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MongoEntityManager.ts
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MongoEntityManager.ts
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import { Connection } from "../connection/Connection";
import { EntityManager } from "./EntityManager";
import { ObjectType } from "../common/ObjectType";
import {
AggregationCursor,
BulkWriteOpResultObject,
ChangeStream,
ChangeStreamOptions,
Code,
Collection,
CollectionAggregationOptions,
CollectionBulkWriteOptions,
CollectionInsertManyOptions,
CollectionInsertOneOptions,
CollectionOptions,
CollStats,
CommandCursor,
Cursor,
CursorResult,
DeleteWriteOpResultObject,
FindAndModifyWriteOpResultObject,
FindOneAndReplaceOption,
GeoHaystackSearchOptions,
GeoNearOptions,
InsertOneWriteOpResult,
InsertWriteOpResult,
MapReduceOptions,
MongoCallback,
MongoCountPreferences,
MongodbIndexOptions,
MongoError,
ObjectID,
OrderedBulkOperation,
ParallelCollectionScanOptions,
ReadPreference,
ReplaceOneOptions,
UnorderedBulkOperation,
UpdateWriteOpResult
} from "../driver/mongodb/typings";
import { ObjectLiteral } from "../common/ObjectLiteral";
import { MongoQueryRunner } from "../driver/mongodb/MongoQueryRunner";
import { MongoDriver } from "../driver/mongodb/MongoDriver";
import { DocumentToEntityTransformer } from "../query-builder/transformer/DocumentToEntityTransformer";
import { FindManyOptions } from "../find-options/FindManyOptions";
import { FindOptionsUtils } from "../find-options/FindOptionsUtils";
import { FindOneOptions } from "../find-options/FindOneOptions";
import { PlatformTools } from "../platform/PlatformTools";
import { DeepPartial } from "../common/DeepPartial";
import { QueryDeepPartialEntity } from "../query-builder/QueryPartialEntity";
import { InsertResult } from "../query-builder/result/InsertResult";
import { UpdateResult } from "../query-builder/result/UpdateResult";
import { DeleteResult } from "../query-builder/result/DeleteResult";
import { EntityMetadata } from "../metadata/EntityMetadata";
import { EntitySchema, FindConditions } from "../index";
import { BroadcasterResult } from "../subscriber/BroadcasterResult";
/**
* Entity manager supposed to work with any entity, automatically find its repository and call its methods,
* whatever entity type are you passing.
*
* This implementation is used for MongoDB driver which has some specifics in its EntityManager.
*/
export class MongoEntityManager extends EntityManager {
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
constructor(connection: Connection) {
super(connection);
}
// -------------------------------------------------------------------------
// Overridden Properties
// -------------------------------------------------------------------------
/**
* Gets query runner used to execute queries.
*/
get queryRunner(): MongoQueryRunner {
return (this.connection.driver as MongoDriver).queryRunner!;
}
// -------------------------------------------------------------------------
// Overridden Methods
// -------------------------------------------------------------------------
/**
* Finds entities that match given find options or conditions.
*/
async find<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, optionsOrConditions?: FindManyOptions<Entity> | Partial<Entity>): Promise<Entity[]> {
const query = this.convertFindManyOptionsOrConditionsToMongodbQuery(optionsOrConditions);
const cursor = await this.createEntityCursor(entityClassOrName, query);
if (FindOptionsUtils.isFindManyOptions(optionsOrConditions)) {
if (optionsOrConditions.select)
cursor.project(this.convertFindOptionsSelectToProjectCriteria(optionsOrConditions.select));
if (optionsOrConditions.skip)
cursor.skip(optionsOrConditions.skip);
if (optionsOrConditions.take)
cursor.limit(optionsOrConditions.take);
if (optionsOrConditions.order)
cursor.sort(this.convertFindOptionsOrderToOrderCriteria(optionsOrConditions.order));
}
return cursor.toArray();
}
/**
* Finds entities that match given find options or conditions.
* Also counts all entities that match given conditions,
* but ignores pagination settings (from and take options).
*/
async findAndCount<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, optionsOrConditions?: FindManyOptions<Entity> | Partial<Entity>): Promise<[Entity[], number]> {
const query = this.convertFindManyOptionsOrConditionsToMongodbQuery(optionsOrConditions);
const cursor = await this.createEntityCursor(entityClassOrName, query);
if (FindOptionsUtils.isFindManyOptions(optionsOrConditions)) {
if (optionsOrConditions.select)
cursor.project(this.convertFindOptionsSelectToProjectCriteria(optionsOrConditions.select));
if (optionsOrConditions.skip)
cursor.skip(optionsOrConditions.skip);
if (optionsOrConditions.take)
cursor.limit(optionsOrConditions.take);
if (optionsOrConditions.order)
cursor.sort(this.convertFindOptionsOrderToOrderCriteria(optionsOrConditions.order));
}
const [results, count] = await Promise.all<any>([
cursor.toArray(),
this.count(entityClassOrName, query),
]);
return [results, parseInt(count)];
}
/**
* Finds entities by ids.
* Optionally find options can be applied.
*/
async findByIds<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, ids: any[], optionsOrConditions?: FindManyOptions<Entity> | Partial<Entity>): Promise<Entity[]> {
const metadata = this.connection.getMetadata(entityClassOrName);
const query = this.convertFindManyOptionsOrConditionsToMongodbQuery(optionsOrConditions) || {};
const objectIdInstance = PlatformTools.load("mongodb").ObjectID;
query["_id"] = {
$in: ids.map(id => {
if (id instanceof objectIdInstance)
return id;
return id[metadata.objectIdColumn!.propertyName];
})
};
const cursor = await this.createEntityCursor(entityClassOrName, query);
if (FindOptionsUtils.isFindManyOptions(optionsOrConditions)) {
if (optionsOrConditions.select)
cursor.project(this.convertFindOptionsSelectToProjectCriteria(optionsOrConditions.select));
if (optionsOrConditions.skip)
cursor.skip(optionsOrConditions.skip);
if (optionsOrConditions.take)
cursor.limit(optionsOrConditions.take);
if (optionsOrConditions.order)
cursor.sort(this.convertFindOptionsOrderToOrderCriteria(optionsOrConditions.order));
}
return await cursor.toArray();
}
/**
* Finds first entity that matches given conditions and/or find options.
*/
async findOne<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string,
optionsOrConditions?: string | string[] | number | number[] | Date | Date[] | ObjectID | ObjectID[] | FindOneOptions<Entity> | DeepPartial<Entity>,
maybeOptions?: FindOneOptions<Entity>): Promise<Entity | undefined> {
const objectIdInstance = PlatformTools.load("mongodb").ObjectID;
const id = (optionsOrConditions instanceof objectIdInstance) || typeof optionsOrConditions === "string" ? optionsOrConditions : undefined;
const findOneOptionsOrConditions = (id ? maybeOptions : optionsOrConditions) as any;
const query = this.convertFindOneOptionsOrConditionsToMongodbQuery(findOneOptionsOrConditions) || {};
if (id) {
query["_id"] = (id instanceof objectIdInstance) ? id : new objectIdInstance(id);
}
const cursor = await this.createEntityCursor(entityClassOrName, query);
if (FindOptionsUtils.isFindOneOptions(findOneOptionsOrConditions)) {
if (findOneOptionsOrConditions.select)
cursor.project(this.convertFindOptionsSelectToProjectCriteria(findOneOptionsOrConditions.select));
if (findOneOptionsOrConditions.order)
cursor.sort(this.convertFindOptionsOrderToOrderCriteria(findOneOptionsOrConditions.order));
}
// const result = await cursor.limit(1).next();
const result = await cursor.limit(1).toArray();
return result.length > 0 ? result[0] : undefined;
}
/**
* Inserts a given entity into the database.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient INSERT query.
* Does not check if entity exist in the database, so query will fail if duplicate entity is being inserted.
* You can execute bulk inserts using this method.
*/
async insert<Entity>(target: ObjectType<Entity> | EntitySchema<Entity> | string, entity: QueryDeepPartialEntity<Entity> | QueryDeepPartialEntity<Entity>[]): Promise<InsertResult> {
// todo: convert entity to its database name
const result = new InsertResult();
if (entity instanceof Array) {
result.raw = await this.insertMany(target, entity);
Object.keys(result.raw.insertedIds).forEach((key: any) => {
let insertedId = result.raw.insertedIds[key];
result.generatedMaps.push(this.connection.driver.createGeneratedMap(this.connection.getMetadata(target), insertedId)!);
result.identifiers.push(this.connection.driver.createGeneratedMap(this.connection.getMetadata(target), insertedId)!);
});
} else {
result.raw = await this.insertOne(target, entity);
result.generatedMaps.push(this.connection.driver.createGeneratedMap(this.connection.getMetadata(target), result.raw.insertedId)!);
result.identifiers.push(this.connection.driver.createGeneratedMap(this.connection.getMetadata(target), result.raw.insertedId)!);
}
return result;
}
/**
* Updates entity partially. Entity can be found by a given conditions.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient UPDATE query.
* Does not check if entity exist in the database.
*/
async update<Entity>(target: ObjectType<Entity> | EntitySchema<Entity> | string, criteria: string | string[] | number | number[] | Date | Date[] | ObjectID | ObjectID[] | FindConditions<Entity>, partialEntity: QueryDeepPartialEntity<Entity>): Promise<UpdateResult> {
if (criteria instanceof Array) {
await Promise.all((criteria as any[]).map(criteriaItem => {
return this.update(target, criteriaItem, partialEntity);
}));
} else {
const metadata = this.connection.getMetadata(target);
await this.updateOne(target, this.convertMixedCriteria(metadata, criteria), { $set: partialEntity });
}
return new UpdateResult();
}
/**
* Deletes entities by a given conditions.
* Unlike save method executes a primitive operation without cascades, relations and other operations included.
* Executes fast and efficient DELETE query.
* Does not check if entity exist in the database.
*/
async delete<Entity>(target: ObjectType<Entity> | EntitySchema<Entity> | string, criteria: string | string[] | number | number[] | Date | Date[] | ObjectID | ObjectID[] | FindConditions<Entity>): Promise<DeleteResult> {
if (criteria instanceof Array) {
await Promise.all((criteria as any[]).map(criteriaItem => {
return this.delete(target, criteriaItem);
}));
} else {
await this.deleteOne(target, this.convertMixedCriteria(this.connection.getMetadata(target), criteria));
}
return new DeleteResult();
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Creates a cursor for a query that can be used to iterate over results from MongoDB.
*/
createCursor<Entity, T = any>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query?: ObjectLiteral): Cursor<T> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.cursor(metadata.tableName, query);
}
/**
* Creates a cursor for a query that can be used to iterate over results from MongoDB.
* This returns modified version of cursor that transforms each result into Entity model.
*/
createEntityCursor<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query?: ObjectLiteral): Cursor<Entity> {
const metadata = this.connection.getMetadata(entityClassOrName);
const cursor = this.createCursor(entityClassOrName, query);
this.applyEntityTransformationToCursor(metadata, cursor);
return cursor;
}
/**
* Execute an aggregation framework pipeline against the collection.
*/
aggregate<Entity, R = any>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, pipeline: ObjectLiteral[], options?: CollectionAggregationOptions): AggregationCursor<R> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.aggregate(metadata.tableName, pipeline, options);
}
/**
* Execute an aggregation framework pipeline against the collection.
* This returns modified version of cursor that transforms each result into Entity model.
*/
aggregateEntity<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, pipeline: ObjectLiteral[], options?: CollectionAggregationOptions): AggregationCursor<Entity> {
const metadata = this.connection.getMetadata(entityClassOrName);
const cursor = this.queryRunner.aggregate(metadata.tableName, pipeline, options);
this.applyEntityTransformationToCursor(metadata, cursor);
return cursor;
}
/**
* Perform a bulkWrite operation without a fluent API.
*/
bulkWrite<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, operations: ObjectLiteral[], options?: CollectionBulkWriteOptions): Promise<BulkWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.bulkWrite(metadata.tableName, operations, options);
}
/**
* Count number of matching documents in the db to a query.
*/
count<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query?: ObjectLiteral, options?: MongoCountPreferences): Promise<number> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.count(metadata.tableName, query, options);
}
/**
* Creates an index on the db and collection.
*/
createCollectionIndex<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, fieldOrSpec: string | any, options?: MongodbIndexOptions): Promise<string> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.createCollectionIndex(metadata.tableName, fieldOrSpec, options);
}
/**
* Creates multiple indexes in the collection, this method is only supported for MongoDB 2.6 or higher.
* Earlier version of MongoDB will throw a command not supported error.
* Index specifications are defined at http://docs.mongodb.org/manual/reference/command/createIndexes/.
*/
createCollectionIndexes<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, indexSpecs: ObjectLiteral[]): Promise<void> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.createCollectionIndexes(metadata.tableName, indexSpecs);
}
/**
* Delete multiple documents on MongoDB.
*/
deleteMany<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, options?: CollectionOptions): Promise<DeleteWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.deleteMany(metadata.tableName, query, options);
}
/**
* Delete a document on MongoDB.
*/
deleteOne<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, options?: CollectionOptions): Promise<DeleteWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.deleteOne(metadata.tableName, query, options);
}
/**
* The distinct command returns returns a list of distinct values for the given key across a collection.
*/
distinct<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, key: string, query: ObjectLiteral, options?: { readPreference?: ReadPreference | string }): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.distinct(metadata.tableName, key, query, options);
}
/**
* Drops an index from this collection.
*/
dropCollectionIndex<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, indexName: string, options?: CollectionOptions): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.dropCollectionIndex(metadata.tableName, indexName, options);
}
/**
* Drops all indexes from the collection.
*/
dropCollectionIndexes<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.dropCollectionIndexes(metadata.tableName);
}
/**
* Find a document and delete it in one atomic operation, requires a write lock for the duration of the operation.
*/
findOneAndDelete<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, options?: { projection?: Object, sort?: Object, maxTimeMS?: number }): Promise<FindAndModifyWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.findOneAndDelete(metadata.tableName, query, options);
}
/**
* Find a document and replace it in one atomic operation, requires a write lock for the duration of the operation.
*/
findOneAndReplace<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, replacement: Object, options?: FindOneAndReplaceOption): Promise<FindAndModifyWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.findOneAndReplace(metadata.tableName, query, replacement, options);
}
/**
* Find a document and update it in one atomic operation, requires a write lock for the duration of the operation.
*/
findOneAndUpdate<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, update: Object, options?: FindOneAndReplaceOption): Promise<FindAndModifyWriteOpResultObject> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.findOneAndUpdate(metadata.tableName, query, update, options);
}
/**
* Execute a geo search using a geo haystack index on a collection.
*/
geoHaystackSearch<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, x: number, y: number, options?: GeoHaystackSearchOptions): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.geoHaystackSearch(metadata.tableName, x, y, options);
}
/**
* Execute the geoNear command to search for items in the collection.
*/
geoNear<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, x: number, y: number, options?: GeoNearOptions): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.geoNear(metadata.tableName, x, y, options);
}
/**
* Run a group command across a collection.
*/
group<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, keys: Object | Array<any> | Function | Code, condition: Object, initial: Object, reduce: Function | Code, finalize: Function | Code, command: boolean, options?: { readPreference?: ReadPreference | string }): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.group(metadata.tableName, keys, condition, initial, reduce, finalize, command, options);
}
/**
* Retrieve all the indexes on the collection.
*/
collectionIndexes<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.collectionIndexes(metadata.tableName);
}
/**
* Retrieve all the indexes on the collection.
*/
collectionIndexExists<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, indexes: string | string[]): Promise<boolean> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.collectionIndexExists(metadata.tableName, indexes);
}
/**
* Retrieves this collections index info.
*/
collectionIndexInformation<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: { full: boolean }): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.collectionIndexInformation(metadata.tableName, options);
}
/**
* Initiate an In order bulk write operation, operations will be serially executed in the order they are added, creating a new operation for each switch in types.
*/
initializeOrderedBulkOp<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: CollectionOptions): OrderedBulkOperation {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.initializeOrderedBulkOp(metadata.tableName, options);
}
/**
* Initiate a Out of order batch write operation. All operations will be buffered into insert/update/remove commands executed out of order.
*/
initializeUnorderedBulkOp<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: CollectionOptions): UnorderedBulkOperation {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.initializeUnorderedBulkOp(metadata.tableName, options);
}
/**
* Inserts an array of documents into MongoDB.
*/
insertMany<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, docs: ObjectLiteral[], options?: CollectionInsertManyOptions): Promise<InsertWriteOpResult> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.insertMany(metadata.tableName, docs, options);
}
/**
* Inserts a single document into MongoDB.
*/
insertOne<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, doc: ObjectLiteral, options?: CollectionInsertOneOptions): Promise<InsertOneWriteOpResult> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.insertOne(metadata.tableName, doc, options);
}
/**
* Returns if the collection is a capped collection.
*/
isCapped<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.isCapped(metadata.tableName);
}
/**
* Get the list of all indexes information for the collection.
*/
listCollectionIndexes<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: { batchSize?: number, readPreference?: ReadPreference | string }): CommandCursor {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.listCollectionIndexes(metadata.tableName, options);
}
/**
* Run Map Reduce across a collection. Be aware that the inline option for out will return an array of results not a collection.
*/
mapReduce<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, map: Function | string, reduce: Function | string, options?: MapReduceOptions): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.mapReduce(metadata.tableName, map, reduce, options);
}
/**
* Return N number of parallel cursors for a collection allowing parallel reading of entire collection.
* There are no ordering guarantees for returned results.
*/
parallelCollectionScan<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: ParallelCollectionScanOptions): Promise<Cursor<Entity>[]> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.parallelCollectionScan(metadata.tableName, options);
}
/**
* Reindex all indexes on the collection Warning: reIndex is a blocking operation (indexes are rebuilt in the foreground) and will be slow for large collections.
*/
reIndex<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string): Promise<any> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.reIndex(metadata.tableName);
}
/**
* Reindex all indexes on the collection Warning: reIndex is a blocking operation (indexes are rebuilt in the foreground) and will be slow for large collections.
*/
rename<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, newName: string, options?: { dropTarget?: boolean }): Promise<Collection<any>> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.rename(metadata.tableName, newName, options);
}
/**
* Replace a document on MongoDB.
*/
replaceOne<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, doc: ObjectLiteral, options?: ReplaceOneOptions): Promise<UpdateWriteOpResult> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.replaceOne(metadata.tableName, query, doc, options);
}
/**
* Get all the collection statistics.
*/
stats<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, options?: { scale: number }): Promise<CollStats> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.stats(metadata.tableName, options);
}
watch<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, pipeline?: Object[], options?: ChangeStreamOptions): ChangeStream {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.watch(metadata.tableName, pipeline, options);
}
/**
* Update multiple documents on MongoDB.
*/
updateMany<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, update: ObjectLiteral, options?: { upsert?: boolean, w?: any, wtimeout?: number, j?: boolean }): Promise<UpdateWriteOpResult> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.updateMany(metadata.tableName, query, update, options);
}
/**
* Update a single document on MongoDB.
*/
updateOne<Entity>(entityClassOrName: ObjectType<Entity> | EntitySchema<Entity> | string, query: ObjectLiteral, update: ObjectLiteral, options?: ReplaceOneOptions): Promise<UpdateWriteOpResult> {
const metadata = this.connection.getMetadata(entityClassOrName);
return this.queryRunner.updateOne(metadata.tableName, query, update, options);
}
// -------------------------------------------------------------------------
// Protected Methods
// -------------------------------------------------------------------------
/**
* Converts FindManyOptions to mongodb query.
*/
protected convertFindManyOptionsOrConditionsToMongodbQuery<Entity>(optionsOrConditions: FindManyOptions<Entity> | Partial<Entity> | undefined): ObjectLiteral | undefined {
if (!optionsOrConditions)
return undefined;
if (FindOptionsUtils.isFindManyOptions(optionsOrConditions))
// If where condition is passed as a string which contains sql we have to ignore
// as mongo is not a sql database
return typeof optionsOrConditions.where === "string"
? {}
: optionsOrConditions.where;
return optionsOrConditions;
}
/**
* Converts FindOneOptions to mongodb query.
*/
protected convertFindOneOptionsOrConditionsToMongodbQuery<Entity>(optionsOrConditions: FindOneOptions<Entity> | Partial<Entity> | undefined): ObjectLiteral | undefined {
if (!optionsOrConditions)
return undefined;
if (FindOptionsUtils.isFindOneOptions(optionsOrConditions))
// If where condition is passed as a string which contains sql we have to ignore
// as mongo is not a sql database
return typeof optionsOrConditions.where === "string"
? {}
: optionsOrConditions.where;
return optionsOrConditions;
}
/**
* Converts FindOptions into mongodb order by criteria.
*/
protected convertFindOptionsOrderToOrderCriteria(order: ObjectLiteral) {
return Object.keys(order).reduce((orderCriteria, key) => {
switch (order[key]) {
case "DESC":
orderCriteria[key] = -1;
break;
case "ASC":
orderCriteria[key] = 1;
break;
default:
orderCriteria[key] = order[key];
}
return orderCriteria;
}, {} as ObjectLiteral);
}
/**
* Converts FindOptions into mongodb select by criteria.
*/
protected convertFindOptionsSelectToProjectCriteria(selects: (keyof any)[]) {
return selects.reduce((projectCriteria, key) => {
projectCriteria[key] = 1;
return projectCriteria;
}, {} as any);
}
/**
* Ensures given id is an id for query.
*/
protected convertMixedCriteria(metadata: EntityMetadata, idMap: any): ObjectLiteral {
if (idMap instanceof Object) {
return metadata.columns.reduce((query, column) => {
const columnValue = column.getEntityValue(idMap);
if (columnValue !== undefined)
query[column.databasePath] = columnValue;
return query;
}, {} as any);
}
// means idMap is just object id
const objectIdInstance = PlatformTools.load("mongodb").ObjectID;
return {
"_id": (idMap instanceof objectIdInstance) ? idMap : new objectIdInstance(idMap)
};
}
/**
* Overrides cursor's toArray and next methods to convert results to entity automatically.
*/
protected applyEntityTransformationToCursor<Entity>(metadata: EntityMetadata, cursor: Cursor<Entity> | AggregationCursor<Entity>) {
const ParentCursor = PlatformTools.load("mongodb").Cursor;
const queryRunner = this.queryRunner;
cursor.toArray = function (callback?: MongoCallback<Entity[]>) {
if (callback) {
ParentCursor.prototype.toArray.call(this, (error: MongoError, results: Entity[]): void => {
if (error) {
callback(error, results);
return;
}
const transformer = new DocumentToEntityTransformer();
const entities = transformer.transformAll(results, metadata);
// broadcast "load" events
const broadcastResult = new BroadcasterResult();
queryRunner.broadcaster.broadcastLoadEventsForAll(broadcastResult, metadata, entities);
Promise.all(broadcastResult.promises).then(() => callback(error, entities));
});
} else {
return ParentCursor.prototype.toArray.call(this).then((results: Entity[]) => {
const transformer = new DocumentToEntityTransformer();
const entities = transformer.transformAll(results, metadata);
// broadcast "load" events
const broadcastResult = new BroadcasterResult();
queryRunner.broadcaster.broadcastLoadEventsForAll(broadcastResult, metadata, entities);
return Promise.all(broadcastResult.promises).then(() => entities);
});
}
};
cursor.next = function (callback?: MongoCallback<CursorResult>) {
if (callback) {
ParentCursor.prototype.next.call(this, (error: MongoError, result: CursorResult): void => {
if (error || !result) {
callback(error, result);
return;
}
const transformer = new DocumentToEntityTransformer();
const entity = transformer.transform(result, metadata);
// broadcast "load" events
const broadcastResult = new BroadcasterResult();
queryRunner.broadcaster.broadcastLoadEventsForAll(broadcastResult, metadata, [entity]);
Promise.all(broadcastResult.promises).then(() => callback(error, entity));
});
} else {
return ParentCursor.prototype.next.call(this).then((result: Entity) => {
if (!result) return result;
const transformer = new DocumentToEntityTransformer();
const entity = transformer.transform(result, metadata);
// broadcast "load" events
const broadcastResult = new BroadcasterResult();
queryRunner.broadcaster.broadcastLoadEventsForAll(broadcastResult, metadata, [entity]);
return Promise.all(broadcastResult.promises).then(() => entity);
});
}
};
}
}