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Merge pull request neo4j#3889 from mjfwebb/schema-model-abstract-types-2
Implement interfaces and unions
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106 changes: 106 additions & 0 deletions
106
packages/graphql/src/schema-model/entity/InterfaceEntity.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * Copyright (c) "Neo4j" | ||
| * Neo4j Sweden AB [http://neo4j.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| import { Neo4jGraphQLSchemaValidationError } from "../../classes"; | ||
| import type { Annotation, Annotations } from "../annotation/Annotation"; | ||
| import { annotationToKey } from "../annotation/Annotation"; | ||
| import type { Attribute } from "../attribute/Attribute"; | ||
| import type { Relationship } from "../relationship/Relationship"; | ||
| import type { CompositeEntity } from "./CompositeEntity"; | ||
| import type { ConcreteEntity } from "./ConcreteEntity"; | ||
|
|
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| export class InterfaceEntity implements CompositeEntity { | ||
| public readonly name: string; | ||
| public readonly concreteEntities: ConcreteEntity[]; | ||
| public readonly attributes: Map<string, Attribute> = new Map(); | ||
| public readonly relationships: Map<string, Relationship> = new Map(); | ||
| public readonly annotations: Partial<Annotations> = {}; | ||
|
|
||
| constructor({ | ||
| name, | ||
| concreteEntities, | ||
| attributes = [], | ||
| annotations = [], | ||
| relationships = [], | ||
| }: { | ||
| name: string; | ||
| concreteEntities: ConcreteEntity[]; | ||
| attributes?: Attribute[]; | ||
| annotations?: Annotation[]; | ||
| relationships?: Relationship[]; | ||
| }) { | ||
| this.name = name; | ||
| this.concreteEntities = concreteEntities; | ||
| for (const attribute of attributes) { | ||
| this.addAttribute(attribute); | ||
| } | ||
|
|
||
| for (const annotation of annotations) { | ||
| this.addAnnotation(annotation); | ||
| } | ||
|
|
||
| for (const relationship of relationships) { | ||
| this.addRelationship(relationship); | ||
| } | ||
| } | ||
|
|
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| isConcreteEntity(): this is ConcreteEntity { | ||
| return false; | ||
| } | ||
| isCompositeEntity(): this is CompositeEntity { | ||
| return true; | ||
| } | ||
|
|
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| private addAttribute(attribute: Attribute): void { | ||
| if (this.attributes.has(attribute.name)) { | ||
| throw new Neo4jGraphQLSchemaValidationError(`Attribute ${attribute.name} already exists in ${this.name}`); | ||
| } | ||
| this.attributes.set(attribute.name, attribute); | ||
| } | ||
|
|
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| private addAnnotation(annotation: Annotation): void { | ||
| const annotationKey = annotationToKey(annotation); | ||
| const existingAnnotation = this.annotations[annotationKey]; | ||
|
|
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| if (existingAnnotation) { | ||
| throw new Neo4jGraphQLSchemaValidationError(`Annotation ${annotationKey} already exists in ${this.name}`); | ||
| } | ||
|
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| // We cast to any because we aren't narrowing the Annotation type here. | ||
| // There's no reason to narrow either, since we care more about performance. | ||
| this.annotations[annotationKey] = annotation as any; | ||
| } | ||
|
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| public addRelationship(relationship: Relationship): void { | ||
| if (this.relationships.has(relationship.name)) { | ||
| throw new Neo4jGraphQLSchemaValidationError( | ||
| `Attribute ${relationship.name} already exists in ${this.name}` | ||
| ); | ||
| } | ||
| this.relationships.set(relationship.name, relationship); | ||
| } | ||
|
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| public findAttribute(name: string): Attribute | undefined { | ||
| return this.attributes.get(name); | ||
| } | ||
|
|
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| public findRelationship(name: string): Relationship | undefined { | ||
| return this.relationships.get(name); | ||
| } | ||
| } |
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64 changes: 64 additions & 0 deletions
64
packages/graphql/src/schema-model/entity/model-adapters/InterfaceEntityAdapter.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright (c) "Neo4j" | ||
| * Neo4j Sweden AB [http://neo4j.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| import type { Annotations } from "../../annotation/Annotation"; | ||
| import type { Attribute } from "../../attribute/Attribute"; | ||
| import { AttributeAdapter } from "../../attribute/model-adapters/AttributeAdapter"; | ||
| import { RelationshipAdapter } from "../../relationship/model-adapters/RelationshipAdapter"; | ||
| import type { Relationship } from "../../relationship/Relationship"; | ||
| import type { ConcreteEntity } from "../ConcreteEntity"; | ||
| import type { InterfaceEntity } from "../InterfaceEntity"; | ||
| import { ConcreteEntityAdapter } from "./ConcreteEntityAdapter"; | ||
|
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| export class InterfaceEntityAdapter { | ||
| public readonly name: string; | ||
| public concreteEntities: ConcreteEntityAdapter[]; | ||
| public readonly attributes: Map<string, AttributeAdapter> = new Map(); | ||
| public readonly relationships: Map<string, RelationshipAdapter> = new Map(); | ||
| public readonly annotations: Partial<Annotations>; | ||
|
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| constructor(entity: InterfaceEntity) { | ||
| this.name = entity.name; | ||
| this.concreteEntities = []; | ||
| this.annotations = entity.annotations; | ||
| this.initAttributes(entity.attributes); | ||
| this.initRelationships(entity.relationships); | ||
| this.initConcreteEntities(entity.concreteEntities); | ||
| } | ||
|
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| private initConcreteEntities(entities: ConcreteEntity[]) { | ||
| for (const entity of entities) { | ||
| const entityAdapter = new ConcreteEntityAdapter(entity); | ||
| this.concreteEntities.push(entityAdapter); | ||
| } | ||
| } | ||
|
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| private initAttributes(attributes: Map<string, Attribute>) { | ||
| for (const [attributeName, attribute] of attributes.entries()) { | ||
| const attributeAdapter = new AttributeAdapter(attribute); | ||
| this.attributes.set(attributeName, attributeAdapter); | ||
| } | ||
| } | ||
|
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| private initRelationships(relationships: Map<string, Relationship>) { | ||
| for (const [relationshipName, relationship] of relationships.entries()) { | ||
| this.relationships.set(relationshipName, new RelationshipAdapter(relationship, this)); | ||
| } | ||
| } | ||
| } |
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