MONGODBDRIVERCOMMAND(3) 						 1						   MONGODBDRIVERCOMMAND(3)

The MongoDBDriverCommand class

INTRODUCTION

	The MongoDBDriverCommand class is a value object that represents a database command.

	To provide Command Helpers the MongoDBDriverCommand object should be composed.

CLASS SYNOPSIS

       MongoDB.PP final
       MongoDB.PP Methods

       o finalpublic MongoDBDriverCommand::__construct (array|object	$document)

EXAMPLES

       Example #1

	      Composing MongoDBDriverCommand to provide a helper to create collections

	      <?php
	      class CreateCollection {
		  protected $cmd = array();

		  function __construct($collectionName) {
		      $this->cmd["create"] = (string)$collectionName;
		  }
		  function setAutoIndexId($bool) {
		      $this->cmd["autoIndexId"] = (bool)$bool;
		  }
		  function setCappedCollection($maxBytes, $maxDocuments = false) {
		      $this->cmd["capped"] = true;
		      $this->cmd["size"]   = (int)$maxBytes;

		      if ($maxDocuments) {
			  $this->cmd["max"] = (int)$maxDocuments;
		      }
		  }
		  function usePowerOf2Sizes($bool) {
		      if ($bool) {
			  $this->cmd["flags"] = 1;
		      } else {
			  $this->cmd["flags"] = 0;
		      }
		  }
		  function setFlags($flags) {
		      $this->cmd["flags"] = (int)$flags;
		  }
		  function getCommand() {
		      return new MongoDBDriverCommand($this->cmd);
		  }
		  function getCollectionName() {
		      return $this->cmd["create"];
		  }
	      }

	      $manager = new MongoDBDriverManager("mongodb://localhost:27017");

	      $createCollection = new CreateCollection("cappedCollection");
	      $createCollection->setCappedCollection(64 * 1024);

	      try {
		  $command = $createCollection->getCommand();
		  $cursor = $manager->executeCommand("databaseName", $command);
		  $response = $cursor->toArray()[0];
		  var_dump($response);

		  $collstats = ["collstats" => $createCollection->getCollectionName()];
		  $cursor = $manager->executeCommand("databaseName", new MongoDBDriverCommand($collstats));
		  $response = $cursor->toArray()[0];
		  var_dump($response);
	      } catch(MongoDBDriverException $e) {
		  echo $e->getMessage(), "
";
		  exit;
	      }

	      ?>

       The above example will output:

       object(MongoDBDriverCommand)#3(1) {
	 ["command"]=>
	 array(3) {
	   ["create"]=>
	   string(16) "cappedCollection"
	   ["capped"]=>
	   bool(true)
	   ["size"]=>
	   int(65536)
	 }
       }
       array(1) {
	 ["ok"]=>
	 float(1)
       }
       array(16) {
	 ["ns"]=>
	 string(29) "databaseName.cappedCollection"
	 ["count"]=>
	 int(0)
	 ["size"]=>
	 int(0)
	 ["numExtents"]=>
	 int(1)
	 ["storageSize"]=>
	 int(65536)
	 ["nindexes"]=>
	 int(1)
	 ["lastExtentSize"]=>
	 float(65536)
	 ["paddingFactor"]=>
	 float(1)
	 ["paddingFactorNote"]=>
	 string(101) "paddingFactor is unused and unmaintained in 2.8. It remains hard coded to 1.0 for compatibility only."
	 ["userFlags"]=>
	 int(0)
	 ["capped"]=>
	 bool(true)
	 ["max"]=>
	 int(9223372036854775807)
	 ["maxSize"]=>
	 int(65536)
	 ["totalIndexSize"]=>
	 int(8176)
	 ["indexSizes"]=>
	 object(stdClass)#4(1) {
	   ["_id_"]=>
	   int(8176)
	 }
	 ["ok"]=>
	 float(1)
       }

PHP Documentation Group 												   MONGODBDRIVERCOMMAND(3)