/**
* Computes the changes of an association.
*
* @param array $assoc The association mapping.
* @param mixed $value The value of the association.
*
* @throws ORMInvalidArgumentException
* @throws ORMException
*
* @return void
*/
private function computeAssociationChanges($assoc, $value)
{
if ($value instanceof Proxy && !$value->__isInitialized__) {
return;
}
if ($value instanceof PersistentCollection && $value->isDirty()) {
$coid = spl_object_hash($value);
if ($assoc['isOwningSide']) {
$this->collectionUpdates[$coid] = $value;
}
$this->visitedCollections[$coid] = $value;
}
// Look through the entities, and in any of their associations,
// for transient (new) entities, recursively. ("Persistence by reachability")
// Unwrap. Uninitialized collections will simply be empty.
$unwrappedValue = $assoc['type'] & ClassMetadata::TO_ONE ? array($value) : $value->unwrap();
$targetClass = $this->em->getClassMetadata($assoc['targetEntity']);
foreach ($unwrappedValue as $key => $entry) {
$state = $this->getEntityState($entry, self::STATE_NEW);
if (!$entry instanceof $assoc['targetEntity']) {
throw ORMException::unexpectedAssociationValue($assoc['sourceEntity'], $assoc['fieldName'], get_class($entry), $assoc['targetEntity']);
}
switch ($state) {
case self::STATE_NEW:
if (!$assoc['isCascadePersist']) {
throw ORMInvalidArgumentException::newEntityFoundThroughRelationship($assoc, $entry);
}
$this->persistNew($targetClass, $entry);
$this->computeChangeSet($targetClass, $entry);
break;
case self::STATE_REMOVED:
// Consume the $value as array (it's either an array or an ArrayAccess)
// and remove the element from Collection.
if ($assoc['type'] & ClassMetadata::TO_MANY) {
unset($value[$key]);
}
break;
case self::STATE_DETACHED:
// Can actually not happen right now as we assume STATE_NEW,
// so the exception will be raised from the DBAL layer (constraint violation).
throw ORMInvalidArgumentException::detachedEntityFoundThroughRelationship($assoc, $entry);
break;
default:
// MANAGED associated entities are already taken into account
// during changeset calculation anyway, since they are in the identity map.
}
}
}
