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nukak

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flexible and efficient ORM, with declarative JSON syntax and smart type-safety

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import { getMeta } from '../entity/decorator/index.js'; import { GenericRepository } from '../repository/index.js'; import { augmentWhere, clone, filterPersistableRelationKeys, filterRelationKeys, getKeys } from '../util/index.js'; export class AbstractQuerier { findOneById(entity, id, q = {}) { const meta = getMeta(entity); q.$where = augmentWhere(meta, q.$where, id); return this.findOne(entity, q); } async findOne(entity, q) { const rows = await this.findMany(entity, { ...q, $limit: 1 }); return rows[0]; } findManyAndCount(entity, q) { const qCount = { ...q, }; delete qCount.$sort; delete qCount.$limit; delete qCount.$skip; return Promise.all([this.findMany(entity, q), this.count(entity, qCount)]); } async insertOne(entity, payload) { const [id] = await this.insertMany(entity, [payload]); return id; } updateOneById(entity, id, payload) { return this.updateMany(entity, { $where: id }, payload); } deleteOneById(entity, id, opts) { return this.deleteMany(entity, { $where: id }, opts); } async saveOne(entity, payload) { const [id] = await this.saveMany(entity, [payload]); return id; } async saveMany(entity, payload) { const meta = getMeta(entity); const ids = []; const updates = []; const inserts = []; for (const it of payload) { if (it[meta.id]) { if (getKeys(it).length === 1) { ids.push(it[meta.id]); } else { updates.push(it); } } else { inserts.push(it); } } return Promise.all([ ...ids, ...(inserts.length ? await this.insertMany(entity, inserts) : []), ...updates.map(async (it) => { const { [meta.id]: id, ...data } = it; await this.updateOneById(entity, id, data); return id; }), ]); } async fillToManyRelations(entity, payload, select) { if (!payload.length) { return; } const meta = getMeta(entity); const relKeys = filterRelationKeys(meta, select); for (const relKey of relKeys) { const relOpts = meta.relations[relKey]; const relEntity = relOpts.entity(); const relSelect = clone(select[relKey]); const relQuery = relSelect === true || relSelect === undefined ? {} : Array.isArray(relSelect) ? { $select: relSelect } : relSelect; const ids = payload.map((it) => it[meta.id]); if (relOpts.through) { const localField = relOpts.references[0].local; const throughEntity = relOpts.through(); const throughMeta = getMeta(throughEntity); const targetRelKey = getKeys(throughMeta.relations).find((key) => throughMeta.relations[key].references.some(({ local }) => local === relOpts.references[1].local)); const throughFounds = await this.findMany(throughEntity, { ...relQuery, $select: { [localField]: true, [targetRelKey]: { ...relQuery, $required: true, }, }, $where: { ...relQuery.$where, [localField]: ids, }, }); const founds = throughFounds.map((it) => ({ ...it[targetRelKey], [localField]: it[localField] })); this.putChildrenInParents(payload, founds, meta.id, localField, relKey); } else if (relOpts.cardinality === '1m') { const foreignField = relOpts.references[0].foreign; if (relQuery.$select) { if (Array.isArray(relQuery.$select)) { if (!relQuery.$select.includes(foreignField)) { relQuery.$select.push(foreignField); } } else if (!relQuery.$select[foreignField]) { relQuery.$select[foreignField] = true; } } relQuery.$where = { ...relQuery.$where, [foreignField]: ids }; const founds = await this.findMany(relEntity, relQuery); this.putChildrenInParents(payload, founds, meta.id, foreignField, relKey); } } } putChildrenInParents(parents, children, parentIdKey, referenceKey, relKey) { const childrenByParentMap = children.reduce((acc, child) => { const parenId = child[referenceKey]; if (!acc[parenId]) { acc[parenId] = []; } acc[parenId].push(child); return acc; }, {}); for (const parent of parents) { const parentId = parent[parentIdKey]; parent[relKey] = childrenByParentMap[parentId]; } } async insertRelations(entity, payload) { const meta = getMeta(entity); await Promise.all(payload.map((it) => { const relKeys = filterPersistableRelationKeys(meta, it, 'persist'); if (!relKeys.length) { return; } return Promise.all(relKeys.map((relKey) => this.saveRelation(entity, it, relKey))); })); } async updateRelations(entity, q, payload) { const meta = getMeta(entity); const relKeys = filterPersistableRelationKeys(meta, payload, 'persist'); if (!relKeys.length) { return; } const founds = await this.findMany(entity, { ...q, $select: [meta.id] }); const ids = founds.map((found) => found[meta.id]); await Promise.all(ids.map((id) => Promise.all(relKeys.map((relKey) => this.saveRelation(entity, { ...payload, [meta.id]: id }, relKey, true))))); } async deleteRelations(entity, ids, opts) { const meta = getMeta(entity); const relKeys = filterPersistableRelationKeys(meta, meta.relations, 'delete'); for (const relKey of relKeys) { const relOpts = meta.relations[relKey]; const relEntity = relOpts.entity(); const localField = relOpts.references[0].local; if (relOpts.through) { const throughEntity = relOpts.through(); await this.deleteMany(throughEntity, { $where: { [localField]: ids } }, opts); return; } await this.deleteMany(relEntity, { [localField]: ids }, opts); } } async saveRelation(entity, payload, relKey, isUpdate) { const meta = getMeta(entity); const id = payload[meta.id]; const { entity: entityGetter, cardinality, references, through } = meta.relations[relKey]; const relEntity = entityGetter(); const relPayload = payload[relKey]; if (cardinality === '1m' || cardinality === 'mm') { if (through) { const localField = references[0].local; const throughEntity = through(); if (isUpdate) { await this.deleteMany(throughEntity, { $where: { [localField]: id } }); } if (relPayload) { const savedIds = await this.saveMany(relEntity, relPayload); const throughBodies = savedIds.map((relId) => ({ [references[0].local]: id, [references[1].local]: relId, })); await this.insertMany(throughEntity, throughBodies); } return; } const foreignField = references[0].foreign; if (isUpdate) { await this.deleteMany(relEntity, { $where: { [foreignField]: id } }); } if (relPayload) { for (const it of relPayload) { it[foreignField] = id; } await this.saveMany(relEntity, relPayload); } return; } if (cardinality === '11') { const foreignField = references[0].foreign; if (relPayload === null) { await this.deleteMany(relEntity, { $where: { [foreignField]: id } }); return; } await this.saveOne(relEntity, { ...relPayload, [foreignField]: id }); return; } if (cardinality === 'm1' && relPayload) { const localField = references[0].local; const referenceId = await this.insertOne(relEntity, relPayload); await this.updateOneById(entity, id, { [localField]: referenceId }); return; } } getRepository(entity) { return new GenericRepository(entity, this); } async transaction(callback) { try { await this.beginTransaction(); const res = await callback(); await this.commitTransaction(); return res; } catch (err) { await this.rollbackTransaction(); throw err; } finally { await this.release(); } } async releaseIfFree() { if (!this.hasOpenTransaction) { await this.release(); } } } //# 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{ getMeta } from '../entity/decorator/index.js';\nimport { GenericRepository } from '../repository/index.js';\nimport type {\n  IdValue,\n  Querier,\n  Query,\n  QueryConflictPaths,\n  QueryOne,\n  QueryOptions,\n  QuerySearch,\n  QuerySelect,\n  QueryUpdateResult,\n  RelationKey,\n  RelationValue,\n  Repository,\n  Type,\n} from '../type/index.js';\nimport { augmentWhere, clone, filterPersistableRelationKeys, filterRelationKeys, getKeys } from '../util/index.js';\n\nexport abstract class AbstractQuerier implements Querier {\n  findOneById<E>(entity: Type<E>, id: IdValue<E>, q: QueryOne<E> = {}) {\n    const meta = getMeta(entity);\n    q.$where = augmentWhere(meta, q.$where, id);\n    return this.findOne(entity, q);\n  }\n\n  async findOne<E>(entity: Type<E>, q: QueryOne<E>) {\n    const rows = await this.findMany(entity, { ...q, $limit: 1 });\n    return rows[0];\n  }\n\n  abstract findMany<E>(entity: Type<E>, q: Query<E>): Promise<E[]>;\n\n  findManyAndCount<E>(entity: Type<E>, q: Query<E>) {\n    const qCount = {\n      ...q,\n    } satisfies QuerySearch<E>;\n    delete qCount.$sort;\n    delete qCount.$limit;\n    delete qCount.$skip;\n    return Promise.all([this.findMany(entity, q), this.count(entity, qCount)]);\n  }\n\n  abstract count<E>(entity: Type<E>, q: QuerySearch<E>): Promise<number>;\n\n  async insertOne<E>(entity: Type<E>, payload: E) {\n    const [id] = await this.insertMany(entity, [payload]);\n    return id;\n  }\n\n  abstract insertMany<E>(entity: Type<E>, payload: E[]): Promise<IdValue<E>[]>;\n\n  updateOneById<E>(entity: Type<E>, id: IdValue<E>, payload: E) {\n    return this.updateMany(entity, { $where: id }, payload);\n  }\n\n  abstract updateMany<E>(entity: Type<E>, q: QuerySearch<E>, payload: E): Promise<number>;\n\n  abstract upsertOne<E>(entity: Type<E>, conflictPaths: QueryConflictPaths<E>, payload: E): Promise<QueryUpdateResult>;\n\n  deleteOneById<E>(entity: Type<E>, id: IdValue<E>, opts?: QueryOptions) {\n    return this.deleteMany(entity, { $where: id }, opts);\n  }\n\n  abstract deleteMany<E>(entity: Type<E>, q: QuerySearch<E>, opts?: QueryOptions): Promise<number>;\n\n  async saveOne<E>(entity: Type<E>, payload: E) {\n    const [id] = await this.saveMany(entity, [payload]);\n    return id;\n  }\n\n  async saveMany<E>(entity: Type<E>, payload: E[]) {\n    const meta = getMeta(entity);\n    const ids: IdValue<E>[] = [];\n    const updates: E[] = [];\n    const inserts: E[] = [];\n\n    for (const it of payload) {\n      if (it[meta.id]) {\n        if (getKeys(it).length === 1) {\n          ids.push(it[meta.id]);\n        } else {\n          updates.push(it);\n        }\n      } else {\n        inserts.push(it);\n      }\n    }\n\n    return Promise.all([\n      ...ids,\n      ...(inserts.length ? await this.insertMany(entity, inserts) : []),\n      ...updates.map(async (it) => {\n        const { [meta.id]: id, ...data } = it;\n        await this.updateOneById(entity, id, data as E);\n        return id;\n      }),\n    ]);\n  }\n\n  protected async fillToManyRelations<E>(entity: Type<E>, payload: E[], select: QuerySelect<E>) {\n    if (!payload.length) {\n      return;\n    }\n\n    const meta = getMeta(entity);\n    const relKeys = filterRelationKeys(meta, select);\n\n    for (const relKey of relKeys) {\n      const relOpts = meta.relations[relKey];\n      const relEntity = relOpts.entity();\n      const relSelect = clone(select[relKey as string]);\n      const relQuery: Query<unknown> =\n        relSelect === true || relSelect === undefined\n          ? {}\n          : Array.isArray(relSelect)\n            ? { $select: relSelect }\n            : relSelect;\n      const ids = payload.map((it) => it[meta.id]);\n\n      if (relOpts.through) {\n        const localField = relOpts.references[0].local;\n        const throughEntity = relOpts.through();\n        const throughMeta = getMeta(throughEntity);\n        const targetRelKey = getKeys(throughMeta.relations).find((key) =>\n          throughMeta.relations[key].references.some(({ local }) => local === relOpts.references[1].local),\n        );\n        const throughFounds = await this.findMany(throughEntity, {\n          ...relQuery,\n          $select: {\n            [localField]: true,\n            [targetRelKey]: {\n              ...relQuery,\n              $required: true,\n            },\n          },\n          $where: {\n            ...relQuery.$where,\n            [localField]: ids,\n          },\n        });\n        const founds = throughFounds.map((it) => ({ ...it[targetRelKey], [localField]: it[localField] }));\n        this.putChildrenInParents(payload, founds, meta.id, localField, relKey);\n      } else if (relOpts.cardinality === '1m') {\n        const foreignField = relOpts.references[0].foreign;\n        if (relQuery.$select) {\n          if (Array.isArray(relQuery.$select)) {\n            if (!relQuery.$select.includes(foreignField)) {\n              relQuery.$select.push(foreignField);\n            }\n          } else if (!relQuery.$select[foreignField]) {\n            relQuery.$select[foreignField] = true;\n          }\n        }\n        relQuery.$where = { ...relQuery.$where, [foreignField]: ids };\n        const founds = await this.findMany(relEntity, relQuery);\n        this.putChildrenInParents(payload, founds, meta.id, foreignField, relKey);\n      }\n    }\n  }\n\n  protected putChildrenInParents<E>(\n    parents: E[],\n    children: E[],\n    parentIdKey: string,\n    referenceKey: string,\n    relKey: string,\n  ): void {\n    const childrenByParentMap = children.reduce((acc, child) => {\n      const parenId = child[referenceKey];\n      if (!acc[parenId]) {\n        acc[parenId] = [];\n      }\n      acc[parenId].push(child);\n      return acc;\n    }, {});\n\n    for (const parent of parents) {\n      const parentId = parent[parentIdKey];\n      parent[relKey] = childrenByParentMap[parentId];\n    }\n  }\n\n  protected async insertRelations<E>(entity: Type<E>, payload: E[]) {\n    const meta = getMeta(entity);\n    await Promise.all(\n      payload.map((it) => {\n        const relKeys = filterPersistableRelationKeys(meta, it, 'persist');\n        if (!relKeys.length) {\n          return;\n        }\n        return Promise.all(relKeys.map((relKey) => this.saveRelation(entity, it, relKey)));\n      }),\n    );\n  }\n\n  protected async updateRelations<E>(entity: Type<E>, q: QuerySearch<E>, payload: E) {\n    const meta = getMeta(entity);\n    const relKeys = filterPersistableRelationKeys(meta, payload, 'persist');\n\n    if (!relKeys.length) {\n      return;\n    }\n\n    const founds = await this.findMany(entity, { ...q, $select: [meta.id] });\n    const ids = founds.map((found) => found[meta.id]);\n\n    await Promise.all(\n      ids.map((id) =>\n        Promise.all(relKeys.map((relKey) => this.saveRelation(entity, { ...payload, [meta.id]: id }, relKey, true))),\n      ),\n    );\n  }\n\n  protected async deleteRelations<E>(entity: Type<E>, ids: IdValue<E>[], opts?: QueryOptions) {\n    const meta = getMeta(entity);\n    const relKeys = filterPersistableRelationKeys(meta, meta.relations as E, 'delete');\n\n    for (const relKey of relKeys) {\n      const relOpts = meta.relations[relKey];\n      const relEntity = relOpts.entity();\n      const localField = relOpts.references[0].local;\n      if (relOpts.through) {\n        const throughEntity = relOpts.through();\n        await this.deleteMany(throughEntity, { $where: { [localField]: ids } }, opts);\n        return;\n      }\n      await this.deleteMany(relEntity, { [localField]: ids }, opts);\n    }\n  }\n\n  protected async saveRelation<E>(entity: Type<E>, payload: E, relKey: RelationKey<E>, isUpdate?: boolean) {\n    const meta = getMeta(entity);\n    const id = payload[meta.id];\n    const { entity: entityGetter, cardinality, references, through } = meta.relations[relKey];\n    const relEntity = entityGetter();\n    const relPayload = payload[relKey] as unknown as RelationValue<E>[];\n\n    if (cardinality === '1m' || cardinality === 'mm') {\n      if (through) {\n        const localField = references[0].local;\n\n        const throughEntity = through();\n        if (isUpdate) {\n          await this.deleteMany(throughEntity, { $where: { [localField]: id } });\n        }\n        if (relPayload) {\n          const savedIds = await this.saveMany(relEntity, relPayload);\n          const throughBodies = savedIds.map((relId) => ({\n            [references[0].local]: id,\n            [references[1].local]: relId,\n          }));\n          await this.insertMany(throughEntity, throughBodies);\n        }\n        return;\n      }\n      const foreignField = references[0].foreign;\n      if (isUpdate) {\n        await this.deleteMany(relEntity, { $where: { [foreignField]: id } });\n      }\n      if (relPayload) {\n        for (const it of relPayload) {\n          it[foreignField] = id;\n        }\n        await this.saveMany(relEntity, relPayload);\n      }\n      return;\n    }\n\n    if (cardinality === '11') {\n      const foreignField = references[0].foreign;\n      if (relPayload === null) {\n        await this.deleteMany(relEntity, { $where: { [foreignField]: id } });\n        return;\n      }\n      await this.saveOne(relEntity, { ...relPayload, [foreignField]: id });\n      return;\n    }\n\n    if (cardinality === 'm1' && relPayload) {\n      const localField = references[0].local;\n      const referenceId = await this.insertOne(relEntity, relPayload);\n      await this.updateOneById(entity, id, { [localField]: referenceId });\n      return;\n    }\n  }\n\n  getRepository<E>(entity: Type<E>): Repository<E> {\n    return new GenericRepository(entity, this);\n  }\n\n  abstract readonly hasOpenTransaction: boolean;\n\n  async transaction<T>(callback: () => Promise<T>) {\n    try {\n      await this.beginTransaction();\n      const res = await callback();\n      await this.commitTransaction();\n      return res;\n    } catch (err) {\n      await this.rollbackTransaction();\n      throw err;\n    } finally {\n      await this.release();\n    }\n  }\n\n  async releaseIfFree() {\n    if (!this.hasOpenTransaction) {\n      await this.release();\n    }\n  }\n\n  abstract beginTransaction(): Promise<void>;\n\n  abstract commitTransaction(): Promise<void>;\n\n  abstract rollbackTransaction(): Promise<void>;\n\n  abstract release(): Promise<void>;\n}\n"]}