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<?php |
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namespace PPP\Wikidata\ValueFormatters\JsonLd\Entity; |
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use DataValues\StringValue; |
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use OutOfBoundsException; |
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use Wikibase\DataModel\Entity\Item; |
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use Wikibase\DataModel\Entity\Property; |
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use Wikibase\DataModel\Entity\PropertyId; |
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use Wikibase\DataModel\Snak\PropertyValueSnak; |
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use Wikibase\DataModel\Statement\StatementListProvider; |
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/** |
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* @licence AGPLv3+ |
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* @author Thomas Pellissier Tanon |
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*/ |
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class EntityOntology { |
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const OWL_EQUIVALENT_PROPERTY = 'http://www.w3.org/2002/07/owl#equivalentProperty'; |
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const QUDT_SYMBOL = 'http://qudt.org/schema/qudt#symbol'; |
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/** |
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* @var PropertyId[] |
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*/ |
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private $propertyForIris; |
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/** |
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* @param PropertyId[] $propertyForIris |
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*/ |
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public function __construct(array $propertyForIris) { |
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$this->propertyForIris = $propertyForIris; |
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} |
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/** |
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* @param Property $property |
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* @return string[] |
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*/ |
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public function getEquivalentPropertiesIris(Property $property) { |
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return $this->getTextualContentForIri($property, self::OWL_EQUIVALENT_PROPERTY); |
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} |
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/** |
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* @param Item $item |
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* @return string |
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* @throws OutOfBoundsException |
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*/ |
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public function getUnitSymbol(Item $item) { |
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$symbols = $this->getTextualContentForIri($item, self::QUDT_SYMBOL); |
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if(empty($symbols)) { |
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throw new OutOfBoundsException(); |
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} else { |
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return reset($symbols); |
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} |
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} |
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private function getTextualContentForIri(StatementListProvider $statementListProvider, $iri) { |
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if(!array_key_exists($iri, $this->propertyForIris)) { |
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return array(); |
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} |
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return $this->getTextualContentForProperty($statementListProvider, $this->propertyForIris[$iri]); |
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} |
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private function getTextualContentForProperty(StatementListProvider $statementListProvider, PropertyId $propertyId) { |
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$snaks = $statementListProvider->getStatements()->getByPropertyId($propertyId)->getBestStatements()->getMainSnaks(); |
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$iris = array(); |
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foreach($snaks as $snak) { |
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if($snak instanceof PropertyValueSnak) { |
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$dataValue = $snak->getDataValue(); |
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if($dataValue instanceof StringValue) { |
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$iris[] = $snak->getDataValue()->getValue(); |
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} |
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} |
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} |
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return $iris; |
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} |
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} |
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ProjetPP /
PPP-Wikidata
