function cleanDBonPurge()
 {
     $networkPort = new NetworkPort();
     $networkPort->cleanDBonItemDelete($this->getType(), $this->fields['id']);
 }
 /**
  * Clean the date in the relation tables for the deleted item
  * Clear N/N Relation
  **/
 function cleanRelationTable()
 {
     global $CFG_GLPI, $DB;
     // If this type have INFOCOM, clean one associated to purged item
     if (Infocom::canApplyOn($this)) {
         $infocom = new Infocom();
         if ($infocom->getFromDBforDevice($this->getType(), $this->fields['id'])) {
             $infocom->delete(array('id' => $infocom->fields['id']));
         }
     }
     // If this type have NETPORT, clean one associated to purged item
     if (in_array($this->getType(), $CFG_GLPI['networkport_types'])) {
         // If we don't use delete, then cleanDBonPurge() is not call and the NetworkPorts are not
         // clean properly
         $networkPortObject = new NetworkPort();
         $networkPortObject->cleanDBonItemDelete($this->getType(), $this->getID());
         // Manage networkportmigration if exists
         if (TableExists('glpi_networkportmigrations')) {
             $networkPortMigObject = new NetworkPortMigration();
             $networkPortMigObject->cleanDBonItemDelete($this->getType(), $this->getID());
         }
     }
     // If this type is RESERVABLE clean one associated to purged item
     if (in_array($this->getType(), $CFG_GLPI['reservation_types'])) {
         $rr = new ReservationItem();
         if ($rr->getFromDBbyItem($this->getType(), $this->fields['id'])) {
             $rr->delete(array('id' => $infocom->fields['id']));
         }
     }
     // If this type have CONTRACT, clean one associated to purged item
     if (in_array($this->getType(), $CFG_GLPI['contract_types'])) {
         $ci = new Contract_Item();
         $ci->cleanDBonItemDelete($this->getType(), $this->fields['id']);
     }
     // If this type have DOCUMENT, clean one associated to purged item
     if (Document::canApplyOn($this)) {
         $di = new Document_Item();
         $di->cleanDBonItemDelete($this->getType(), $this->fields['id']);
     }
     // If this type have NOTEPAD, clean one associated to purged item
     if ($this->usenotepad) {
         $note = new Notepad();
         $note->cleanDBonItemDelete($this->getType(), $this->fields['id']);
     }
 }