/**
* INTERNAL:
* Registers an entity in the identity map.
* Note that entities in a hierarchy are registered with the class name of
* the root entity.
*
* @ignore
*
* @param object $entity The entity to register.
*
* @return boolean TRUE if the registration was successful, FALSE if the identity of
* the entity in question is already managed.
*
* @throws ORMInvalidArgumentException
*/
public function addToIdentityMap($entity)
{
$classMetadata = $this->em->getClassMetadata(get_class($entity));
$idHash = implode(' ', $this->entityIdentifiers[spl_object_hash($entity)]);
if ($idHash === '') {
throw ORMInvalidArgumentException::entityWithoutIdentity($classMetadata->name, $entity);
}
$className = $classMetadata->rootEntityName;
if (isset($this->identityMap[$className][$idHash])) {
return false;
}
$this->identityMap[$className][$idHash] = $entity;
return true;
}
