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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Cache;
use Doctrine\Common\Util\ClassUtils;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\Query;
use Doctrine\ORM\UnitOfWork;
use Doctrine\ORM\Utility\IdentifierFlattener;
use function array_merge;
use function assert;
use function is_array;
use function is_object;
use function reset;
/**
* Default hydrator cache for entities
*/
class DefaultEntityHydrator implements EntityHydrator
{
/** @var EntityManagerInterface */
private $em;
/** @var UnitOfWork */
private $uow;
/**
* The IdentifierFlattener used for manipulating identifiers
*
* @var IdentifierFlattener
*/
private $identifierFlattener;
/** @var array<string,mixed> */
private static $hints = [Query::HINT_CACHE_ENABLED => true];
/** @param EntityManagerInterface $em The entity manager. */
public function __construct(EntityManagerInterface $em)
{
$this->em = $em;
$this->uow = $em->getUnitOfWork();
$this->identifierFlattener = new IdentifierFlattener($em->getUnitOfWork(), $em->getMetadataFactory());
}
/**
* {@inheritdoc}
*/
public function buildCacheEntry(ClassMetadata $metadata, EntityCacheKey $key, $entity)
{
$data = $this->uow->getOriginalEntityData($entity);
$data = array_merge($data, $metadata->getIdentifierValues($entity)); // why update has no identifier values ?
if ($metadata->requiresFetchAfterChange) {
if ($metadata->isVersioned) {
assert($metadata->versionField !== null);
$data[$metadata->versionField] = $metadata->getFieldValue($entity, $metadata->versionField);
}
foreach ($metadata->fieldMappings as $name => $fieldMapping) {
if (isset($fieldMapping['generated'])) {
$data[$name] = $metadata->getFieldValue($entity, $name);
}
}
}
foreach ($metadata->associationMappings as $name => $assoc) {
if (! isset($data[$name])) {
continue;
}
if (! ($assoc['type'] & ClassMetadata::TO_ONE)) {
unset($data[$name]);
continue;
}
if (! isset($assoc['cache'])) {
$targetClassMetadata = $this->em->getClassMetadata($assoc['targetEntity']);
$owningAssociation = ! $assoc['isOwningSide']
? $targetClassMetadata->associationMappings[$assoc['mappedBy']]
: $assoc;
$associationIds = $this->identifierFlattener->flattenIdentifier(
$targetClassMetadata,
$targetClassMetadata->getIdentifierValues($data[$name])
);
unset($data[$name]);
foreach ($associationIds as $fieldName => $fieldValue) {
if (isset($targetClassMetadata->fieldMappings[$fieldName])) {
$fieldMapping = $targetClassMetadata->fieldMappings[$fieldName];
$data[$owningAssociation['targetToSourceKeyColumns'][$fieldMapping['columnName']]] = $fieldValue;
continue;
}
$targetAssoc = $targetClassMetadata->associationMappings[$fieldName];
foreach ($assoc['targetToSourceKeyColumns'] as $referencedColumn => $localColumn) {
if (isset($targetAssoc['sourceToTargetKeyColumns'][$referencedColumn])) {
$data[$localColumn] = $fieldValue;
}
}
}
continue;
}
if (! isset($assoc['id'])) {
$targetClass = ClassUtils::getClass($data[$name]);
$targetId = $this->uow->getEntityIdentifier($data[$name]);
$data[$name] = new AssociationCacheEntry($targetClass, $targetId);
continue;
}
// handle association identifier
$targetId = is_object($data[$name]) && $this->uow->isInIdentityMap($data[$name])
? $this->uow->getEntityIdentifier($data[$name])
: $data[$name];
// @TODO - fix it !
// handle UnitOfWork#createEntity hash generation
if (! is_array($targetId)) {
$data[reset($assoc['joinColumnFieldNames'])] = $targetId;
$targetEntity = $this->em->getClassMetadata($assoc['targetEntity']);
$targetId = [$targetEntity->identifier[0] => $targetId];
}
$data[$name] = new AssociationCacheEntry($assoc['targetEntity'], $targetId);
}
return new EntityCacheEntry($metadata->name, $data);
}
/**
* {@inheritdoc}
*/
public function loadCacheEntry(ClassMetadata $metadata, EntityCacheKey $key, EntityCacheEntry $entry, $entity = null)
{
$data = $entry->data;
$hints = self::$hints;
if ($entity !== null) {
$hints[Query::HINT_REFRESH] = true;
$hints[Query::HINT_REFRESH_ENTITY] = $entity;
}
foreach ($metadata->associationMappings as $name => $assoc) {
if (! isset($assoc['cache']) || ! isset($data[$name])) {
continue;
}
$assocClass = $data[$name]->class;
$assocId = $data[$name]->identifier;
$isEagerLoad = ($assoc['fetch'] === ClassMetadata::FETCH_EAGER || ($assoc['type'] === ClassMetadata::ONE_TO_ONE && ! $assoc['isOwningSide']));
if (! $isEagerLoad) {
$data[$name] = $this->em->getReference($assocClass, $assocId);
continue;
}
$assocMetadata = $this->em->getClassMetadata($assoc['targetEntity']);
$assocKey = new EntityCacheKey($assocMetadata->rootEntityName, $assocId);
$assocPersister = $this->uow->getEntityPersister($assoc['targetEntity']);
$assocRegion = $assocPersister->getCacheRegion();
$assocEntry = $assocRegion->get($assocKey);
if ($assocEntry === null) {
return null;
}
$data[$name] = $this->uow->createEntity($assocEntry->class, $assocEntry->resolveAssociationEntries($this->em), $hints);
}
if ($entity !== null) {
$this->uow->registerManaged($entity, $key->identifier, $data);
}
$result = $this->uow->createEntity($entry->class, $data, $hints);
$this->uow->hydrationComplete();
return $result;
}
}
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