typeorm
Version:
Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.
60 lines (59 loc) • 2.95 kB
TypeScript
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;
}