protected function _getColumnProperty($column_name) { if (!($property_name = B2DB::getCachedColumnClassProperty($column_name, get_class($this)))) { $property = explode('.', $column_name); $property_name = "_" . strtolower($property[1]); B2DB::addCachedColumnClassProperty($column_name, get_class($this), $property_name); } return $property_name; }