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<?php |
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namespace Halapi\Relation; |
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use Doctrine\Common\Annotations\Annotation; |
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use Doctrine\Common\Collections\Collection; |
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/** |
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* Class LinksRelation |
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* @author Romain Richard |
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*/ |
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class LinksRelation extends AbstractRelation implements RelationInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return '_links'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getRelation($resource) |
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{ |
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$reflectionClass = new \ReflectionClass($resource); |
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$links = $this->getSelfLink($resource, $reflectionClass); |
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foreach ($reflectionClass->getProperties() as $property) { |
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if ($this->isEmbeddable($property) && $property->getName()) { |
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$propertyName = $property->getName(); |
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$relationContent = $resource->{'get'.ucfirst($propertyName)}(); |
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$links[$propertyName] = $this->getRelationLinks($property, $relationContent); |
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if (!$links[$propertyName]) { |
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unset($links[$propertyName]); |
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} |
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} |
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} |
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return $links; |
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} |
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/** |
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* @param \ReflectionProperty $property |
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* @param object $relationContent |
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* @return string|null |
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* @throws \Doctrine\ORM\Mapping\MappingException |
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*/ |
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protected function getRelationLink($property, $relationContent) |
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{ |
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/** |
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* @var $annotation Annotation |
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*/ |
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foreach ($this->annotationReader->getPropertyAnnotations($property) as $annotation) { |
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if (isset($annotation->targetEntity)) { |
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$shortName = strtolower((new \ReflectionClass($annotation->targetEntity))->getShortName()); |
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return $this->urlGenerator->generate( |
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'get_'.$shortName, |
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[$shortName => $this->getEntityId($relationContent)] |
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); |
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} |
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} |
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return null; |
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} |
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/** |
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* Get the url of an entity based on the 'get_entity' route pattern. |
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* |
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* @param $resource |
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* @param \ReflectionClass $reflectionClass |
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* |
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* @return array|null |
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*/ |
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private function getSelfLink($resource, $reflectionClass) |
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{ |
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if ($resource instanceof \Traversable) { |
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return null; |
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} |
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return [ |
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'self' => $this->urlGenerator->generate( |
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'get_'.strtolower($reflectionClass->getShortName()), |
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[strtolower($reflectionClass->getShortName()) => $this->getEntityId($resource)] |
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), |
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]; |
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} |
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/** |
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* Get the links of a collection. |
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* |
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* @param \ReflectionProperty $property |
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* @param $relationContent |
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* |
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* @return array|void |
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*/ |
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private function getRelationLinks($property, $relationContent) |
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{ |
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if ($relationContent instanceof Collection) { |
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$links = []; |
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foreach ($relationContent as $relation) { |
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$links[] = $this->getRelationLink($property, $relation); |
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} |
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return $links; |
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} |
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return $this->getRelationLink($property, $relationContent); |
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} |
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/** |
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* Returns entity single identifier. |
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* This is a compatibility-limiting feature as it will not be able to get the identity |
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* of an entity which has multiple identifiers. |
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* @param $entity |
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*/ |
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private function getEntityId($entity) |
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{ |
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$meta = $this->entityManager->getClassMetadata(get_class($entity)); |
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$identifier = $meta->getIdentifier()[0]; |
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$getter = 'get'.ucfirst($identifier); |
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return $entity->$getter(); |
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} |
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} |
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BigZ /
Halapi
