public function on_after_delete()
{
parent::on_after_delete();
$oRef = new ReflectionClass($this->getSpiderClassName());
$oSpider = $oRef->newInstance(array());
$table = $oSpider->table['table'];
$rs = Identifiable::getItemById($this->spiderID, $table);
$oSpider = $oRef->newInstance($rs);
$oSpider->delete();
}