instance
+        .as_object()
+        .and_then(|o| o.get(disc))
+        .and_then(|t| t.as_str());
+      if val.is_some() {
+        result.evaluated_keys.insert(disc.to_string());
+      }
+      val.map(|s| s.to_string())
+    } else {
+      match self.instance {
+        serde_json::Value::Null => Some("null".to_string()),
+        serde_json::Value::Bool(_) => Some("boolean".to_string()),
+        serde_json::Value::Number(n) => {
+          if n.is_i64() || n.is_u64() {
+            Some("integer".to_string())
+          } else {
+            Some("number".to_string())
           }
         }
+        serde_json::Value::String(_) => Some("string".to_string()),
+        serde_json::Value::Array(_) => Some("array".to_string()),
+        serde_json::Value::Object(_) => Some("object".to_string()),
+      }
+    };
 
-        // Fast Path 5: Explicit Schema JSON `const` values check
-        if can_match {
-          if let Some(props) = &sub.properties {
-            if let Some(type_prop) = props.get("type") {
-              if let Some(const_val) = &type_prop.const_ {
-                if let Some(const_str) = const_val.as_str() {
-                  if const_str != t {
-                    can_match = false;
-                  }
-                }
-              }
-            }
+    if let Some(val) = instance_val {
+      if let Some((idx_opt, target_id_opt)) = options.get(&val) {
+        if let Some(target_id) = target_id_opt {
+          if let Some(target_schema) = self.db.schemas.get(target_id) {
+            let derived = self.derive_for_schema(target_schema.as_ref(), false);
+            let sub_res = derived.validate()?;
+            let is_valid = sub_res.is_valid();
+            result.merge(sub_res);
+            return Ok(is_valid);
+          } else {
+            result.errors.push(ValidationError {
+              code: "MISSING_COMPILED_SCHEMA".to_string(),
+              message: format!(
+                "Polymorphic router target '{}' does not exist in the database schemas map",
+                target_id
+              ),
+              path: self.path.to_string(),
+            });
+            return Ok(false);
           }
-        }
-      }
-
-      if can_match {
-        viable_candidates.push(*sub);
-      }
-    }
-
-    println!("DEBUG VIABLE: {:?}", viable_candidates.iter().map(|s| s.id.clone()).collect::<Vec<_>>());
-    // 2. Evaluate Viable Candidates
-    // 2. Evaluate Viable Candidates
-    // Composition validation is natively handled directly via type compilation.
-    // The deprecated allOf JSON structure is no longer supported nor traversed.
-    for sub in viable_candidates.clone() {
-      let derived = self.derive_for_schema(sub, false);
-      let sub_res = derived.validate()?; 
-      if sub_res.is_valid() {
-        passed_candidates.push((sub.id.clone(), sub_res));
-      } else {
-        failed_candidates.push(sub_res);
-      }
-    }
-    for f in &failed_candidates {
-        println!("  - Failed candidate errors: {:?}", f.errors.iter().map(|e| e.code.clone()).collect::<Vec<_>>());
-    }
-
-    if passed_candidates.len() == 1 {
-      result.merge(passed_candidates.pop().unwrap().1);
-    } else if passed_candidates.is_empty() {
-      // 3. Discriminator Pathing (Failure Analytics)
-      let type_path = self.join_path("type");
-
-      if instance_type.is_some() {
-        // Filter to candidates that didn't explicitly throw a CONST violation on `type`
-        let mut genuinely_failed = Vec::new();
-        for res in &failed_candidates {
-          let rejected_type = res.errors.iter().any(|e| {
-            (e.code == "CONST_VIOLATED" || e.code == "ENUM_VIOLATED") && e.path == type_path
-          });
-          if !rejected_type {
-            genuinely_failed.push(res.clone());
+        } else if let Some(idx) = idx_opt {
+          if let Some(target_schema) = self
+            .schema
+            .one_of
+            .as_ref()
+            .and_then(|options| options.get(*idx))
+          {
+            let derived = self.derive_for_schema(target_schema.as_ref(), false);
+            let sub_res = derived.validate()?;
+            let is_valid = sub_res.is_valid();
+            result.merge(sub_res);
+            return Ok(is_valid);
+          } else {
+            result.errors.push(ValidationError {
+              code: "MISSING_COMPILED_SCHEMA".to_string(),
+              message: format!(
+                "Polymorphic index target '{}' does not exist in the local oneOf array",
+                idx
+              ),
+              path: self.path.to_string(),
+            });
+            return Ok(false);
           }
-        }
-
-        println!("DEBUG genuinely_failed len: {}", genuinely_failed.len());
-
-        if genuinely_failed.len() == 1 {
-          // Golden Type Match (1 candidate was structurally possible but failed property validation)
-          let sub_res = genuinely_failed.pop().unwrap();
-          result.errors.extend(sub_res.errors);
-          result.evaluated_keys.extend(sub_res.evaluated_keys);
-          return Ok(false);
         } else {
-          // Pure Ad-Hoc Union
-          result.errors.push(ValidationError {
-            code: if self.schema.family.is_some() { "NO_FAMILY_MATCH".to_string() } else { "NO_ONEOF_MATCH".to_string() },
-            message: "Payload matches none of the required candidate sub-schemas".to_string(),
-            path: self.path.to_string(),
-          });
-
-          for sub_res in &failed_candidates {
-            result.evaluated_keys.extend(sub_res.evaluated_keys.clone());
-          }
-          println!("DEBUG ELSE NO_FAMILY_MATCH RUNNING. Genuinely Failed len: {}", genuinely_failed.len());
-          if viable_candidates.is_empty() {
-            if let Some(obj) = self.instance.as_object() {
-              result.evaluated_keys.extend(obj.keys().cloned());
-            }
-          }
-          for sub_res in genuinely_failed {
-            for e in sub_res.errors {
-              if !result.errors.iter().any(|existing| existing.code == e.code && existing.path == e.path) {
-                result.errors.push(e);
-              }
-            }
-          }
           return Ok(false);
         }
       } else {
-        // Instance missing type
-        // Instance missing type
-        let expects_type = viable_candidates.iter().any(|c| {
-          c.compiled_property_names.get().map_or(false, |props| props.contains(&"type".to_string()))
+        let disc_msg = if let Some(d) = self.schema.compiled_discriminator.get() {
+          format!("discriminator {}='{}'", d, val)
+        } else {
+          format!("structural JSON base primitive '{}'", val)
+        };
+        result.errors.push(ValidationError {
+          code: if self.schema.family.is_some() {
+            "NO_FAMILY_MATCH".to_string()
+          } else {
+            "NO_ONEOF_MATCH".to_string()
+          },
+          message: format!(
+            "Payload matched no candidate boundaries based on its {}",
+            disc_msg
+          ),
+          path: self.path.to_string(),
         });
-
-        if expects_type {
-          result.errors.push(ValidationError {
-            code: "MISSING_TYPE".to_string(),
-            message: "Missing type discriminator. Unable to resolve polymorphic boundaries".to_string(),
-            path: self.path.to_string(),
-          });
-
-          for sub_res in failed_candidates {
-            result.evaluated_keys.extend(sub_res.evaluated_keys);
-          }
-          return Ok(false);
-        } else {
-          // Pure Ad-Hoc Union
-          result.errors.push(ValidationError {
-            code: if self.schema.family.is_some() { "NO_FAMILY_MATCH".to_string() } else { "NO_ONEOF_MATCH".to_string() },
-            message: "Payload matches none of the required candidate sub-schemas".to_string(),
-            path: self.path.to_string(),
-          });
-
-          if let Some(first) = failed_candidates.first() {
-            let mut shared_errors = first.errors.clone();
-            for sub_res in failed_candidates.iter().skip(1) {
-              shared_errors.retain(|e1| {
-                 sub_res.errors.iter().any(|e2| e1.code == e2.code && e1.path == e2.path)
-              });
-            }
-            for e in shared_errors {
-              if !result.errors.iter().any(|existing| existing.code == e.code && existing.path == e.path) {
-                result.errors.push(e);
-              }
-            }
-          }
-
-          for sub_res in failed_candidates {
-            result.evaluated_keys.extend(sub_res.evaluated_keys);
-          }
-          return Ok(false);
-        }
-
+        return Ok(false);
       }
     } else {
-      result.errors.push(ValidationError {
-        code: "AMBIGUOUS_POLYMORPHIC_MATCH".to_string(),
-        message: "Matches multiple polymorphic candidates inextricably".to_string(),
-        path: self.path.to_string(),
-      });
+      if let Some(d) = self.schema.compiled_discriminator.get() {
+        result.errors.push(ValidationError {
+          code: "MISSING_TYPE".to_string(),
+          message: format!(
+            "Missing explicit '{}' discriminator. Unable to resolve polymorphic boundaries",
+            d
+          ),
+          path: self.path.to_string(),
+        });
+      }
+      return Ok(false);
     }
-
-    Ok(true)
   }
 
   pub(crate) fn validate_type_inheritance(
@@ -323,20 +199,22 @@ impl<'a> ValidationContext<'a> {
 
     let mut custom_types = Vec::new();
     match &self.schema.type_ {
-      Some(crate::database::schema::SchemaTypeOrArray::Single(t)) => {
-        if !crate::database::schema::is_primitive_type(t) {
+      Some(crate::database::object::SchemaTypeOrArray::Single(t)) => {
+        if !crate::database::object::is_primitive_type(t) {
           custom_types.push(t.clone());
         }
       }
-      Some(crate::database::schema::SchemaTypeOrArray::Multiple(arr)) => {
-        if arr.contains(&payload_primitive.to_string()) || (payload_primitive == "integer" && arr.contains(&"number".to_string())) {
-           // It natively matched a primitive in the array options, skip forcing custom proxy fallback
+      Some(crate::database::object::SchemaTypeOrArray::Multiple(arr)) => {
+        if arr.contains(&payload_primitive.to_string())
+          || (payload_primitive == "integer" && arr.contains(&"number".to_string()))
+        {
+          // It natively matched a primitive in the array options, skip forcing custom proxy fallback
         } else {
-           for t in arr {
-             if !crate::database::schema::is_primitive_type(t) {
-               custom_types.push(t.clone());
-             }
-           }
+          for t in arr {
+            if !crate::database::object::is_primitive_type(t) {
+              custom_types.push(t.clone());
+            }
+          }
         }
       }
       None => {}

version

@@ -1 +1 @@
-1.0.107
+1.0.125