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<?php |
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namespace Xsolve\Associate\AssociationCollecting; |
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use Xsolve\Associate\CollectionTraversal\CollectionTraversalStrategyInterface; |
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use Xsolve\Associate\ObjectCollection\ObjectCollectionInterface; |
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use Xsolve\Associate\ObjectCollection\UniqueObjectCollection; |
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use Symfony\Component\PropertyAccess\PropertyAccess; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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class BasicAssociationCollectingStrategy implements AssociationCollectingStrategyInterface |
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{ |
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/** |
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* @var PropertyAccessor |
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*/ |
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protected $propertyAccessor; |
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/** |
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* @var CollectionTraversalStrategyInterface[] |
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*/ |
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protected $collectionTraversalStrategies = []; |
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public function __construct() |
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{ |
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$this->propertyAccessor = PropertyAccess::createPropertyAccessor(); |
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} |
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/** |
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* @param CollectionTraversalStrategyInterface $collectionTraversalStrategy |
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*/ |
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public function addCollectionTraversalStrategy(CollectionTraversalStrategyInterface $collectionTraversalStrategy) |
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{ |
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$this->collectionTraversalStrategies[] = $collectionTraversalStrategy; |
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} |
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/** |
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* @param array $objects |
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* @param string $associationName |
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* |
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* @return array |
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*/ |
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public function collect(array $objects, string $associationName): array |
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{ |
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$collectedAssociatedObjects = new UniqueObjectCollection(); |
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foreach ($objects as $object) { |
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$associatedObject = $this->propertyAccessor->getValue($object, $associationName); |
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if (!is_null($associatedObject)) { |
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$this->addAssociatedObjectsToCollection($collectedAssociatedObjects, $associatedObject); |
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} |
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} |
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return $collectedAssociatedObjects->getAll(); |
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} |
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/** |
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* @param ObjectCollectionInterface $objectCollection |
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* @param mixed $propertyValue |
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*/ |
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protected function addAssociatedObjectsToCollection(ObjectCollectionInterface $objectCollection, $propertyValue) |
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{ |
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$collectionTraversalStrategy = $this->getSupportingCollectionTraversalStrategy($propertyValue); |
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if ($collectionTraversalStrategy instanceof CollectionTraversalStrategyInterface) { |
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$collectionTraversalStrategy->traverse($objectCollection, $propertyValue); |
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return; |
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} |
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$objectCollection->addOne($propertyValue); |
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} |
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/** |
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* @param mixed $propertyValue |
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* |
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* @return CollectionTraversalStrategyInterface|null |
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*/ |
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protected function getSupportingCollectionTraversalStrategy($propertyValue) |
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{ |
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foreach ($this->collectionTraversalStrategies as $collectionTraversalStrategy) { |
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if ($collectionTraversalStrategy->supports($propertyValue)) { |
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return $collectionTraversalStrategy; |
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} |
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} |
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} |
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} |
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