/**
* Factory method. Builds a connection object and returns it.
*
* @param string $adapter The adapter string (mysql or oracle)
* @param Zend_Config|array $config (optional) The connection configuration array
* @return Zend_Db_Abstract The database connection object.
*/
public static function factory($adapter, $config = array())
{
$self = new self($adapter, $config);
return $self->_constructAdapter();
}
