/**
* Deletes an item
* @return bool
* @throws ItemDeleteInformationException
* @throws ItemDeleteClassException
* @throws ItemDeleteEventFailedException
* @throws ItemDeleteFailedException
* @throws ItemNoInstanceException
*/
protected function delete()
{
global $transaction;
if ($this->item_id and $this->item) {
$transaction_id = $transaction->begin();
try {
$item_information_array = ItemInformation::list_item_information($this->item_id);
if (is_array($item_information_array) and count($item_information_array) >= 1) {
foreach ($item_information_array as $key => $value) {
$item_information = new ItemInformation($value);
if ($item_information->unlink_item($this->item_id) == false) {
throw new ItemDeleteInformationException();
}
}
}
// Item Classes
$item_class_array = ItemClass::list_classes_by_item_id($this->item_id);
if (is_array($item_class_array) and count($item_class_array) >= 1) {
foreach ($item_class_array as $key => $value) {
$item_class = new ItemClass($value);
if ($item_class->unlink_item($this->item_id) == false) {
throw new ItemDeleteClassException();
}
}
}
// Event
$item_delete_event = new ItemDeleteEvent($this->item_id);
$event_handler = new EventHandler($item_delete_event);
if ($event_handler->get_success() == false) {
throw new ItemDeleteEventFailedException();
}
if ($this->item->delete() == false) {
throw new ItemDeleteFailedException();
}
} catch (BaseException $e) {
if ($transaction_id != null) {
$transaction->rollback($transaction_id);
}
throw $e;
}
if ($transaction_id != null) {
$transaction->commit($transaction_id);
}
return true;
} else {
throw new ItemNoInstanceException();
}
}