/**
* Gets the metadata for a relationship.
*
* @param RelationshipMetadata $relMeta The relationship metadata.
* @return EntityMetadata
*/
public function getMetadataForRelationship(RelationshipMetadata $relMeta)
{
return $this->getMetadataForType($relMeta->getEntityType());
}
/**
* Extracts a standard relationship array that the store expects from a raw MongoDB reference value.
*
* @param RelationshipMetadata $relMeta
* @param mixed $reference
* @return array
* @throws \RuntimeException If the relationship could not be extracted.
*/
protected function extractRelationship(RelationshipMetadata $relMeta, $reference)
{
$simple = false === $relMeta->isPolymorphic();
$idKey = $this->getIdentifierKey();
$typeKey = $this->getPolymorphicKey();
if (true === $simple && is_array($reference) && isset($reference[$idKey])) {
return ['id' => $reference[$idKey], 'type' => $relMeta->getEntityType()];
} elseif (true === $simple && !is_array($reference)) {
return ['id' => $reference, 'type' => $relMeta->getEntityType()];
} elseif (false === $simple && is_array($reference) && isset($reference[$idKey]) && isset($reference[$typeKey])) {
return ['id' => $reference[$idKey], 'type' => $reference[$typeKey]];
} else {
throw new RuntimeException('Unable to extract a reference id.');
}
}
