/**
* Returns the identifier assigned to the given entity.
*
* {@inheritDoc}
*
* @throws \Doctrine\ORM\ORMException
*/
public function generate(EntityManager $em, $entity)
{
$class = $em->getClassMetadata(get_class($entity));
$idFields = $class->getIdentifierFieldNames();
$identifier = array();
foreach ($idFields as $idField) {
$value = $class->getFieldValue($entity, $idField);
if (!isset($value)) {
throw ORMException::entityMissingAssignedIdForField($entity, $idField);
}
if (isset($class->associationMappings[$idField])) {
// NOTE: Single Columns as associated identifiers only allowed - this constraint it is enforced.
$value = $em->getUnitOfWork()->getSingleIdentifierValue($value);
}
$identifier[$idField] = $value;
}
return $identifier;
}
