protected function _createCriteria(\App_ListFilter_Interface $filter, \App_ListFilter $filterList) { switch ($filter->getFieldName()) { case SimFilterFields::ALARM_TYPE: case SimFilterFields::ALARM_SEVERITY: case SimFilterFields::ALARM_ATTENDED: if ($this->_isAlarmFilterMapped) { return; } break; } return parent::_createCriteria($filter, $filterList); }