function massUpdate($srcItemId, $mdLabel, $itemIdArray)
 {
     $mdFactory = new Docman_MetadataFactory($this->groupId);
     if ($mdFactory->isRealMetadata($mdLabel)) {
         $md = $mdFactory->getFromLabel($mdLabel);
         $dao =& $this->getDao();
         $dao->massUpdate($srcItemId, $md->getId(), $md->getType(), $itemIdArray);
     } else {
         $itemFactory = new Docman_ItemFactory($this->groupId);
         $itemFactory->massUpdate($srcItemId, $mdLabel, $itemIdArray);
     }
 }