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<?php |
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namespace Wikibase\DataModel\Entity; |
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use InvalidArgumentException; |
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/** |
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* @since 4.2 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class DispatchingEntityIdParser implements EntityIdParser { |
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/** |
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* @var callable[] |
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*/ |
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private $idBuilders; |
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/** |
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* Takes an array in which each key is a preg_match pattern. |
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* The first pattern the id matches against will be picked. |
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* The value this key points to has to be a builder function |
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* that takes as only required argument the id serialization |
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* (string) and returns an EntityId instance. |
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* |
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* @param callable[] $idBuilders |
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*/ |
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public function __construct( array $idBuilders ) { |
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$this->idBuilders = $idBuilders; |
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} |
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/** |
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* @param string $idSerialization |
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* |
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* @throws EntityIdParsingException |
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* @return EntityId |
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*/ |
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public function parse( $idSerialization ) { |
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$this->assertIdIsString( $idSerialization ); |
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if ( empty( $this->idBuilders ) ) { |
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throw new EntityIdParsingException( 'No id builders are configured' ); |
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} |
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foreach ( $this->idBuilders as $idPattern => $idBuilder ) { |
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try { |
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list( , , $localId ) = EntityId::splitSerialization( $idSerialization ); |
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} catch ( InvalidArgumentException $ex ) { |
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// EntityId::splitSerialization performs some sanity checks which |
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// might result in an exception. Should this happen, re-throw the exception message |
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throw new EntityIdParsingException( $ex->getMessage() ); |
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} |
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if ( preg_match( $idPattern, $localId ) ) { |
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return $this->buildId( $idBuilder, $idSerialization ); |
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} |
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} |
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throw new EntityIdParsingException( |
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"The serialization \"$idSerialization\" is not recognized by the configured id builders" |
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); |
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} |
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/** |
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* @param string $idSerialization |
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* |
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* @throws EntityIdParsingException |
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*/ |
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private function assertIdIsString( $idSerialization ) { |
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if ( !is_string( $idSerialization ) ) { |
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throw new EntityIdParsingException( '$idSerialization must be a string' ); |
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} |
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} |
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/** |
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* @param callable $idBuilder |
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* @param string $idSerialization |
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* |
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* @throws EntityIdParsingException |
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* @return EntityId |
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*/ |
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private function buildId( $idBuilder, $idSerialization ) { |
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try { |
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return call_user_func( $idBuilder, $idSerialization ); |
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} catch ( InvalidArgumentException $ex ) { |
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// Should not happen, but if it does, re-throw the original message |
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throw new EntityIdParsingException( $ex->getMessage() ); |
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} |
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} |
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} |
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wmde /
WikibaseDataModel
