INNER CODE UNIT · TypeScript

SelfKeyDataloader

slaypni/type-graphql-dataloader · src/decorators/typeorm/ExplicitLoaderImpl.ts:196

class SelfKeyDataloader<V> extends DataLoader<any, V[]> {
  constructor(
    relation: RelationMetadata,
    connection: Connection,
    selfKeyFunc: (root: any) => any
  ) {
    super(async (ids) => {
      const columns = relation.inverseRelation!.joinColumns;
      const k = `${relation.propertyName}_${columns[0].propertyName}`;
      const entities = groupBy(
        await connection
          .createQueryBuilder<V>(relation.type, relation.propertyName)
          .where(
            `${relation.propertyName}.${columns[0].propertyPath} IN (:...${k})`
          )
          .setParameter(k, ids)
          .getMany(),
        selfKeyFunc

View source record →