public function getConditionsForField($field)
 {
     switch ($field) {
         case self::FIELD_REF_NAME:
             return array(self::CONDITION_IS, self::CONDITION_IS_NOT, self::CONDITION_CONTAINS, self::CONDITION_REGEXP);
         case self::FIELD_REF_TYPE:
             return array(self::CONDITION_IS, self::CONDITION_IS_NOT);
         case self::FIELD_REF_CHANGE:
             return array(self::CONDITION_HAS_BIT, self::CONDITION_NOT_BIT);
     }
     return parent::getConditionsForField($field);
 }