'use strict'; const deprecate = require('util').deprecate; const deprecateOptions = require('./utils').deprecateOptions; const checkCollectionName = require('./utils').checkCollectionName; const ObjectID = require('mongodb-core').BSON.ObjectID; const AggregationCursor = require('./aggregation_cursor'); const MongoError = require('mongodb-core').MongoError; const toError = require('./utils').toError; const normalizeHintField = require('./utils').normalizeHintField; const handleCallback = require('./utils').handleCallback; const decorateCommand = require('./utils').decorateCommand; const decorateWithCollation = require('./utils').decorateWithCollation; const decorateWithReadConcern = require('./utils').decorateWithReadConcern; const formattedOrderClause = require('./utils').formattedOrderClause; const ReadPreference = require('mongodb-core').ReadPreference; const CommandCursor = require('./command_cursor'); const unordered = require('./bulk/unordered'); const ordered = require('./bulk/ordered'); const ChangeStream = require('./change_stream'); const executeOperation = require('./utils').executeOperation; const applyWriteConcern = require('./utils').applyWriteConcern; const resolveReadPreference = require('./utils').resolveReadPreference; // Operations const bulkWrite = require('./operations/collection_ops').bulkWrite; const checkForAtomicOperators = require('./operations/collection_ops').checkForAtomicOperators; const count = require('./operations/collection_ops').count; const countDocuments = require('./operations/collection_ops').countDocuments; const createIndex = require('./operations/collection_ops').createIndex; const createIndexes = require('./operations/collection_ops').createIndexes; const deleteMany = require('./operations/collection_ops').deleteMany; const deleteOne = require('./operations/collection_ops').deleteOne; const distinct = require('./operations/collection_ops').distinct; const dropIndex = require('./operations/collection_ops').dropIndex; const dropIndexes = require('./operations/collection_ops').dropIndexes; const ensureIndex = require('./operations/collection_ops').ensureIndex; const findAndModify = require('./operations/collection_ops').findAndModify; const findAndRemove = require('./operations/collection_ops').findAndRemove; const findOne = require('./operations/collection_ops').findOne; const findOneAndDelete = require('./operations/collection_ops').findOneAndDelete; const findOneAndReplace = require('./operations/collection_ops').findOneAndReplace; const findOneAndUpdate = require('./operations/collection_ops').findOneAndUpdate; const geoHaystackSearch = require('./operations/collection_ops').geoHaystackSearch; const group = require('./operations/collection_ops').group; const indexes = require('./operations/collection_ops').indexes; const indexExists = require('./operations/collection_ops').indexExists; const indexInformation = require('./operations/collection_ops').indexInformation; const insertOne = require('./operations/collection_ops').insertOne; const isCapped = require('./operations/collection_ops').isCapped; const mapReduce = require('./operations/collection_ops').mapReduce; const optionsOp = require('./operations/collection_ops').optionsOp; const parallelCollectionScan = require('./operations/collection_ops').parallelCollectionScan; const prepareDocs = require('./operations/collection_ops').prepareDocs; const reIndex = require('./operations/collection_ops').reIndex; const removeDocuments = require('./operations/collection_ops').removeDocuments; const rename = require('./operations/collection_ops').rename; const replaceOne = require('./operations/collection_ops').replaceOne; const save = require('./operations/collection_ops').save; const stats = require('./operations/collection_ops').stats; const updateDocuments = require('./operations/collection_ops').updateDocuments; const updateMany = require('./operations/collection_ops').updateMany; const updateOne = require('./operations/collection_ops').updateOne; /** * @fileOverview The **Collection** class is an internal class that embodies a MongoDB collection * allowing for insert/update/remove/find and other command operation on that MongoDB collection. * * **COLLECTION Cannot directly be instantiated** * @example * const MongoClient = require('mongodb').MongoClient; * const test = require('assert'); * // Connection url * const url = 'mongodb://localhost:27017'; * // Database Name * const dbName = 'test'; * // Connect using MongoClient * MongoClient.connect(url, function(err, client) { * // Create a collection we want to drop later * const col = client.db(dbName).collection('createIndexExample1'); * // Show that duplicate records got dropped * col.find({}).toArray(function(err, items) { * test.equal(null, err); * test.equal(4, items.length); * client.close(); * }); * }); */ const mergeKeys = ['ignoreUndefined']; /** * Create a new Collection instance (INTERNAL TYPE, do not instantiate directly) * @class * @property {string} collectionName Get the collection name. * @property {string} namespace Get the full collection namespace. * @property {object} writeConcern The current write concern values. * @property {object} readConcern The current read concern values. * @property {object} hint Get current index hint for collection. * @return {Collection} a Collection instance. */ function Collection(db, topology, dbName, name, pkFactory, options) { checkCollectionName(name); // Unpack variables const internalHint = null; const slaveOk = options == null || options.slaveOk == null ? db.slaveOk : options.slaveOk; const serializeFunctions = options == null || options.serializeFunctions == null ? db.s.options.serializeFunctions : options.serializeFunctions; const raw = options == null || options.raw == null ? db.s.options.raw : options.raw; const promoteLongs = options == null || options.promoteLongs == null ? db.s.options.promoteLongs : options.promoteLongs; const promoteValues = options == null || options.promoteValues == null ? db.s.options.promoteValues : options.promoteValues; const promoteBuffers = options == null || options.promoteBuffers == null ? db.s.options.promoteBuffers : options.promoteBuffers; let readPreference = null; const collectionHint = null; const namespace = `${dbName}.${name}`; // Get the promiseLibrary const promiseLibrary = options.promiseLibrary || Promise; // Assign the right collection level readPreference if (options && options.readPreference) { readPreference = options.readPreference; } else if (db.options.readPreference) { readPreference = db.options.readPreference; } // Set custom primary key factory if provided pkFactory = pkFactory == null ? ObjectID : pkFactory; // Internal state this.s = { // Set custom primary key factory if provided pkFactory: pkFactory, // Db db: db, // Topology topology: topology, // dbName dbName: dbName, // Options options: options, // Namespace namespace: namespace, // Read preference readPreference: readPreference, // SlaveOK slaveOk: slaveOk, // Serialize functions serializeFunctions: serializeFunctions, // Raw raw: raw, // promoteLongs promoteLongs: promoteLongs, // promoteValues promoteValues: promoteValues, // promoteBuffers promoteBuffers: promoteBuffers, // internalHint internalHint: internalHint, // collectionHint collectionHint: collectionHint, // Name name: name, // Promise library promiseLibrary: promiseLibrary, // Read Concern readConcern: options.readConcern, // Write Concern writeConcern: options.writeConcern }; } Object.defineProperty(Collection.prototype, 'dbName', { enumerable: true, get: function() { return this.s.dbName; } }); Object.defineProperty(Collection.prototype, 'collectionName', { enumerable: true, get: function() { return this.s.name; } }); Object.defineProperty(Collection.prototype, 'namespace', { enumerable: true, get: function() { return this.s.namespace; } }); Object.defineProperty(Collection.prototype, 'readConcern', { enumerable: true, get: function() { return this.s.readConcern || { level: 'local' }; } }); Object.defineProperty(Collection.prototype, 'writeConcern', { enumerable: true, get: function() { let ops = {}; if (this.s.writeConcern) { return this.s.writeConcern; } if (this.s.options.w != null) ops.w = this.s.options.w; if (this.s.options.j != null) ops.j = this.s.options.j; if (this.s.options.fsync != null) ops.fsync = this.s.options.fsync; if (this.s.options.wtimeout != null) ops.wtimeout = this.s.options.wtimeout; return ops; } }); /** * @ignore */ Object.defineProperty(Collection.prototype, 'hint', { enumerable: true, get: function() { return this.s.collectionHint; }, set: function(v) { this.s.collectionHint = normalizeHintField(v); } }); const DEPRECATED_FIND_OPTIONS = ['maxScan', 'fields', 'snapshot']; /** * Creates a cursor for a query that can be used to iterate over results from MongoDB * @method * @param {object} [query={}] The cursor query object. * @param {object} [options] Optional settings. * @param {number} [options.limit=0] Sets the limit of documents returned in the query. * @param {(array|object)} [options.sort] Set to sort the documents coming back from the query. Array of indexes, [['a', 1]] etc. * @param {object} [options.projection] The fields to return in the query. Object of fields to include or exclude (not both), {'a':1} * @param {object} [options.fields] **Deprecated** Use `options.projection` instead * @param {number} [options.skip=0] Set to skip N documents ahead in your query (useful for pagination). * @param {Object} [options.hint] Tell the query to use specific indexes in the query. Object of indexes to use, {'_id':1} * @param {boolean} [options.explain=false] Explain the query instead of returning the data. * @param {boolean} [options.snapshot=false] DEPRECATED: Snapshot query. * @param {boolean} [options.timeout=false] Specify if the cursor can timeout. * @param {boolean} [options.tailable=false] Specify if the cursor is tailable. * @param {number} [options.batchSize=0] Set the batchSize for the getMoreCommand when iterating over the query results. * @param {boolean} [options.returnKey=false] Only return the index key. * @param {number} [options.maxScan] DEPRECATED: Limit the number of items to scan. * @param {number} [options.min] Set index bounds. * @param {number} [options.max] Set index bounds. * @param {boolean} [options.showDiskLoc=false] Show disk location of results. * @param {string} [options.comment] You can put a $comment field on a query to make looking in the profiler logs simpler. * @param {boolean} [options.raw=false] Return document results as raw BSON buffers. * @param {boolean} [options.promoteLongs=true] Promotes Long values to number if they fit inside the 53 bits resolution. * @param {boolean} [options.promoteValues=true] Promotes BSON values to native types where possible, set to false to only receive wrapper types. * @param {boolean} [options.promoteBuffers=false] Promotes Binary BSON values to native Node Buffers. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {boolean} [options.partial=false] Specify if the cursor should return partial results when querying against a sharded system * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {ClientSession} [options.session] optional session to use for this operation * @throws {MongoError} * @return {Cursor} */ Collection.prototype.find = deprecateOptions( { name: 'collection.find', deprecatedOptions: DEPRECATED_FIND_OPTIONS, optionsIndex: 1 }, function(query, options, callback) { if (typeof callback === 'object') { // TODO(MAJOR): throw in the future console.warn('Third parameter to `find()` must be a callback or undefined'); } let selector = query; // figuring out arguments if (typeof callback !== 'function') { if (typeof options === 'function') { callback = options; options = undefined; } else if (options == null) { callback = typeof selector === 'function' ? selector : undefined; selector = typeof selector === 'object' ? selector : undefined; } } // Ensure selector is not null selector = selector == null ? {} : selector; // Validate correctness off the selector const object = selector; if (Buffer.isBuffer(object)) { const object_size = object[0] | (object[1] << 8) | (object[2] << 16) | (object[3] << 24); if (object_size !== object.length) { const error = new Error( 'query selector raw message size does not match message header size [' + object.length + '] != [' + object_size + ']' ); error.name = 'MongoError'; throw error; } } // Check special case where we are using an objectId if (selector != null && selector._bsontype === 'ObjectID') { selector = { _id: selector }; } if (!options) options = {}; let projection = options.projection || options.fields; if (projection && !Buffer.isBuffer(projection) && Array.isArray(projection)) { projection = projection.length ? projection.reduce((result, field) => { result[field] = 1; return result; }, {}) : { _id: 1 }; } // Make a shallow copy of options let newOptions = Object.assign({}, options); // Make a shallow copy of the collection options for (let key in this.s.options) { if (mergeKeys.indexOf(key) !== -1) { newOptions[key] = this.s.options[key]; } } // Unpack options newOptions.skip = options.skip ? options.skip : 0; newOptions.limit = options.limit ? options.limit : 0; newOptions.raw = typeof options.raw === 'boolean' ? options.raw : this.s.raw; newOptions.hint = options.hint != null ? normalizeHintField(options.hint) : this.s.collectionHint; newOptions.timeout = typeof options.timeout === 'undefined' ? undefined : options.timeout; // // If we have overridden slaveOk otherwise use the default db setting newOptions.slaveOk = options.slaveOk != null ? options.slaveOk : this.s.db.slaveOk; // Add read preference if needed newOptions.readPreference = resolveReadPreference(newOptions, { db: this.s.db, collection: this }); // Set slave ok to true if read preference different from primary if ( newOptions.readPreference != null && (newOptions.readPreference !== 'primary' || newOptions.readPreference.mode !== 'primary') ) { newOptions.slaveOk = true; } // Ensure the query is an object if (selector != null && typeof selector !== 'object') { throw MongoError.create({ message: 'query selector must be an object', driver: true }); } // Build the find command const findCommand = { find: this.s.namespace, limit: newOptions.limit, skip: newOptions.skip, query: selector }; // Ensure we use the right await data option if (typeof newOptions.awaitdata === 'boolean') { newOptions.awaitData = newOptions.awaitdata; } // Translate to new command option noCursorTimeout if (typeof newOptions.timeout === 'boolean') newOptions.noCursorTimeout = newOptions.timeout; decorateCommand(findCommand, newOptions, ['session', 'collation']); if (projection) findCommand.fields = projection; // Add db object to the new options newOptions.db = this.s.db; // Add the promise library newOptions.promiseLibrary = this.s.promiseLibrary; // Set raw if available at collection level if (newOptions.raw == null && typeof this.s.raw === 'boolean') newOptions.raw = this.s.raw; // Set promoteLongs if available at collection level if (newOptions.promoteLongs == null && typeof this.s.promoteLongs === 'boolean') newOptions.promoteLongs = this.s.promoteLongs; if (newOptions.promoteValues == null && typeof this.s.promoteValues === 'boolean') newOptions.promoteValues = this.s.promoteValues; if (newOptions.promoteBuffers == null && typeof this.s.promoteBuffers === 'boolean') newOptions.promoteBuffers = this.s.promoteBuffers; // Sort options if (findCommand.sort) { findCommand.sort = formattedOrderClause(findCommand.sort); } // Set the readConcern decorateWithReadConcern(findCommand, this, options); // Decorate find command with collation options try { decorateWithCollation(findCommand, this, options); } catch (err) { if (typeof callback === 'function') return callback(err, null); throw err; } const cursor = this.s.topology.cursor(this.s.namespace, findCommand, newOptions); return typeof callback === 'function' ? handleCallback(callback, null, cursor) : cursor; } ); /** * Inserts a single document into MongoDB. If documents passed in do not contain the **_id** field, * one will be added to each of the documents missing it by the driver, mutating the document. This behavior * can be overridden by setting the **forceServerObjectId** flag. * * @method * @param {object} doc Document to insert. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.serializeFunctions=false] Serialize functions on any object. * @param {boolean} [options.forceServerObjectId=false] Force server to assign _id values instead of driver. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~insertOneWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.insertOne = function(doc, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, insertOne, [this, doc, options, callback]); }; function mapInsertManyResults(docs, r) { const finalResult = { result: { ok: 1, n: r.insertedCount }, ops: docs, insertedCount: r.insertedCount, insertedIds: r.insertedIds }; if (r.getLastOp()) { finalResult.result.opTime = r.getLastOp(); } return finalResult; } /** * Inserts an array of documents into MongoDB. If documents passed in do not contain the **_id** field, * one will be added to each of the documents missing it by the driver, mutating the document. This behavior * can be overridden by setting the **forceServerObjectId** flag. * * @method * @param {object[]} docs Documents to insert. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.serializeFunctions=false] Serialize functions on any object. * @param {boolean} [options.forceServerObjectId=false] Force server to assign _id values instead of driver. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {boolean} [options.ordered=true] If true, when an insert fails, don't execute the remaining writes. If false, continue with remaining inserts when one fails. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~insertWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.insertMany = function(docs, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options ? Object.assign({}, options) : { ordered: true }; if (!Array.isArray(docs) && typeof callback === 'function') { return callback( MongoError.create({ message: 'docs parameter must be an array of documents', driver: true }) ); } else if (!Array.isArray(docs)) { return new this.s.promiseLibrary((resolve, reject) => { reject( MongoError.create({ message: 'docs parameter must be an array of documents', driver: true }) ); }); } // If keep going set unordered options['serializeFunctions'] = options['serializeFunctions'] || this.s.serializeFunctions; docs = prepareDocs(this, docs, options); // Generate the bulk write operations const operations = [ { insertMany: docs } ]; return executeOperation(this.s.topology, bulkWrite, [this, operations, options, callback], { resultMutator: result => mapInsertManyResults(docs, result) }); }; /** * @typedef {Object} Collection~BulkWriteOpResult * @property {number} insertedCount Number of documents inserted. * @property {number} matchedCount Number of documents matched for update. * @property {number} modifiedCount Number of documents modified. * @property {number} deletedCount Number of documents deleted. * @property {number} upsertedCount Number of documents upserted. * @property {object} insertedIds Inserted document generated Id's, hash key is the index of the originating operation * @property {object} upsertedIds Upserted document generated Id's, hash key is the index of the originating operation * @property {object} result The command result object. */ /** * The callback format for inserts * @callback Collection~bulkWriteOpCallback * @param {BulkWriteError} error An error instance representing the error during the execution. * @param {Collection~BulkWriteOpResult} result The result object if the command was executed successfully. */ /** * Perform a bulkWrite operation without a fluent API * * Legal operation types are * * { insertOne: { document: { a: 1 } } } * * { updateOne: { filter: {a:2}, update: {$set: {a:2}}, upsert:true } } * * { updateMany: { filter: {a:2}, update: {$set: {a:2}}, upsert:true } } * * { deleteOne: { filter: {c:1} } } * * { deleteMany: { filter: {c:1} } } * * { replaceOne: { filter: {c:3}, replacement: {c:4}, upsert:true}} * * If documents passed in do not contain the **_id** field, * one will be added to each of the documents missing it by the driver, mutating the document. This behavior * can be overridden by setting the **forceServerObjectId** flag. * * @method * @param {object[]} operations Bulk operations to perform. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.serializeFunctions=false] Serialize functions on any object. * @param {boolean} [options.ordered=true] Execute write operation in ordered or unordered fashion. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~bulkWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.bulkWrite = function(operations, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || { ordered: true }; if (!Array.isArray(operations)) { throw MongoError.create({ message: 'operations must be an array of documents', driver: true }); } return executeOperation(this.s.topology, bulkWrite, [this, operations, options, callback]); }; /** * @typedef {Object} Collection~WriteOpResult * @property {object[]} ops All the documents inserted using insertOne/insertMany/replaceOne. Documents contain the _id field if forceServerObjectId == false for insertOne/insertMany * @property {object} connection The connection object used for the operation. * @property {object} result The command result object. */ /** * The callback format for inserts * @callback Collection~writeOpCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~WriteOpResult} result The result object if the command was executed successfully. */ /** * @typedef {Object} Collection~insertWriteOpResult * @property {Number} insertedCount The total amount of documents inserted. * @property {object[]} ops All the documents inserted using insertOne/insertMany/replaceOne. Documents contain the _id field if forceServerObjectId == false for insertOne/insertMany * @property {Object.} insertedIds Map of the index of the inserted document to the id of the inserted document. * @property {object} connection The connection object used for the operation. * @property {object} result The raw command result object returned from MongoDB (content might vary by server version). * @property {Number} result.ok Is 1 if the command executed correctly. * @property {Number} result.n The total count of documents inserted. */ /** * @typedef {Object} Collection~insertOneWriteOpResult * @property {Number} insertedCount The total amount of documents inserted. * @property {object[]} ops All the documents inserted using insertOne/insertMany/replaceOne. Documents contain the _id field if forceServerObjectId == false for insertOne/insertMany * @property {ObjectId} insertedId The driver generated ObjectId for the insert operation. * @property {object} connection The connection object used for the operation. * @property {object} result The raw command result object returned from MongoDB (content might vary by server version). * @property {Number} result.ok Is 1 if the command executed correctly. * @property {Number} result.n The total count of documents inserted. */ /** * The callback format for inserts * @callback Collection~insertWriteOpCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~insertWriteOpResult} result The result object if the command was executed successfully. */ /** * The callback format for inserts * @callback Collection~insertOneWriteOpCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~insertOneWriteOpResult} result The result object if the command was executed successfully. */ /** * Inserts a single document or a an array of documents into MongoDB. If documents passed in do not contain the **_id** field, * one will be added to each of the documents missing it by the driver, mutating the document. This behavior * can be overridden by setting the **forceServerObjectId** flag. * * @method * @param {(object|object[])} docs Documents to insert. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.serializeFunctions=false] Serialize functions on any object. * @param {boolean} [options.forceServerObjectId=false] Force server to assign _id values instead of driver. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~insertWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated Use insertOne, insertMany or bulkWrite */ Collection.prototype.insert = deprecate(function(docs, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || { ordered: false }; docs = !Array.isArray(docs) ? [docs] : docs; if (options.keepGoing === true) { options.ordered = false; } return this.insertMany(docs, options, callback); }, 'collection.insert is deprecated. Use insertOne, insertMany or bulkWrite instead.'); /** * @typedef {Object} Collection~updateWriteOpResult * @property {Object} result The raw result returned from MongoDB. Will vary depending on server version. * @property {Number} result.ok Is 1 if the command executed correctly. * @property {Number} result.n The total count of documents scanned. * @property {Number} result.nModified The total count of documents modified. * @property {Object} connection The connection object used for the operation. * @property {Number} matchedCount The number of documents that matched the filter. * @property {Number} modifiedCount The number of documents that were modified. * @property {Number} upsertedCount The number of documents upserted. * @property {Object} upsertedId The upserted id. * @property {ObjectId} upsertedId._id The upserted _id returned from the server. * @property {Object} message * @property {Array} ops */ /** * The callback format for inserts * @callback Collection~updateWriteOpCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~updateWriteOpResult} result The result object if the command was executed successfully. */ /** * Update a single document in a collection * @method * @param {object} filter The Filter used to select the document to update * @param {object} update The update operations to be applied to the document * @param {object} [options] Optional settings. * @param {boolean} [options.upsert=false] Update operation is an upsert. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {Array} [options.arrayFilters] optional list of array filters referenced in filtered positional operators * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~updateWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.updateOne = function(filter, update, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; const err = checkForAtomicOperators(update); if (err) { if (typeof callback === 'function') return callback(err); return this.s.promiseLibrary.reject(err); } options = Object.assign({}, options); // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, updateOne, [this, filter, update, options, callback]); }; /** * Replace a document in a collection with another document * @method * @param {object} filter The Filter used to select the document to replace * @param {object} doc The Document that replaces the matching document * @param {object} [options] Optional settings. * @param {boolean} [options.upsert=false] Update operation is an upsert. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~updateWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.replaceOne = function(filter, doc, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = Object.assign({}, options); // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, replaceOne, [this, filter, doc, options, callback]); }; /** * Update multiple documents in a collection * @method * @param {object} filter The Filter used to select the documents to update * @param {object} update The update operations to be applied to the documents * @param {object} [options] Optional settings. * @param {boolean} [options.upsert=false] Update operation is an upsert. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {Array} [options.arrayFilters] optional list of array filters referenced in filtered positional operators * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~updateWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.updateMany = function(filter, update, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; const err = checkForAtomicOperators(update); if (err) { if (typeof callback === 'function') return callback(err); return this.s.promiseLibrary.reject(err); } options = Object.assign({}, options); // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, updateMany, [this, filter, update, options, callback]); }; /** * Updates documents. * @method * @param {object} selector The selector for the update operation. * @param {object} document The update document. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.upsert=false] Update operation is an upsert. * @param {boolean} [options.multi=false] Update one/all documents with operation. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {Array} [options.arrayFilters] optional list of array filters referenced in filtered positional operators * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~writeOpCallback} [callback] The command result callback * @throws {MongoError} * @return {Promise} returns Promise if no callback passed * @deprecated use updateOne, updateMany or bulkWrite */ Collection.prototype.update = deprecate(function(selector, document, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, updateDocuments, [ this, selector, document, options, callback ]); }, 'collection.update is deprecated. Use updateOne, updateMany, or bulkWrite instead.'); /** * @typedef {Object} Collection~deleteWriteOpResult * @property {Object} result The raw result returned from MongoDB. Will vary depending on server version. * @property {Number} result.ok Is 1 if the command executed correctly. * @property {Number} result.n The total count of documents deleted. * @property {Object} connection The connection object used for the operation. * @property {Number} deletedCount The number of documents deleted. */ /** * The callback format for inserts * @callback Collection~deleteWriteOpCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~deleteWriteOpResult} result The result object if the command was executed successfully. */ /** * Delete a document from a collection * @method * @param {object} filter The Filter used to select the document to remove * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~deleteWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.deleteOne = function(filter, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = Object.assign({}, options); // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, deleteOne, [this, filter, options, callback]); }; Collection.prototype.removeOne = Collection.prototype.deleteOne; /** * Delete multiple documents from a collection * @method * @param {object} filter The Filter used to select the documents to remove * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~deleteWriteOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.deleteMany = function(filter, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = Object.assign({}, options); // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, deleteMany, [this, filter, options, callback]); }; Collection.prototype.removeMany = Collection.prototype.deleteMany; /** * Remove documents. * @method * @param {object} selector The selector for the update operation. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.single=false] Removes the first document found. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~writeOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated use deleteOne, deleteMany or bulkWrite */ Collection.prototype.remove = deprecate(function(selector, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, removeDocuments, [this, selector, options, callback]); }, 'collection.remove is deprecated. Use deleteOne, deleteMany, or bulkWrite instead.'); /** * Save a document. Simple full document replacement function. Not recommended for efficiency, use atomic * operators and update instead for more efficient operations. * @method * @param {object} doc Document to save * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~writeOpCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated use insertOne, insertMany, updateOne or updateMany */ Collection.prototype.save = deprecate(function(doc, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Add ignoreUndfined if (this.s.options.ignoreUndefined) { options = Object.assign({}, options); options.ignoreUndefined = this.s.options.ignoreUndefined; } return executeOperation(this.s.topology, save, [this, doc, options, callback]); }, 'collection.save is deprecated. Use insertOne, insertMany, updateOne, or updateMany instead.'); /** * The callback format for results * @callback Collection~resultCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {object} result The result object if the command was executed successfully. */ /** * The callback format for an aggregation call * @callback Collection~aggregationCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {AggregationCursor} cursor The cursor if the aggregation command was executed successfully. */ /** * Fetches the first document that matches the query * @method * @param {object} query Query for find Operation * @param {object} [options] Optional settings. * @param {number} [options.limit=0] Sets the limit of documents returned in the query. * @param {(array|object)} [options.sort] Set to sort the documents coming back from the query. Array of indexes, [['a', 1]] etc. * @param {object} [options.projection] The fields to return in the query. Object of fields to include or exclude (not both), {'a':1} * @param {object} [options.fields] **Deprecated** Use `options.projection` instead * @param {number} [options.skip=0] Set to skip N documents ahead in your query (useful for pagination). * @param {Object} [options.hint] Tell the query to use specific indexes in the query. Object of indexes to use, {'_id':1} * @param {boolean} [options.explain=false] Explain the query instead of returning the data. * @param {boolean} [options.snapshot=false] DEPRECATED: Snapshot query. * @param {boolean} [options.timeout=false] Specify if the cursor can timeout. * @param {boolean} [options.tailable=false] Specify if the cursor is tailable. * @param {number} [options.batchSize=0] Set the batchSize for the getMoreCommand when iterating over the query results. * @param {boolean} [options.returnKey=false] Only return the index key. * @param {number} [options.maxScan] DEPRECATED: Limit the number of items to scan. * @param {number} [options.min] Set index bounds. * @param {number} [options.max] Set index bounds. * @param {boolean} [options.showDiskLoc=false] Show disk location of results. * @param {string} [options.comment] You can put a $comment field on a query to make looking in the profiler logs simpler. * @param {boolean} [options.raw=false] Return document results as raw BSON buffers. * @param {boolean} [options.promoteLongs=true] Promotes Long values to number if they fit inside the 53 bits resolution. * @param {boolean} [options.promoteValues=true] Promotes BSON values to native types where possible, set to false to only receive wrapper types. * @param {boolean} [options.promoteBuffers=false] Promotes Binary BSON values to native Node Buffers. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {boolean} [options.partial=false] Specify if the cursor should return partial results when querying against a sharded system * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.findOne = deprecateOptions( { name: 'collection.find', deprecatedOptions: DEPRECATED_FIND_OPTIONS, optionsIndex: 1 }, function(query, options, callback) { if (typeof callback === 'object') { // TODO(MAJOR): throw in the future console.warn('Third parameter to `findOne()` must be a callback or undefined'); } if (typeof query === 'function') (callback = query), (query = {}), (options = {}); if (typeof options === 'function') (callback = options), (options = {}); query = query || {}; options = options || {}; return executeOperation(this.s.topology, findOne, [this, query, options, callback]); } ); /** * The callback format for the collection method, must be used if strict is specified * @callback Collection~collectionResultCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection} collection The collection instance. */ /** * Rename the collection. * * @method * @param {string} newName New name of of the collection. * @param {object} [options] Optional settings. * @param {boolean} [options.dropTarget=false] Drop the target name collection if it previously exists. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~collectionResultCallback} [callback] The results callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.rename = function(newName, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = Object.assign({}, options, { readPreference: ReadPreference.PRIMARY }); return executeOperation(this.s.topology, rename, [this, newName, options, callback]); }; /** * Drop the collection from the database, removing it permanently. New accesses will create a new collection. * * @method * @param {object} [options] Optional settings. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The results callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.drop = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, this.s.db.dropCollection.bind(this.s.db), [ this.s.name, options, callback ]); }; /** * Returns the options of the collection. * * @method * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The results callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.options = function(opts, callback) { if (typeof opts === 'function') (callback = opts), (opts = {}); opts = opts || {}; return executeOperation(this.s.topology, optionsOp, [this, opts, callback]); }; /** * Returns if the collection is a capped collection * * @method * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The results callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.isCapped = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, isCapped, [this, options, callback]); }; /** * Creates an index on the db and collection collection. * @method * @param {(string|object)} fieldOrSpec Defines the index. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.unique=false] Creates an unique index. * @param {boolean} [options.sparse=false] Creates a sparse index. * @param {boolean} [options.background=false] Creates the index in the background, yielding whenever possible. * @param {boolean} [options.dropDups=false] A unique index cannot be created on a key that has pre-existing duplicate values. If you would like to create the index anyway, keeping the first document the database indexes and deleting all subsequent documents that have duplicate value * @param {number} [options.min] For geospatial indexes set the lower bound for the co-ordinates. * @param {number} [options.max] For geospatial indexes set the high bound for the co-ordinates. * @param {number} [options.v] Specify the format version of the indexes. * @param {number} [options.expireAfterSeconds] Allows you to expire data on indexes applied to a data (MongoDB 2.2 or higher) * @param {string} [options.name] Override the autogenerated index name (useful if the resulting name is larger than 128 bytes) * @param {object} [options.partialFilterExpression] Creates a partial index based on the given filter object (MongoDB 3.2 or higher) * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.createIndex = function(fieldOrSpec, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, createIndex, [this, fieldOrSpec, options, callback]); }; /** * 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/. * @method * @param {array} indexSpecs An array of index specifications to be created * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.createIndexes = function(indexSpecs, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options ? Object.assign({}, options) : {}; if (typeof options.maxTimeMS !== 'number') delete options.maxTimeMS; return executeOperation(this.s.topology, createIndexes, [this, indexSpecs, options, callback]); }; /** * Drops an index from this collection. * @method * @param {string} indexName Name of the index to drop. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.dropIndex = function(indexName, options, callback) { const args = Array.prototype.slice.call(arguments, 1); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; options = args.length ? args.shift() || {} : {}; // Run only against primary options.readPreference = ReadPreference.PRIMARY; return executeOperation(this.s.topology, dropIndex, [this, indexName, options, callback]); }; /** * Drops all indexes from this collection. * @method * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.dropIndexes = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options ? Object.assign({}, options) : {}; if (typeof options.maxTimeMS !== 'number') delete options.maxTimeMS; return executeOperation(this.s.topology, dropIndexes, [this, options, callback]); }; /** * Drops all indexes from this collection. * @method * @deprecated use dropIndexes * @param {Collection~resultCallback} callback The command result callback * @return {Promise} returns Promise if no [callback] passed */ Collection.prototype.dropAllIndexes = deprecate( Collection.prototype.dropIndexes, 'collection.dropAllIndexes is deprecated. Use dropIndexes instead.' ); /** * 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. * @method * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.reIndex = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, reIndex, [this, options, callback]); }; /** * Get the list of all indexes information for the collection. * * @method * @param {object} [options] Optional settings. * @param {number} [options.batchSize] The batchSize for the returned command cursor or if pre 2.8 the systems batch collection * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {ClientSession} [options.session] optional session to use for this operation * @return {CommandCursor} */ Collection.prototype.listIndexes = function(options) { options = options || {}; // Clone the options options = Object.assign({}, options); // Determine the read preference in the options. options.readPreference = resolveReadPreference(options, { db: this.s.db, collection: this }); // Set the CommandCursor constructor options.cursorFactory = CommandCursor; // Set the promiseLibrary options.promiseLibrary = this.s.promiseLibrary; if (!this.s.topology.capabilities()) { throw new MongoError('cannot connect to server'); } // Cursor options let cursor = options.batchSize ? { batchSize: options.batchSize } : {}; // We have a list collections command if (this.s.topology.capabilities().hasListIndexesCommand) { // Build the command const command = { listIndexes: this.s.name, cursor: cursor }; // Execute the cursor cursor = this.s.topology.cursor(`${this.s.dbName}.$cmd`, command, options); // Do we have a readPreference, apply it if (options.readPreference) cursor.setReadPreference(options.readPreference); // Return the cursor return cursor; } // Get the namespace const ns = `${this.s.dbName}.system.indexes`; // Get the query cursor = this.s.topology.cursor(ns, { find: ns, query: { ns: this.s.namespace } }, options); // Do we have a readPreference, apply it if (options.readPreference) cursor.setReadPreference(options.readPreference); // Set the passed in batch size if one was provided if (options.batchSize) cursor = cursor.batchSize(options.batchSize); // Return the cursor return cursor; }; /** * Ensures that an index exists, if it does not it creates it * @method * @deprecated use createIndexes instead * @param {(string|object)} fieldOrSpec Defines the index. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.unique=false] Creates an unique index. * @param {boolean} [options.sparse=false] Creates a sparse index. * @param {boolean} [options.background=false] Creates the index in the background, yielding whenever possible. * @param {boolean} [options.dropDups=false] A unique index cannot be created on a key that has pre-existing duplicate values. If you would like to create the index anyway, keeping the first document the database indexes and deleting all subsequent documents that have duplicate value * @param {number} [options.min] For geospatial indexes set the lower bound for the co-ordinates. * @param {number} [options.max] For geospatial indexes set the high bound for the co-ordinates. * @param {number} [options.v] Specify the format version of the indexes. * @param {number} [options.expireAfterSeconds] Allows you to expire data on indexes applied to a data (MongoDB 2.2 or higher) * @param {number} [options.name] Override the autogenerated index name (useful if the resulting name is larger than 128 bytes) * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.ensureIndex = deprecate(function(fieldOrSpec, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, ensureIndex, [this, fieldOrSpec, options, callback]); }, 'collection.ensureIndex is deprecated. Use createIndexes instead.'); /** * Checks if one or more indexes exist on the collection, fails on first non-existing index * @method * @param {(string|array)} indexes One or more index names to check. * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.indexExists = function(indexes, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, indexExists, [this, indexes, options, callback]); }; /** * Retrieves this collections index info. * @method * @param {object} [options] Optional settings. * @param {boolean} [options.full=false] Returns the full raw index information. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.indexInformation = function(options, callback) { const args = Array.prototype.slice.call(arguments, 0); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, indexInformation, [this, options, callback]); }; /** * The callback format for results * @callback Collection~countCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {number} result The count of documents that matched the query. */ /** * Count number of matching documents in the db to a query. * @method * @param {object} [query={}] The query for the count. * @param {object} [options] Optional settings. * @param {boolean} [options.limit] The limit of documents to count. * @param {boolean} [options.skip] The number of documents to skip for the count. * @param {string} [options.hint] An index name hint for the query. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~countCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated use {@link Collection#countDocuments countDocuments} or {@link Collection#estimatedDocumentCount estimatedDocumentCount} instead */ Collection.prototype.count = deprecate(function(query, options, callback) { const args = Array.prototype.slice.call(arguments, 0); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; query = args.length ? args.shift() || {} : {}; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, count, [this, query, options, callback]); }, 'collection.count is deprecated, and will be removed in a future version.' + ' Use collection.countDocuments or collection.estimatedDocumentCount instead'); /** * Gets an estimate of the count of documents in a collection using collection metadata. * * @method * @param {object} [options] Optional settings. * @param {number} [options.maxTimeMS] The maximum amount of time to allow the operation to run. * @param {Collection~countCallback} [callback] The command result callback. * @return {Promise} returns Promise if no callback passed. */ Collection.prototype.estimatedDocumentCount = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, count, [this, null, options, callback]); }; /** * Gets the number of documents matching the filter. * * **Note**: When migrating from {@link Collection#count count} to {@link Collection#countDocuments countDocuments} * the following query operators must be replaced: * * | Operator | Replacement | * | -------- | ----------- | * | `$where` | [`$expr`][1] | * | `$near` | [`$geoWithin`][2] with [`$center`][3] | * | `$nearSphere` | [`$geoWithin`][2] with [`$centerSphere`][4] | * * [1]: https://docs.mongodb.com/manual/reference/operator/query/expr/ * [2]: https://docs.mongodb.com/manual/reference/operator/query/geoWithin/ * [3]: https://docs.mongodb.com/manual/reference/operator/query/center/#op._S_center * [4]: https://docs.mongodb.com/manual/reference/operator/query/centerSphere/#op._S_centerSphere * * @param {object} [query] the query for the count * @param {object} [options] Optional settings. * @param {object} [options.collation] Specifies a collation. * @param {string|object} [options.hint] The index to use. * @param {number} [options.limit] The maximum number of document to count. * @param {number} [options.maxTimeMS] The maximum amount of time to allow the operation to run. * @param {number} [options.skip] The number of documents to skip before counting. * @param {Collection~countCallback} [callback] The command result callback. * @return {Promise} returns Promise if no callback passed. * @see https://docs.mongodb.com/manual/reference/operator/query/expr/ * @see https://docs.mongodb.com/manual/reference/operator/query/geoWithin/ * @see https://docs.mongodb.com/manual/reference/operator/query/center/#op._S_center * @see https://docs.mongodb.com/manual/reference/operator/query/centerSphere/#op._S_centerSphere */ Collection.prototype.countDocuments = function(query, options, callback) { const args = Array.prototype.slice.call(arguments, 0); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; query = args.length ? args.shift() || {} : {}; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, countDocuments, [this, query, options, callback]); }; /** * The distinct command returns returns a list of distinct values for the given key across a collection. * @method * @param {string} key Field of the document to find distinct values for. * @param {object} query The query for filtering the set of documents to which we apply the distinct filter. * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {number} [options.maxTimeMS] Number of miliseconds to wait before aborting the query. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.distinct = function(key, query, options, callback) { const args = Array.prototype.slice.call(arguments, 1); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; const queryOption = args.length ? args.shift() || {} : {}; const optionsOption = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, distinct, [ this, key, queryOption, optionsOption, callback ]); }; /** * Retrieve all the indexes on the collection. * @method * @param {Object} [options] Optional settings * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.indexes = function(options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; return executeOperation(this.s.topology, indexes, [this, options, callback]); }; /** * Get all the collection statistics. * * @method * @param {object} [options] Optional settings. * @param {number} [options.scale] Divide the returned sizes by scale value. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The collection result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.stats = function(options, callback) { const args = Array.prototype.slice.call(arguments, 0); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, stats, [this, options, callback]); }; /** * @typedef {Object} Collection~findAndModifyWriteOpResult * @property {object} value Document returned from findAndModify command. * @property {object} lastErrorObject The raw lastErrorObject returned from the command. * @property {Number} ok Is 1 if the command executed correctly. */ /** * The callback format for inserts * @callback Collection~findAndModifyCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Collection~findAndModifyWriteOpResult} result The result object if the command was executed successfully. */ /** * Find a document and delete it in one atomic operation. Requires a write lock for the duration of the operation. * * @method * @param {object} filter The Filter used to select the document to remove * @param {object} [options] Optional settings. * @param {object} [options.projection] Limits the fields to return for all matching documents. * @param {object} [options.sort] Determines which document the operation modifies if the query selects multiple documents. * @param {number} [options.maxTimeMS] The maximum amount of time to allow the query to run. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~findAndModifyCallback} [callback] The collection result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.findOneAndDelete = function(filter, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Basic validation if (filter == null || typeof filter !== 'object') throw toError('filter parameter must be an object'); return executeOperation(this.s.topology, findOneAndDelete, [this, filter, options, callback]); }; /** * Find a document and replace it in one atomic operation. Requires a write lock for the duration of the operation. * * @method * @param {object} filter The Filter used to select the document to replace * @param {object} replacement The Document that replaces the matching document * @param {object} [options] Optional settings. * @param {object} [options.projection] Limits the fields to return for all matching documents. * @param {object} [options.sort] Determines which document the operation modifies if the query selects multiple documents. * @param {number} [options.maxTimeMS] The maximum amount of time to allow the query to run. * @param {boolean} [options.upsert=false] Upsert the document if it does not exist. * @param {boolean} [options.returnOriginal=true] When false, returns the updated document rather than the original. The default is true. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~findAndModifyCallback} [callback] The collection result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.findOneAndReplace = function(filter, replacement, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Basic validation if (filter == null || typeof filter !== 'object') throw toError('filter parameter must be an object'); if (replacement == null || typeof replacement !== 'object') throw toError('replacement parameter must be an object'); return executeOperation(this.s.topology, findOneAndReplace, [ this, filter, replacement, options, callback ]); }; /** * Find a document and update it in one atomic operation. Requires a write lock for the duration of the operation. * * @method * @param {object} filter The Filter used to select the document to update * @param {object} update Update operations to be performed on the document * @param {object} [options] Optional settings. * @param {object} [options.projection] Limits the fields to return for all matching documents. * @param {object} [options.sort] Determines which document the operation modifies if the query selects multiple documents. * @param {number} [options.maxTimeMS] The maximum amount of time to allow the query to run. * @param {boolean} [options.upsert=false] Upsert the document if it does not exist. * @param {boolean} [options.returnOriginal=true] When false, returns the updated document rather than the original. The default is true. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Array} [options.arrayFilters] optional list of array filters referenced in filtered positional operators * @param {Collection~findAndModifyCallback} [callback] The collection result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.findOneAndUpdate = function(filter, update, options, callback) { if (typeof options === 'function') (callback = options), (options = {}); options = options || {}; // Basic validation if (filter == null || typeof filter !== 'object') throw toError('filter parameter must be an object'); if (update == null || typeof update !== 'object') throw toError('update parameter must be an object'); const err = checkForAtomicOperators(update); if (err) { if (typeof callback === 'function') return callback(err); return this.s.promiseLibrary.reject(err); } return executeOperation(this.s.topology, findOneAndUpdate, [ this, filter, update, options, callback ]); }; /** * Find and update a document. * @method * @param {object} query Query object to locate the object to modify. * @param {array} sort If multiple docs match, choose the first one in the specified sort order as the object to manipulate. * @param {object} doc The fields/vals to be updated. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {boolean} [options.remove=false] Set to true to remove the object before returning. * @param {boolean} [options.upsert=false] Perform an upsert operation. * @param {boolean} [options.new=false] Set to true if you want to return the modified object rather than the original. Ignored for remove. * @param {object} [options.projection] Object containing the field projection for the result returned from the operation. * @param {object} [options.fields] **Deprecated** Use `options.projection` instead * @param {ClientSession} [options.session] optional session to use for this operation * @param {Array} [options.arrayFilters] optional list of array filters referenced in filtered positional operators * @param {Collection~findAndModifyCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated use findOneAndUpdate, findOneAndReplace or findOneAndDelete instead */ Collection.prototype.findAndModify = deprecate(function(query, sort, doc, options, callback) { const args = Array.prototype.slice.call(arguments, 1); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; sort = args.length ? args.shift() || [] : []; doc = args.length ? args.shift() : null; options = args.length ? args.shift() || {} : {}; // Clone options options = Object.assign({}, options); // Force read preference primary options.readPreference = ReadPreference.PRIMARY; return executeOperation(this.s.topology, findAndModify, [ this, query, sort, doc, options, callback ]); }, 'collection.findAndModify is deprecated. Use findOneAndUpdate, findOneAndReplace or findOneAndDelete instead.'); /** * Find and remove a document. * @method * @param {object} query Query object to locate the object to modify. * @param {array} sort If multiple docs match, choose the first one in the specified sort order as the object to manipulate. * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated use findOneAndDelete instead */ Collection.prototype.findAndRemove = deprecate(function(query, sort, options, callback) { const args = Array.prototype.slice.call(arguments, 1); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; sort = args.length ? args.shift() || [] : []; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, findAndRemove, [this, query, sort, options, callback]); }, 'collection.findAndRemove is deprecated. Use findOneAndDelete instead.'); /** * Execute an aggregation framework pipeline against the collection, needs MongoDB >= 2.2 * @method * @param {object} [pipeline=[]] Array containing all the aggregation framework commands for the execution. * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {object} [options.cursor] Return the query as cursor, on 2.6 > it returns as a real cursor on pre 2.6 it returns as an emulated cursor. * @param {number} [options.cursor.batchSize] The batchSize for the cursor * @param {boolean} [options.explain=false] Explain returns the aggregation execution plan (requires mongodb 2.6 >). * @param {boolean} [options.allowDiskUse=false] allowDiskUse lets the server know if it can use disk to store temporary results for the aggregation (requires mongodb 2.6 >). * @param {number} [options.maxTimeMS] maxTimeMS specifies a cumulative time limit in milliseconds for processing operations on the cursor. MongoDB interrupts the operation at the earliest following interrupt point. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {boolean} [options.raw=false] Return document results as raw BSON buffers. * @param {boolean} [options.promoteLongs=true] Promotes Long values to number if they fit inside the 53 bits resolution. * @param {boolean} [options.promoteValues=true] Promotes BSON values to native types where possible, set to false to only receive wrapper types. * @param {boolean} [options.promoteBuffers=false] Promotes Binary BSON values to native Node Buffers. * @param {object} [options.collation] Specify collation (MongoDB 3.4 or higher) settings for update operation (see 3.4 documentation for available fields). * @param {string} [options.comment] Add a comment to an aggregation command * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~aggregationCallback} callback The command result callback * @return {(null|AggregationCursor)} */ Collection.prototype.aggregate = function(pipeline, options, callback) { if (Array.isArray(pipeline)) { // Set up callback if one is provided if (typeof options === 'function') { callback = options; options = {}; } // If we have no options or callback we are doing // a cursor based aggregation if (options == null && callback == null) { options = {}; } } else { // Aggregation pipeline passed as arguments on the method const args = Array.prototype.slice.call(arguments, 0); // Get the callback callback = args.pop(); // Get the possible options object const opts = args[args.length - 1]; // If it contains any of the admissible options pop it of the args options = opts && (opts.readPreference || opts.explain || opts.cursor || opts.out || opts.maxTimeMS || opts.hint || opts.allowDiskUse) ? args.pop() : {}; // Left over arguments is the pipeline pipeline = args; } // Ignore readConcern option let ignoreReadConcern = false; // Build the command const command = { aggregate: this.s.name, pipeline: pipeline }; // If out was specified if (typeof options.out === 'string') { pipeline.push({ $out: options.out }); // Ignore read concern ignoreReadConcern = true; } else if (pipeline.length > 0 && pipeline[pipeline.length - 1]['$out']) { ignoreReadConcern = true; } // Decorate command with writeConcern if out has been specified if ( pipeline.length > 0 && pipeline[pipeline.length - 1]['$out'] && this.s.topology.capabilities().commandsTakeWriteConcern ) { applyWriteConcern(command, { db: this.s.db, collection: this }, options); } // Have we specified collation try { decorateWithCollation(command, this, options); } catch (err) { if (typeof callback === 'function') return callback(err, null); throw err; } // If we have bypassDocumentValidation set if (options.bypassDocumentValidation === true) { command.bypassDocumentValidation = options.bypassDocumentValidation; } // Do we have a readConcern specified if (!ignoreReadConcern) { decorateWithReadConcern(command, this, options); } // If we have allowDiskUse defined if (options.allowDiskUse) command.allowDiskUse = options.allowDiskUse; if (typeof options.maxTimeMS === 'number') command.maxTimeMS = options.maxTimeMS; // If we are giving a hint if (options.hint) command.hint = options.hint; options = Object.assign({}, options); // Ensure we have the right read preference inheritance options.readPreference = resolveReadPreference(options, { db: this.s.db, collection: this }); // If explain has been specified add it if (options.explain) { if (command.readConcern || command.writeConcern) { throw toError('"explain" cannot be used on an aggregate call with readConcern/writeConcern'); } command.explain = options.explain; } if (typeof options.comment === 'string') command.comment = options.comment; // Validate that cursor options is valid if (options.cursor != null && typeof options.cursor !== 'object') { throw toError('cursor options must be an object'); } options.cursor = options.cursor || {}; if (options.batchSize) options.cursor.batchSize = options.batchSize; command.cursor = options.cursor; // promiseLibrary options.promiseLibrary = this.s.promiseLibrary; // Set the AggregationCursor constructor options.cursorFactory = AggregationCursor; if (typeof callback !== 'function') { if (!this.s.topology.capabilities()) { throw new MongoError('cannot connect to server'); } // Allow disk usage command if (typeof options.allowDiskUse === 'boolean') command.allowDiskUse = options.allowDiskUse; if (typeof options.maxTimeMS === 'number') command.maxTimeMS = options.maxTimeMS; // Execute the cursor return this.s.topology.cursor(this.s.namespace, command, options); } return handleCallback(callback, null, this.s.topology.cursor(this.s.namespace, command, options)); }; /** * Create a new Change Stream, watching for new changes (insertions, updates, replacements, deletions, and invalidations) in this collection. * @method * @since 3.0.0 * @param {Array} [pipeline] An array of {@link https://docs.mongodb.com/manual/reference/operator/aggregation-pipeline/|aggregation pipeline stages} through which to pass change stream documents. This allows for filtering (using $match) and manipulating the change stream documents. * @param {object} [options] Optional settings * @param {string} [options.fullDocument='default'] Allowed values: ‘default’, ‘updateLookup’. When set to ‘updateLookup’, the change stream will include both a delta describing the changes to the document, as well as a copy of the entire document that was changed from some time after the change occurred. * @param {object} [options.resumeAfter] Specifies the logical starting point for the new change stream. This should be the _id field from a previously returned change stream document. * @param {number} [options.maxAwaitTimeMS] The maximum amount of time for the server to wait on new documents to satisfy a change stream query * @param {number} [options.batchSize] The number of documents to return per batch. See {@link https://docs.mongodb.com/manual/reference/command/aggregate|aggregation documentation}. * @param {object} [options.collation] Specify collation settings for operation. See {@link https://docs.mongodb.com/manual/reference/command/aggregate|aggregation documentation}. * @param {ReadPreference} [options.readPreference] The read preference. Defaults to the read preference of the database or collection. See {@link https://docs.mongodb.com/manual/reference/read-preference|read preference documentation}. * @param {Timestamp} [options.startAtClusterTime] receive change events that occur after the specified timestamp * @param {ClientSession} [options.session] optional session to use for this operation * @return {ChangeStream} a ChangeStream instance. */ Collection.prototype.watch = function(pipeline, options) { pipeline = pipeline || []; options = options || {}; // Allow optionally not specifying a pipeline if (!Array.isArray(pipeline)) { options = pipeline; pipeline = []; } return new ChangeStream(this, pipeline, options); }; /** * The callback format for results * @callback Collection~parallelCollectionScanCallback * @param {MongoError} error An error instance representing the error during the execution. * @param {Cursor[]} cursors A list of cursors returned allowing for parallel reading of collection. */ /** * Return N number of parallel cursors for a collection allowing parallel reading of entire collection. There are * no ordering guarantees for returned results. * @method * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {number} [options.batchSize] Set the batchSize for the getMoreCommand when iterating over the query results. * @param {number} [options.numCursors=1] The maximum number of parallel command cursors to return (the number of returned cursors will be in the range 1:numCursors) * @param {boolean} [options.raw=false] Return all BSON documents as Raw Buffer documents. * @param {Collection~parallelCollectionScanCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.parallelCollectionScan = function(options, callback) { if (typeof options === 'function') (callback = options), (options = { numCursors: 1 }); // Set number of cursors to 1 options.numCursors = options.numCursors || 1; options.batchSize = options.batchSize || 1000; options = Object.assign({}, options); // Ensure we have the right read preference inheritance options.readPreference = resolveReadPreference(options, { db: this.s.db, collection: this }); // Add a promiseLibrary options.promiseLibrary = this.s.promiseLibrary; if (options.session) { options.session = undefined; } return executeOperation(this.s.topology, parallelCollectionScan, [this, options, callback], { skipSessions: true }); }; /** * Execute a geo search using a geo haystack index on a collection. * * @method * @param {number} x Point to search on the x axis, ensure the indexes are ordered in the same order. * @param {number} y Point to search on the y axis, ensure the indexes are ordered in the same order. * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {number} [options.maxDistance] Include results up to maxDistance from the point. * @param {object} [options.search] Filter the results by a query. * @param {number} [options.limit=false] Max number of results to return. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed */ Collection.prototype.geoHaystackSearch = function(x, y, options, callback) { const args = Array.prototype.slice.call(arguments, 2); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; options = args.length ? args.shift() || {} : {}; return executeOperation(this.s.topology, geoHaystackSearch, [this, x, y, options, callback]); }; /** * Run a group command across a collection * * @method * @param {(object|array|function|code)} keys An object, array or function expressing the keys to group by. * @param {object} condition An optional condition that must be true for a row to be considered. * @param {object} initial Initial value of the aggregation counter object. * @param {(function|Code)} reduce The reduce function aggregates (reduces) the objects iterated * @param {(function|Code)} finalize An optional function to be run on each item in the result set just before the item is returned. * @param {boolean} command Specify if you wish to run using the internal group command or using eval, default is true. * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @return {Promise} returns Promise if no callback passed * @deprecated MongoDB 3.6 or higher no longer supports the group command. We recommend rewriting using the aggregation framework. */ Collection.prototype.group = deprecate(function( keys, condition, initial, reduce, finalize, command, options, callback ) { const args = Array.prototype.slice.call(arguments, 3); callback = typeof args[args.length - 1] === 'function' ? args.pop() : undefined; reduce = args.length ? args.shift() : null; finalize = args.length ? args.shift() : null; command = args.length ? args.shift() : null; options = args.length ? args.shift() || {} : {}; // Make sure we are backward compatible if (!(typeof finalize === 'function')) { command = finalize; finalize = null; } if ( !Array.isArray(keys) && keys instanceof Object && typeof keys !== 'function' && !(keys._bsontype === 'Code') ) { keys = Object.keys(keys); } if (typeof reduce === 'function') { reduce = reduce.toString(); } if (typeof finalize === 'function') { finalize = finalize.toString(); } // Set up the command as default command = command == null ? true : command; return executeOperation(this.s.topology, group, [ this, keys, condition, initial, reduce, finalize, command, options, callback ]); }, 'MongoDB 3.6 or higher no longer supports the group command. We recommend rewriting using the aggregation framework.'); /** * Run Map Reduce across a collection. Be aware that the inline option for out will return an array of results not a collection. * * @method * @param {(function|string)} map The mapping function. * @param {(function|string)} reduce The reduce function. * @param {object} [options] Optional settings. * @param {(ReadPreference|string)} [options.readPreference] The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST). * @param {object} [options.out] Sets the output target for the map reduce job. *{inline:1} | {replace:'collectionName'} | {merge:'collectionName'} | {reduce:'collectionName'}* * @param {object} [options.query] Query filter object. * @param {object} [options.sort] Sorts the input objects using this key. Useful for optimization, like sorting by the emit key for fewer reduces. * @param {number} [options.limit] Number of objects to return from collection. * @param {boolean} [options.keeptemp=false] Keep temporary data. * @param {(function|string)} [options.finalize] Finalize function. * @param {object} [options.scope] Can pass in variables that can be access from map/reduce/finalize. * @param {boolean} [options.jsMode=false] It is possible to make the execution stay in JS. Provided in MongoDB > 2.0.X. * @param {boolean} [options.verbose=false] Provide statistics on job execution time. * @param {boolean} [options.bypassDocumentValidation=false] Allow driver to bypass schema validation in MongoDB 3.2 or higher. * @param {ClientSession} [options.session] optional session to use for this operation * @param {Collection~resultCallback} [callback] The command result callback * @throws {MongoError} * @return {Promise} returns Promise if no callback passed */ Collection.prototype.mapReduce = function(map, reduce, options, callback) { if ('function' === typeof options) (callback = options), (options = {}); // Out must allways be defined (make sure we don't break weirdly on pre 1.8+ servers) if (null == options.out) { throw new Error( 'the out option parameter must be defined, see mongodb docs for possible values' ); } if ('function' === typeof map) { map = map.toString(); } if ('function' === typeof reduce) { reduce = reduce.toString(); } if ('function' === typeof options.finalize) { options.finalize = options.finalize.toString(); } return executeOperation(this.s.topology, mapReduce, [this, map, reduce, options, callback]); }; /** * Initiate an Out of order batch write operation. All operations will be buffered into insert/update/remove commands executed out of order. * * @method * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @return {UnorderedBulkOperation} */ Collection.prototype.initializeUnorderedBulkOp = function(options) { options = options || {}; options.promiseLibrary = this.s.promiseLibrary; return unordered(this.s.topology, this, 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. * * @method * @param {object} [options] Optional settings. * @param {(number|string)} [options.w] The write concern. * @param {number} [options.wtimeout] The write concern timeout. * @param {boolean} [options.j=false] Specify a journal write concern. * @param {ClientSession} [options.session] optional session to use for this operation * @param {OrderedBulkOperation} callback The command result callback * @return {null} */ Collection.prototype.initializeOrderedBulkOp = function(options) { options = options || {}; options.promiseLibrary = this.s.promiseLibrary; return ordered(this.s.topology, this, options); }; /** * Return the db logger * @method * @return {Logger} return the db logger * @ignore */ Collection.prototype.getLogger = function() { return this.s.db.s.logger; }; module.exports = Collection;