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<?php |
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/* |
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* This file is part of Sulu. |
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* |
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* (c) MASSIVE ART WebServices GmbH |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Sulu\Component\DocumentManager\Subscriber\Core; |
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use PHPCR\NodeInterface; |
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use Sulu\Component\DocumentManager\Event\CreateEvent; |
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use Sulu\Component\DocumentManager\Event\HydrateEvent; |
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use Sulu\Component\DocumentManager\Events; |
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use Sulu\Component\DocumentManager\Metadata; |
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use Sulu\Component\DocumentManager\MetadataFactoryInterface; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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/** |
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* Responsible for instantiating documents from PHPCR nodes and |
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* setting the document in the event so that other listeners can |
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* take further actions (such as hydrating it for example). |
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* |
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* NOTE: This should always be the first thing to be called |
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*/ |
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class InstantiatorSubscriber implements EventSubscriberInterface |
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{ |
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/** |
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* @var MetadataFactoryInterface |
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*/ |
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private $metadataFactory; |
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/** |
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* @param MetadataFactoryInterface $metadataFactory |
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*/ |
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public function __construct( |
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MetadataFactoryInterface $metadataFactory |
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) { |
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$this->metadataFactory = $metadataFactory; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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Events::HYDRATE => ['handleHydrate', 500], |
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Events::CREATE => ['handleCreate', 500], |
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]; |
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} |
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/** |
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* @param HydrateEvent $event |
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*/ |
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public function handleHydrate(HydrateEvent $event) |
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{ |
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// don't need to instantiate the document if it is already existing. |
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if ($event->hasDocument()) { |
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return; |
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} |
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$node = $event->getNode(); |
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$document = $this->getDocumentFromNode($node); |
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$event->setDocument($document); |
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} |
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/** |
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* @param mixed $event |
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*/ |
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public function handleCreate(CreateEvent $event) |
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{ |
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$metadata = $this->metadataFactory->getMetadataForAlias($event->getAlias()); |
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$document = $this->instantiateFromMetadata($metadata); |
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$event->setDocument($document); |
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} |
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/** |
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* Instantiate a new document. The class is determined from |
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* the mixins present in the PHPCR node for legacy reasons. |
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* |
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* @param NodeInterface $node |
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* |
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* @return object |
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*/ |
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private function getDocumentFromNode(NodeInterface $node) |
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{ |
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$metadata = $this->metadataFactory->getMetadataForPhpcrNode($node); |
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return $this->instantiateFromMetadata($metadata); |
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} |
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/** |
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* @param Metadata $metadata |
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* |
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* @return object |
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*/ |
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private function instantiateFromMetadata(Metadata $metadata) |
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{ |
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$class = $metadata->getClass(); |
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if (!class_exists($class)) { |
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throw new \RuntimeException(sprintf( |
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'Document class "%s" does not exist', $class |
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)); |
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} |
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$document = new $class(); |
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return $document; |
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} |
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} |
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sulu-io /
sulu-document-manager
