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<?php |
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namespace Bankiru\Api\Doctrine\Persister; |
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use Bankiru\Api\Doctrine\ApiEntityManager; |
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use Bankiru\Api\Doctrine\Mapping\ApiMetadata; |
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use Bankiru\Api\Doctrine\Proxy\LazyCriteriaCollection; |
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use Bankiru\Api\Doctrine\Utility\IdentifierFixer; |
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use Doctrine\Common\Collections\ArrayCollection; |
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use Doctrine\Common\Collections\Collection; |
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use Doctrine\Common\Collections\Criteria; |
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use Doctrine\Common\Collections\Selectable; |
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final class CollectionPersister |
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{ |
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/** |
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* @var array |
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*/ |
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private $association; |
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/** |
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* @var ApiMetadata |
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*/ |
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private $metadata; |
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/** |
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* @var Selectable |
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*/ |
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private $matcher; |
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/** |
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* @var ApiEntityManager |
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*/ |
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private $manager; |
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/** |
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* CollectionPersister constructor. |
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* |
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* @param ApiEntityManager $manager |
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* @param ApiMetadata $metadata |
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* @param Selectable $matcher |
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* @param array $association |
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* |
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* @internal param CrudsApiInterface $api |
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*/ |
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public function __construct( |
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ApiEntityManager $manager, |
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ApiMetadata $metadata, |
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Selectable $matcher, |
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array $association |
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) { |
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$this->association = $association; |
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$this->metadata = $metadata; |
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$this->matcher = $matcher; |
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$this->manager = $manager; |
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} |
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/** |
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* Returns many to many collection for given identifiers. |
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* |
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* If every identifier is present in identifier map then initialized ArrayCollection is returned immediately |
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* |
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* @param array $identifiers |
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* |
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* @return Collection |
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*/ |
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public function getManyToManyCollection(array $identifiers) |
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{ |
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if ($this->metadata->isIdentifierComposite()) { |
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throw new \LogicException('Lazy loading entities with composite key is not supported'); |
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} |
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$collection = $this->prefetch($identifiers); |
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if (count($identifiers) === 0) { |
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return $collection; |
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} |
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return $this->createLazyCriteria($identifiers, $collection); |
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} |
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/** |
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* @param array $identifiers |
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* @param $collection |
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* |
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* @return LazyCriteriaCollection |
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*/ |
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private function createLazyCriteria(array $identifiers, $collection) |
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{ |
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$identifierFields = $this->metadata->getIdentifierFieldNames(); |
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$identifierField = array_shift($identifierFields); |
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$criteria = new Criteria(); |
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$criteria->andWhere(Criteria::expr()->in($identifierField, array_values($identifiers))); |
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if (null !== $this->association['orderBy']) { |
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$criteria->orderBy($this->association['orderBy']); |
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} |
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return new LazyCriteriaCollection($this->matcher, $criteria, $collection); |
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} |
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/** |
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* Prefetch some elements from identity map |
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* |
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* @param array $identifiers |
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* |
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* @return ArrayCollection |
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*/ |
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private function prefetch(array &$identifiers) |
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{ |
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$prefetched = []; |
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foreach ($identifiers as $key => $id) { |
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$id = IdentifierFixer::fixScalarId($id, $this->metadata); |
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if (false !== ($entity = $this->manager->getUnitOfWork()->tryGetById($id, $this->metadata->getName()))) { |
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$prefetched[] = $entity; |
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unset($identifiers[$key]); |
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} |
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} |
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return new ArrayCollection($prefetched); |
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} |
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} |
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bankiru /
doctrine-api-client
