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File: DatabaseCommand.php
<?php /* * Copyright 2015-2017 MongoDB, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ namespace MongoDB\Operation; use MongoDB\Driver\Command; use MongoDB\Driver\Cursor; use MongoDB\Driver\ReadPreference; use MongoDB\Driver\Server; use MongoDB\Driver\Session; use MongoDB\Exception\InvalidArgumentException; /** * Operation for executing a database command. * * @api * @see \MongoDB\Database::command() */ class DatabaseCommand implements Executable { private $databaseName; private $command; private $options; /** * Constructs a command. * * Supported options: * * * readPreference (MongoDB\Driver\ReadPreference): The read preference to * use when executing the command. This may be used when issuing the * command to a replica set or mongos node to ensure that the driver sets * the wire protocol accordingly or adds the read preference to the * command document, respectively. * * * session (MongoDB\Driver\Session): Client session. * * Sessions are not supported for server versions < 3.6. * * * typeMap (array): Type map for BSON deserialization. This will be * applied to the returned Cursor (it is not sent to the server). * * @param string $databaseName Database name * @param array|object $command Command document * @param array $options Options for command execution * @throws InvalidArgumentException for parameter/option parsing errors */ public function __construct($databaseName, $command, array $options = []) { if ( ! is_array($command) && ! is_object($command)) { throw InvalidArgumentException::invalidType('$command', $command, 'array or object'); } if (isset($options['readPreference']) && ! $options['readPreference'] instanceof ReadPreference) { throw InvalidArgumentException::invalidType('"readPreference" option', $options['readPreference'], 'MongoDB\Driver\ReadPreference'); } if (isset($options['session']) && ! $options['session'] instanceof Session) { throw InvalidArgumentException::invalidType('"session" option', $options['session'], 'MongoDB\Driver\Session'); } if (isset($options['typeMap']) && ! is_array($options['typeMap'])) { throw InvalidArgumentException::invalidType('"typeMap" option', $options['typeMap'], 'array'); } $this->databaseName = (string) $databaseName; $this->command = ($command instanceof Command) ? $command : new Command($command); $this->options = $options; } /** * Execute the operation. * * @see Executable::execute() * @param Server $server * @return Cursor */ public function execute(Server $server) { $cursor = $server->executeCommand($this->databaseName, $this->command, $this->createOptions()); if (isset($this->options['typeMap'])) { $cursor->setTypeMap($this->options['typeMap']); } return $cursor; } /** * Create options for executing the command. * * @see http://php.net/manual/en/mongodb-driver-server.executecommand.php * @return array */ private function createOptions() { $options = []; if (isset($this->options['readPreference'])) { $options['readPreference'] = $this->options['readPreference']; } if (isset($this->options['session'])) { $options['session'] = $this->options['session']; } return $options; } }