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<?php |
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namespace Wikibase\DataModel\Services\Lookup; |
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use Wikibase\DataModel\Entity\Property; |
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use Wikibase\DataModel\Entity\PropertyId; |
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/** |
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* PropertyDataTypeLookup that uses an EntityLookup to find |
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* a property's data type ID. |
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* |
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* @since 1.1 |
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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 EntityRetrievingDataTypeLookup implements PropertyDataTypeLookup { |
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/** |
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* @var EntityLookup |
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*/ |
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private $entityLookup; |
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private array $propertyIdsInProcess = []; |
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public function __construct( EntityLookup $entityLookup ) { |
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$this->entityLookup = $entityLookup; |
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} |
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/** |
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* @since 2.0 |
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* |
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* @param PropertyId $propertyId |
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* |
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* @return string |
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* @throws PropertyDataTypeLookupException |
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*/ |
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public function getDataTypeIdForProperty( PropertyId $propertyId ) { |
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if ( array_key_exists( $propertyId->getSerialization(), $this->propertyIdsInProcess ) ) { |
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// avoid self-referencing loop for newly created properties (T374230) |
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throw new PropertyDataTypeLookupException( $propertyId, 'loop detected' ); |
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} |
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$this->propertyIdsInProcess[ $propertyId->getSerialization() ] = true; |
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try { |
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return $this->getProperty( $propertyId )->getDataTypeId(); |
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} finally { |
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unset( $this->propertyIdsInProcess[ $propertyId->getSerialization() ] ); |
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} |
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} |
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/** |
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* @param PropertyId $propertyId |
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* |
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* @return Property |
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* @throws PropertyDataTypeLookupException |
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*/ |
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private function getProperty( PropertyId $propertyId ) { |
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$property = $this->entityLookup->getEntity( $propertyId ); |
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if ( !( $property instanceof Property ) ) { |
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throw new PropertyDataTypeLookupException( $propertyId ); |
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} |
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return $property; |
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} |
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} |
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wmde /
WikibaseDataModelServices
