/**
* Initializes the migration.
* This method will set {@see \rock\mongodb\Migration::$connection} to be the 'mongodb' application component, if it is null.
*/
public function init()
{
$this->connection = Instance::ensure($this->connection, Connection::className());
}
/**
* Returns the Mongo collection for this query.
*
* @param ConnectionInterface $connection Mongo connection.
* @return Collection collection instance.
*/
public function getCollection(ConnectionInterface $connection = null)
{
$this->connection = isset($connection) ? $connection : Instance::ensure($this->connection, Connection::className());
$this->calculateCacheParams($this->connection);
return $this->connection->getCollection($this->from);
}
/**
* Returns the Mongo connection used by this AR class.
* By default, the "mongodb" application component is used as the Mongo connection.
* You may override this method if you want to use a different database connection.
* @return Connection the database connection used by this AR class.
*/
public static function getConnection()
{
return Instance::ensure('mongodb', Connection::className());
}
