function cleanDBonPurge()
{
global $DB;
$query1 = "DELETE\n FROM `glpi_tickettasks`\n WHERE `tickets_id` = '" . $this->fields['id'] . "'";
$DB->query($query1);
$query1 = "DELETE\n FROM `glpi_ticketfollowups`\n WHERE `tickets_id` = '" . $this->fields['id'] . "'";
$DB->query($query1);
$ts = new TicketValidation();
$ts->cleanDBonItemDelete($this->getType(), $this->fields['id']);
$query1 = "DELETE\n FROM `glpi_ticketsatisfactions`\n WHERE `tickets_id` = '" . $this->fields['id'] . "'";
$DB->query($query1);
$pt = new Problem_Ticket();
$pt->cleanDBonItemDelete('Ticket', $this->fields['id']);
$ts = new TicketCost();
$ts->cleanDBonItemDelete($this->getType(), $this->fields['id']);
$slaLevel_ticket = new SlaLevel_Ticket();
$slaLevel_ticket->deleteForTicket($this->getID(), SLT::TTO);
$slaLevel_ticket->deleteForTicket($this->getID(), SLT::TTR);
$query1 = "DELETE\n FROM `glpi_tickets_tickets`\n WHERE `tickets_id_1` = '" . $this->fields['id'] . "'\n OR `tickets_id_2` = '" . $this->fields['id'] . "'";
$DB->query($query1);
$ct = new Change_Ticket();
$ct->cleanDBonItemDelete(__CLASS__, $this->fields['id']);
$ip = new Item_Ticket();
$ip->cleanDBonItemDelete('Ticket', $this->fields['id']);
parent::cleanDBonPurge();
}
