d59c4e585f
- GraphQLModule: Apollo Federation 2 at /graphql - Textbook/Chapter/KnowledgePoint/Question @key with @ResolveReference - RouterAuthGuard: validate Router-Authorization header (ADR-036) - batchFind methods added to 4 repositories - Domain modules export repositories for GraphqlModule injection
85 lines
1.7 KiB
TypeScript
85 lines
1.7 KiB
TypeScript
/**
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* content Textbook Resolver（v2.1 M1）
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*
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* Apollo Federation 子图：Textbook Entity
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* - @key(fields: "id") 支持跨子图引用
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* - @ResolveReference 使用 DataLoader 批量加载（ADR-035）
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* - Query 入口供 Apollo Router 直接查询
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*/
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import {
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Resolver,
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Query,
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Args,
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ID,
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ResolveReference,
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ObjectType,
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Field,
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Directive,
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} from "@nestjs/graphql";
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import {
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DataLoaderService,
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type TextbookEntity,
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} from "../dataloader.service.js";
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/**
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* Textbook ObjectType（Federation @key）
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* 对应 content_textbooks 表
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*/
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@ObjectType()
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@Directive(`@key(fields: "id")`)
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export class Textbook {
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@Field(() => ID)
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id!: string;
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@Field()
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title!: string;
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@Field()
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subjectId!: string;
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@Field()
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gradeId!: string;
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@Field()
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version!: string;
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@Field()
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status!: string;
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@Field({ nullable: true })
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tenantId: string | null = null;
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@Field()
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createdAt!: Date;
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@Field()
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updatedAt!: Date;
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}
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@Resolver(() => Textbook)
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export class TextbookResolver {
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constructor(private readonly loader: DataLoaderService) {}
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/**
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* Federation Reference Resolver
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*
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* 当其他子图通过 @key 引用 Textbook 时，Router 调用此方法解析。
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* 使用 DataLoader 批量加载，消除 N+1 查询（ADR-035）。
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*/
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@ResolveReference()
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async resolveReference(ref: { id: string }): Promise<TextbookEntity | null> {
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return this.loader.textbookLoader.load(ref.id);
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}
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/**
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* Query: textbook(id) → Textbook
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* 通过 Apollo Router 访问，直连被 RouterAuthGuard 拒绝（ADR-036）
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*/
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@Query(() => Textbook, { nullable: true })
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async textbook(
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@Args("id", { type: () => ID }) id: string,
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): Promise<TextbookEntity | null> {
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return this.loader.textbookLoader.load(id);
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}
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}
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