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<?php |
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/* |
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* This file is part of the API Platform project. |
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* |
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* (c) Kévin Dunglas <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ApiPlatform\Core\Bridge\Doctrine\Orm\Extension; |
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use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryNameGeneratorInterface; |
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use ApiPlatform\Core\Metadata\Property\Factory\PropertyMetadataFactoryInterface; |
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use ApiPlatform\Core\Metadata\Property\Factory\PropertyNameCollectionFactoryInterface; |
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use Symfony\Component\PropertyInfo\Type; |
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use Doctrine\ORM\Mapping\ClassMetadataInfo; |
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use Doctrine\ORM\QueryBuilder; |
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/** |
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* Eager loads relations. |
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* |
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* @author Charles Sarrazin <[email protected]> |
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* @author Kévin Dunglas <[email protected]> |
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*/ |
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final class EagerLoadingExtension implements QueryCollectionExtensionInterface, QueryItemExtensionInterface |
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{ |
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private $propertyNameCollectionFactory; |
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private $propertyMetadataFactory; |
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public function __construct(PropertyNameCollectionFactoryInterface $propertyNameCollectionFactory, PropertyMetadataFactoryInterface $propertyMetadataFactory) |
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{ |
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$this->propertyMetadataFactory = $propertyMetadataFactory; |
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$this->propertyNameCollectionFactory = $propertyNameCollectionFactory; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null) |
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{ |
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$this->joinRelations($queryBuilder, $resourceClass); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function applyToItem(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, array $identifiers, string $operationName = null) |
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{ |
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$this->joinRelations($queryBuilder, $resourceClass); |
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} |
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public function getMetadataProperties($resourceClass): array { |
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$properties = []; |
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foreach ($this->propertyNameCollectionFactory->create($resourceClass) as $property) { |
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$properties[$property] = $this->propertyMetadataFactory->create($resourceClass, $property); |
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} |
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return $properties; |
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} |
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/** |
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* Left joins relations to eager load. |
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* |
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* @param QueryBuilder $queryBuilder |
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* @param string $resourceClass |
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*/ |
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private function joinRelations(QueryBuilder $queryBuilder, string $resourceClass, string $originAlias = 'o', string &$relationAlias = 'a') |
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{ |
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$classMetadata = $queryBuilder->getEntityManager()->getClassMetadata($resourceClass); |
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$j = 0; |
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foreach ($classMetadata->getAssociationNames() as $i => $association) { |
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$mapping = $classMetadata->associationMappings[$association]; |
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$propertyMetadata = $this->propertyMetadataFactory->create($resourceClass, $association); |
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if (ClassMetadataInfo::FETCH_EAGER !== $mapping['fetch'] || false === $propertyMetadata->isReadableLink()) { |
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continue; |
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} |
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$method = false === $mapping['joinColumns'][0]['nullable'] ? 'innerJoin' : 'leftJoin'; |
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$associationAlias = $relationAlias.$i; |
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$queryBuilder->{$method}($originAlias.'.'.$association, $associationAlias); |
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$select = []; |
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$targetClassMetadata = $queryBuilder->getEntityManager()->getClassMetadata($mapping['targetEntity']); |
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//@TODO useless at the moment, but Doctrine queries non-necessary relations because addSelect($associationAlias) lazy fetch every association |
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//By using this array of properties, it Lazy fetch association, which are initially in an INNER JOIN (fetches them twice ?!) |
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//If I try to use associationAlias when it has every property, but the properties array when it doesn't it fails because it can not fetch parent association |
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foreach ($this->getMetadataProperties($mapping['targetEntity']) as $property => $propertyMetadata) { |
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if (true === $targetClassMetadata->hasField($property) && true === $propertyMetadata->isReadableLink()) { |
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$select[] = $associationAlias.'.'.$property; |
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} |
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} |
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$queryBuilder->addSelect($associationAlias); |
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$relationAlias = $relationAlias.++$j; |
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$this->joinRelations($queryBuilder, $mapping['targetEntity'], $associationAlias, $relationAlias); |
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} |
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} |
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} |
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api-platform /
core
