Support generic operator for relationship filters

.changeset/unlucky-spoons-trade.md

@@ -0,0 +1,25 @@
+---
+"@neo4j/graphql": minor
+---
+
+Introduce a new style for filtering relationships and connections.
+The quantifiers `SOME` | `NONE` | `SINGLE` | `ALL` are now available as a nested input object.
+
+**Relationship**
+
+```graphql
+{
+    movies(where: { genres: { some: { name: { equals: "some genre" } } } }) {
+        actorCount
+    }
+}
+```
+
+**Connection** 
+```graphql
+{
+    movies(where: { genresConnection: { some: { node: { name: { equals: "some genre" } } } } }) {
+        actorCount
+    }
+}
+```

packages/graphql/src/schema-model/relationship/model-adapters/RelationshipAdapter.ts

@@ -23,7 +23,6 @@ import type { Annotations } from "../../annotation/Annotation";
 import type { Argument } from "../../argument/Argument";
 import type { Attribute } from "../../attribute/Attribute";
 import { AttributeAdapter } from "../../attribute/model-adapters/AttributeAdapter";
-import { ListFiltersAdapter } from "../../attribute/model-adapters/ListFiltersAdapter";
 import type { Entity } from "../../entity/Entity";
 import type { EntityAdapter } from "../../entity/EntityAdapter";
 import { ConcreteEntityAdapter } from "../../entity/model-adapters/ConcreteEntityAdapter";
@@ -35,7 +34,6 @@ import type { NestedOperation, QueryDirection, Relationship, RelationshipDirecti
 import { RelationshipOperations } from "./RelationshipOperations";
 
 export class RelationshipAdapter {
-    private _listFiltersModel: ListFiltersAdapter | undefined;
     public readonly name: string;
     public readonly type: string;
     public readonly attributes: Map<string, AttributeAdapter> = new Map();
@@ -116,15 +114,6 @@ export class RelationshipAdapter {
         }
         return this._operations;
     }
-    public get listFiltersModel(): ListFiltersAdapter | undefined {
-        if (!this._listFiltersModel) {
-            if (!this.isList) {
-                return;
-            }
-            this._listFiltersModel = new ListFiltersAdapter(this);
-        }
-        return this._listFiltersModel;
-    }
 
     public get singular(): string {
         if (!this._singular) {

packages/graphql/src/schema-model/relationship/model-adapters/RelationshipDeclarationAdapter.ts

@@ -21,7 +21,6 @@ import { RelationshipNestedOperationsOption } from "../../../constants";
 import type { Annotations } from "../../annotation/Annotation";
 import type { Argument } from "../../argument/Argument";
 import type { AttributeAdapter } from "../../attribute/model-adapters/AttributeAdapter";
-import { ListFiltersAdapter } from "../../attribute/model-adapters/ListFiltersAdapter";
 import type { Entity } from "../../entity/Entity";
 import type { EntityAdapter } from "../../entity/EntityAdapter";
 import { ConcreteEntityAdapter } from "../../entity/model-adapters/ConcreteEntityAdapter";
@@ -35,7 +34,6 @@ import { RelationshipAdapter } from "./RelationshipAdapter";
 import { RelationshipDeclarationOperations } from "./RelationshipDeclarationOperations";
 
 export class RelationshipDeclarationAdapter {
-    private _listFiltersModel: ListFiltersAdapter | undefined;
     public readonly name: string;
     public readonly source: EntityAdapter;
     private rawEntity: Entity;
@@ -91,16 +89,6 @@ export class RelationshipDeclarationAdapter {
         this.firstDeclaredInTypeName = firstDeclaredInTypeName;
     }
 
-    public get listFiltersModel(): ListFiltersAdapter | undefined {
-        if (!this._listFiltersModel) {
-            if (!this.isList) {
-                return;
-            }
-            this._listFiltersModel = new ListFiltersAdapter(this);
-        }
-        return this._listFiltersModel;
-    }
-
     public get operations(): RelationshipDeclarationOperations {
         if (!this._operations) {
             return new RelationshipDeclarationOperations(this);

packages/graphql/src/schema-model/relationship/model-adapters/RelationshipDeclarationOperations.ts

@@ -17,8 +17,8 @@
  * limitations under the License.
  */
 
-import type { RelationshipDeclarationAdapter } from "./RelationshipDeclarationAdapter";
 import { RelationshipBaseOperations } from "./RelationshipBaseOperations";
+import type { RelationshipDeclarationAdapter } from "./RelationshipDeclarationAdapter";
 
 export class RelationshipDeclarationOperations extends RelationshipBaseOperations<RelationshipDeclarationAdapter> {
     constructor(relationshipDeclaration: RelationshipDeclarationAdapter) {
@@ -36,4 +36,12 @@ export class RelationshipDeclarationOperations extends RelationshipBaseOperation
     public get relationshipPropertiesFieldTypename(): string {
         return `${this.relationshipFieldTypename}Properties`;
     }
+
+    public get relationshipFiltersTypeName(): string {
+        return `${this.prefixForTypename}RelationshipFilters`;
+    }
+
+    public get connectionFiltersTypeName(): string {
+        return `${this.prefixForTypename}ConnectionFilters`;
+    }
 }

packages/graphql/src/schema-model/relationship/model-adapters/RelationshipOperations.ts

@@ -54,4 +54,12 @@ export class RelationshipOperations extends RelationshipBaseOperations<Relations
     public get edgeSubscriptionWhereInputTypeName(): string {
         return `${this.edgePrefix}SubscriptionWhere`;
     }
+
+    public get relationshipFiltersTypeName(): string {
+        return `${this.prefixForTypename}RelationshipFilters`;
+    }
+
+    public get connectionFiltersTypeName(): string {
+        return `${this.prefixForTypename}ConnectionFilters`;
+    }
 }