/**
* 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 $visited The map of the already visited entities.
* @throws InvalidArgumentException If the instance is a detached entity.
*/
private function _doRemove($entity, array &$visited)
{
$oid = spl_object_hash($entity);
if (isset($visited[$oid])) {
return;
// Prevent infinite recursion
}
$visited[$oid] = $entity;
// mark visited
$class = $this->_em->getClassMetadata(get_class($entity));
$entityState = $this->getEntityState($entity);
switch ($entityState) {
case self::STATE_NEW:
case self::STATE_REMOVED:
// nothing to do
break;
case self::STATE_MANAGED:
if (isset($class->lifecycleCallbacks[Events::preRemove])) {
$class->invokeLifecycleCallbacks(Events::preRemove, $entity);
}
if ($this->_evm->hasListeners(Events::preRemove)) {
$this->_evm->dispatchEvent(Events::preRemove, new LifecycleEventArgs($entity, $this->_em));
}
$this->scheduleForDelete($entity);
break;
case self::STATE_DETACHED:
throw ORMException::detachedEntityCannotBeRemoved();
default:
throw ORMException::invalidEntityState($entityState);
}
$this->_cascadeRemove($entity, $visited);
}
