static function countForItem(CommonDBTM $item)
{
$restrict = "`glpi_items_tickets`.`tickets_id` = `glpi_tickets`.`id`\n AND `glpi_items_tickets`.`items_id` = '" . $item->getField('id') . "'\n AND `glpi_items_tickets`.`itemtype` = '" . $item->getType() . "'" . getEntitiesRestrictRequest(" AND ", "glpi_tickets", '', '', true);
$nb = countElementsInTable(array('glpi_items_tickets', 'glpi_tickets'), $restrict);
return $nb;
}