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<?php |
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namespace Wikibase\DataModel\Services\Diff; |
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use InvalidArgumentException; |
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use RuntimeException; |
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use Wikibase\DataModel\Entity\EntityDocument; |
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/** |
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* @since 1.0 |
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* |
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* @license GPL-2.0-or-later |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class EntityDiffer { |
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/** |
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* @var EntityDifferStrategy[] |
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*/ |
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private $differStrategies; |
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public function __construct() { |
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$this->registerEntityDifferStrategy( new ItemDiffer() ); |
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$this->registerEntityDifferStrategy( new PropertyDiffer() ); |
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} |
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public function registerEntityDifferStrategy( EntityDifferStrategy $differStrategy ) { |
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$this->differStrategies[] = $differStrategy; |
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} |
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/** |
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* @param EntityDocument $from |
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* @param EntityDocument $to |
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* |
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* @return EntityDiff |
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* @throws InvalidArgumentException |
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* @throws RuntimeException |
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*/ |
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public function diffEntities( EntityDocument $from, EntityDocument $to ) { |
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$this->assertTypesMatch( $from, $to ); |
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return $this->getDiffStrategy( $from->getType() )->diffEntities( $from, $to ); |
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} |
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private function assertTypesMatch( EntityDocument $from, EntityDocument $to ) { |
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if ( $from->getType() !== $to->getType() ) { |
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throw new InvalidArgumentException( 'Can only diff two entities of the same type' ); |
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} |
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} |
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/** |
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* @param string $entityType |
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* |
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* @throws RuntimeException |
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* @return EntityDifferStrategy |
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*/ |
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private function getDiffStrategy( $entityType ) { |
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foreach ( $this->differStrategies as $diffStrategy ) { |
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if ( $diffStrategy->canDiffEntityType( $entityType ) ) { |
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return $diffStrategy; |
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} |
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} |
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throw new RuntimeException( 'Diffing the provided types of entities is not supported' ); |
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} |
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/** |
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* @param EntityDocument $entity |
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* |
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* @return EntityDiff |
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* @throws InvalidArgumentException |
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*/ |
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public function getConstructionDiff( EntityDocument $entity ) { |
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return $this->getDiffStrategy( $entity->getType() )->getConstructionDiff( $entity ); |
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} |
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/** |
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* @param EntityDocument $entity |
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* |
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* @return EntityDiff |
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* @throws InvalidArgumentException |
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*/ |
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public function getDestructionDiff( EntityDocument $entity ) { |
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return $this->getDiffStrategy( $entity->getType() )->getDestructionDiff( $entity ); |
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} |
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} |
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wmde /
WikibaseDataModelServices
