/**
* Note that we use TTL Collections to have the Mongo deamon automatically clean
* expired entries.
*
* @link http://docs.mongodb.org/manual/tutorial/expire-data/
* @param array $options
*/
public function __construct(array $options = array())
{
if (!extension_loaded('mongo')) {
Zend_Cache::throwException('The MongoDB extension must be loaded for using this backend !');
}
parent::__construct($options);
// Merge the options passed in; overriding any default options
$this->_options = array_merge($this->_options, $options);
$conn = new \MongoClient($this->_getServerConnectionUrl());
$this->_database = $conn->{$this->_options['dbname']};
$this->_collection = $this->_database->selectCollection($this->_options['collection']);
$this->_collection->createIndex(array('tags' => 1), array('background' => true));
$this->_collection->createIndex(array('expires_at' => 1), array('background' => true, 'expireAfterSeconds' => 0));
}
public function __construct(MongoBaseDatabase $database, $database_name, $collection_name)
{
$this->database = $database;
$this->name = $collection_name;
$mongo_db = $database->getMasterConnection()->selectDB($database_name);
$collection_names = $mongo_db->getCollectionNames();
if (!in_array($collection_name, $collection_names)) {
// create
$this->masterCollection = $mongo_db->createCollection($collection_name);
} else {
$this->masterCollection = $mongo_db->selectCollection($collection_name);
}
$this->masterMongoDb = $mongo_db;
// slave
$this->slaveMongoDb = $database->getSlaveConnection()->selectDB($database_name);
$this->slaveCollection = $this->slaveMongoDb->selectCollection($collection_name);
}
/**
* getCollection get a handle to the collection object
*
* @access private
* @return MongoCollection the mongo collection class reffering to the
* appropriate dataset
*/
private function getCollection()
{
// if the collection is not already cached
if (empty($this->collection)) {
// selects the collection if it exists
$this->collection = $this->db->selectCollection(self::COLLECTION);
// or creates a new one if it doesn't
if (empty($this->collection)) {
$this->collection = $this->db->createCollection(self::COLLECTION);
}
}
return $this->collection;
}
/**
* Create Schema
*
* @return DBAL
*/
public function createSchema()
{
$this->connection->selectCollection($this->tableName)->ensureIndex('version', array('unique' => 1));
return $this;
}
