/**
* Deletes an entity as part of the current unit of work.
*
* This method is internally called during delete() cascades as it tracks
* the already visited entities to prevent infinite recursions.
*
* @param object $entity The entity to delete.
* @param array $visited The map of the already visited entities.
*
* @return void
*
* @throws ORMInvalidArgumentException If the instance is a detached entity.
* @throws UnexpectedValueException
*/
private function doRemove($entity, array &$visited)
{
$oid = spl_object_hash($entity);
if (isset($visited[$oid])) {
return;
// Prevent infinite recursion
}
$visited[$oid] = $entity;
// mark visited
// Cascade first, because scheduleForDelete() removes the entity from the identity map, which
// can cause problems when a lazy proxy has to be initialized for the cascade operation.
$this->cascadeRemove($entity, $visited);
$class = $this->em->getClassMetadata(get_class($entity));
$entityState = $this->getEntityState($entity);
switch ($entityState) {
case self::STATE_NEW:
case self::STATE_REMOVED:
// nothing to do
break;
case self::STATE_MANAGED:
$invoke = $this->listenersInvoker->getSubscribedSystems($class, Events::preRemove);
if ($invoke !== ListenersInvoker::INVOKE_NONE) {
$this->listenersInvoker->invoke($class, Events::preRemove, $entity, new LifecycleEventArgs($entity, $this->em), $invoke);
}
$this->scheduleForDelete($entity);
break;
case self::STATE_DETACHED:
throw ORMInvalidArgumentException::detachedEntityCannot($entity, "removed");
default:
throw new UnexpectedValueException("Unexpected entity state: {$entityState}." . self::objToStr($entity));
}
}
