diff options
Diffstat (limited to 'node_modules/mongodb/lib/mongodb/commands/insert_command.js')
| -rw-r--r-- | node_modules/mongodb/lib/mongodb/commands/insert_command.js | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/node_modules/mongodb/lib/mongodb/commands/insert_command.js b/node_modules/mongodb/lib/mongodb/commands/insert_command.js new file mode 100644 index 0000000..3036a02 --- /dev/null +++ b/node_modules/mongodb/lib/mongodb/commands/insert_command.js @@ -0,0 +1,141 @@ +var BaseCommand = require('./base_command').BaseCommand, + inherits = require('util').inherits; + +/** + Insert Document Command +**/ +var InsertCommand = exports.InsertCommand = function(db, collectionName, checkKeys, options) { + BaseCommand.call(this); + + this.collectionName = collectionName; + this.documents = []; + this.checkKeys = checkKeys == null ? true : checkKeys; + this.db = db; + this.flags = 0; + this.serializeFunctions = false; + + // Ensure valid options hash + options = options == null ? {} : options; + + // Check if we have keepGoing set -> set flag if it's the case + if(options['keepGoing'] != null && options['keepGoing']) { + // This will finish inserting all non-index violating documents even if it returns an error + this.flags = 1; + } + + // Let us defined on a command basis if we want functions to be serialized or not + if(options['serializeFunctions'] != null && options['serializeFunctions']) { + this.serializeFunctions = true; + } +}; + +inherits(InsertCommand, BaseCommand); + +// OpCodes +InsertCommand.OP_INSERT = 2002; + +InsertCommand.prototype.add = function(document) { + if(Buffer.isBuffer(document)) { + var object_size = document[0] | document[1] << 8 | document[2] << 16 | document[3] << 24; + if(object_size != document.length) { + var error = new Error("insert raw message size does not match message header size [" + document.length + "] != [" + object_size + "]"); + error.name = 'MongoError'; + throw error; + } + } + + this.documents.push(document); + return this; +}; + +/* +struct { + MsgHeader header; // standard message header + int32 ZERO; // 0 - reserved for future use + cstring fullCollectionName; // "dbname.collectionname" + BSON[] documents; // one or more documents to insert into the collection +} +*/ +InsertCommand.prototype.toBinary = function() { + // Calculate total length of the document + var totalLengthOfCommand = 4 + Buffer.byteLength(this.collectionName) + 1 + (4 * 4); + // var docLength = 0 + for(var i = 0; i < this.documents.length; i++) { + if(Buffer.isBuffer(this.documents[i])) { + totalLengthOfCommand += this.documents[i].length; + } else { + // Calculate size of document + totalLengthOfCommand += this.db.bson.calculateObjectSize(this.documents[i], this.serializeFunctions, true); + } + } + + // Let's build the single pass buffer command + var _index = 0; + var _command = new Buffer(totalLengthOfCommand); + // Write the header information to the buffer + _command[_index + 3] = (totalLengthOfCommand >> 24) & 0xff; + _command[_index + 2] = (totalLengthOfCommand >> 16) & 0xff; + _command[_index + 1] = (totalLengthOfCommand >> 8) & 0xff; + _command[_index] = totalLengthOfCommand & 0xff; + // Adjust index + _index = _index + 4; + // Write the request ID + _command[_index + 3] = (this.requestId >> 24) & 0xff; + _command[_index + 2] = (this.requestId >> 16) & 0xff; + _command[_index + 1] = (this.requestId >> 8) & 0xff; + _command[_index] = this.requestId & 0xff; + // Adjust index + _index = _index + 4; + // Write zero + _command[_index++] = 0; + _command[_index++] = 0; + _command[_index++] = 0; + _command[_index++] = 0; + // Write the op_code for the command + _command[_index + 3] = (InsertCommand.OP_INSERT >> 24) & 0xff; + _command[_index + 2] = (InsertCommand.OP_INSERT >> 16) & 0xff; + _command[_index + 1] = (InsertCommand.OP_INSERT >> 8) & 0xff; + _command[_index] = InsertCommand.OP_INSERT & 0xff; + // Adjust index + _index = _index + 4; + // Write flags if any + _command[_index + 3] = (this.flags >> 24) & 0xff; + _command[_index + 2] = (this.flags >> 16) & 0xff; + _command[_index + 1] = (this.flags >> 8) & 0xff; + _command[_index] = this.flags & 0xff; + // Adjust index + _index = _index + 4; + // Write the collection name to the command + _index = _index + _command.write(this.collectionName, _index, 'utf8') + 1; + _command[_index - 1] = 0; + + // Write all the bson documents to the buffer at the index offset + for(var i = 0; i < this.documents.length; i++) { + // Document binary length + var documentLength = 0 + var object = this.documents[i]; + + // Serialize the selector + // If we are passing a raw buffer, do minimal validation + if(Buffer.isBuffer(object)) { + documentLength = object.length; + // Copy the data into the current buffer + object.copy(_command, _index); + } else { + // Serialize the document straight to the buffer + documentLength = this.db.bson.serializeWithBufferAndIndex(object, this.checkKeys, _command, _index, this.serializeFunctions) - _index + 1; + } + + // Write the length to the document + _command[_index + 3] = (documentLength >> 24) & 0xff; + _command[_index + 2] = (documentLength >> 16) & 0xff; + _command[_index + 1] = (documentLength >> 8) & 0xff; + _command[_index] = documentLength & 0xff; + // Update index in buffer + _index = _index + documentLength; + // Add terminating 0 for the object + _command[_index - 1] = 0; + } + + return _command; +}; |
