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<?php |
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namespace Wikibase\EntityStore\Cache; |
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use Wikibase\DataModel\Entity\EntityId; |
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use Wikibase\EntityStore\EntityDocumentLookup; |
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/** |
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* Internal class |
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* |
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* @licence GPLv2+ |
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* @author Thomas Pellissier Tanon |
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*/ |
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class CachedEntityDocumentLookup implements EntityDocumentLookup { |
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/** |
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* @var EntityDocumentLookup |
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*/ |
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private $entityLookup; |
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/** |
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* @var EntityDocumentCache |
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*/ |
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private $entityCache; |
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/** |
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* @param EntityDocumentLookup $entityLookup |
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* @param EntityDocumentCache $entityCache |
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*/ |
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public function __construct( EntityDocumentLookup $entityLookup, EntityDocumentCache $entityCache ) { |
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$this->entityLookup = $entityLookup; |
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$this->entityCache = $entityCache; |
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} |
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/** |
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* @see EntityDocumentLookup::getEntityDocumentForId |
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*/ |
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public function getEntityDocumentForId( EntityId $entityId ) { |
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$entity = $this->entityCache->fetch( $entityId ); |
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if( $entity === null ) { |
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$entity = $this->entityLookup->getEntityDocumentForId( $entityId ); |
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if( $entity !== null ) { |
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$this->entityCache->save( $entity ); |
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} |
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} |
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return $entity; |
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} |
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/** |
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* @see EntityDocumentLookup::getEntityDocumentsForIds |
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*/ |
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public function getEntityDocumentsForIds( array $entityIds ) { |
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$entities = []; |
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$entityIdsToRetrieve = []; |
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foreach( $entityIds as $entityId ) { |
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$entity = $this->entityCache->fetch( $entityId ); |
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if( $entity === null ) { |
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$entityIdsToRetrieve[] = $entityId; |
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} else { |
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$entities[] = $entity; |
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} |
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} |
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$additionalEntities = []; |
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if( !empty( $entityIdsToRetrieve ) ) { |
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$additionalEntities = $this->entityLookup->getEntityDocumentsForIds( $entityIdsToRetrieve ); |
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} |
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foreach( $additionalEntities as $entity ) { |
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$this->entityCache->save( $entity ); |
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} |
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return array_merge( $entities, $additionalEntities ); |
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} |
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} |
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ProjetPP /
WikibaseEntityStore
