Initial commit

node_modules/mongodb/lib/operations/find_and_modify.js

@@ -0,0 +1,115 @@
+'use strict';
+
+const OperationBase = require('./operation').OperationBase;
+const applyRetryableWrites = require('../utils').applyRetryableWrites;
+const applyWriteConcern = require('../utils').applyWriteConcern;
+const decorateWithCollation = require('../utils').decorateWithCollation;
+const executeCommand = require('./db_ops').executeCommand;
+const formattedOrderClause = require('../utils').formattedOrderClause;
+const handleCallback = require('../utils').handleCallback;
+const ReadPreference = require('../core').ReadPreference;
+const maxWireVersion = require('../core/utils').maxWireVersion;
+const MongoError = require('../error').MongoError;
+
+class FindAndModifyOperation extends OperationBase {
+  constructor(collection, query, sort, doc, options) {
+    super(options);
+
+    this.collection = collection;
+    this.query = query;
+    this.sort = sort;
+    this.doc = doc;
+  }
+
+  execute(callback) {
+    const coll = this.collection;
+    const query = this.query;
+    const sort = formattedOrderClause(this.sort);
+    const doc = this.doc;
+    let options = this.options;
+
+    // Create findAndModify command object
+    const queryObject = {
+      findAndModify: coll.collectionName,
+      query: query
+    };
+
+    if (sort) {
+      queryObject.sort = sort;
+    }
+
+    queryObject.new = options.new ? true : false;
+    queryObject.remove = options.remove ? true : false;
+    queryObject.upsert = options.upsert ? true : false;
+
+    const projection = options.projection || options.fields;
+
+    if (projection) {
+      queryObject.fields = projection;
+    }
+
+    if (options.arrayFilters) {
+      queryObject.arrayFilters = options.arrayFilters;
+    }
+
+    if (doc && !options.remove) {
+      queryObject.update = doc;
+    }
+
+    if (options.maxTimeMS) queryObject.maxTimeMS = options.maxTimeMS;
+
+    // Either use override on the function, or go back to default on either the collection
+    // level or db
+    options.serializeFunctions = options.serializeFunctions || coll.s.serializeFunctions;
+
+    // No check on the documents
+    options.checkKeys = false;
+
+    // Final options for retryable writes and write concern
+    options = applyRetryableWrites(options, coll.s.db);
+    options = applyWriteConcern(options, { db: coll.s.db, collection: coll }, options);
+
+    // Decorate the findAndModify command with the write Concern
+    if (options.writeConcern) {
+      queryObject.writeConcern = options.writeConcern;
+    }
+
+    // Have we specified bypassDocumentValidation
+    if (options.bypassDocumentValidation === true) {
+      queryObject.bypassDocumentValidation = options.bypassDocumentValidation;
+    }
+
+    options.readPreference = ReadPreference.primary;
+
+    // Have we specified collation
+    try {
+      decorateWithCollation(queryObject, coll, options);
+    } catch (err) {
+      return callback(err, null);
+    }
+
+    if (options.hint) {
+      // TODO: once this method becomes a CommandOperationV2 we will have the server
+      // in place to check.
+      const unacknowledgedWrite = options.writeConcern && options.writeConcern.w === 0;
+      if (unacknowledgedWrite || maxWireVersion(coll.s.topology) < 8) {
+        callback(
+          new MongoError('The current topology does not support a hint on findAndModify commands')
+        );
+
+        return;
+      }
+
+      queryObject.hint = options.hint;
+    }
+
+    // Execute the command
+    executeCommand(coll.s.db, queryObject, options, (err, result) => {
+      if (err) return handleCallback(callback, err, null);
+
+      return handleCallback(callback, null, result);
+    });
+  }
+}
+
+module.exports = FindAndModifyOperation;