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typeorm

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Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.

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import { DataSource } from "../data-source/DataSource"; import { ObjectLiteral } from "../common/ObjectLiteral"; import { QueryRunner } from "../query-runner/QueryRunner"; import { RelationMetadata } from "../metadata/RelationMetadata"; import { SelectQueryBuilder } from "./SelectQueryBuilder"; /** * Wraps entities and creates getters/setters for their relations * to be able to lazily load relations when accessing these relations. */ export declare class RelationLoader { private connection; constructor(connection: DataSource); /** * Loads relation data for the given entity and its relation. */ load(relation: RelationMetadata, entityOrEntities: ObjectLiteral | ObjectLiteral[], queryRunner?: QueryRunner, queryBuilder?: SelectQueryBuilder<any>): Promise<any[]>; /** * Loads data for many-to-one and one-to-one owner relations. * * (ow) post.category<=>category.post * loaded: category from post * example: SELECT category.id AS category_id, category.name AS category_name FROM category category * INNER JOIN post Post ON Post.category=category.id WHERE Post.id=1 */ loadManyToOneOrOneToOneOwner(relation: RelationMetadata, entityOrEntities: ObjectLiteral | ObjectLiteral[], queryRunner?: QueryRunner, queryBuilder?: SelectQueryBuilder<any>): Promise<any>; /** * Loads data for one-to-many and one-to-one not owner relations. * * SELECT post * FROM post post * WHERE post.[joinColumn.name] = entity[joinColumn.referencedColumn] */ loadOneToManyOrOneToOneNotOwner(relation: RelationMetadata, entityOrEntities: ObjectLiteral | ObjectLiteral[], queryRunner?: QueryRunner, queryBuilder?: SelectQueryBuilder<any>): Promise<any>; /** * Loads data for many-to-many owner relations. * * SELECT category * FROM category category * INNER JOIN post_categories post_categories * ON post_categories.postId = :postId * AND post_categories.categoryId = category.id */ loadManyToManyOwner(relation: RelationMetadata, entityOrEntities: ObjectLiteral | ObjectLiteral[], queryRunner?: QueryRunner, queryBuilder?: SelectQueryBuilder<any>): Promise<any>; /** * Loads data for many-to-many not owner relations. * * SELECT post * FROM post post * INNER JOIN post_categories post_categories * ON post_categories.postId = post.id * AND post_categories.categoryId = post_categories.categoryId */ loadManyToManyNotOwner(relation: RelationMetadata, entityOrEntities: ObjectLiteral | ObjectLiteral[], queryRunner?: QueryRunner, queryBuilder?: SelectQueryBuilder<any>): Promise<any>; /** * Wraps given entity and creates getters/setters for its given relation * to be able to lazily load data when accessing this relation. */ enableLazyLoad(relation: RelationMetadata, entity: ObjectLiteral, queryRunner?: QueryRunner): void; }