wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Repo\Rdf\Values;

use DataValues\DataValue;
use Wikibase\DataModel\Snak\PropertyValueSnak;
use Wikibase\Repo\Rdf\ValueSnakRdfBuilder;
use Wikimedia\Purtle\RdfWriter;

/**
 * RDF mapping for DataValues that map to a resource (object) URI.
 *
 * @license GPL-2.0-or-later
 * @author Daniel Kinzler
 * @author Stas Malyshev
 */
class ObjectUriRdfBuilder implements ValueSnakRdfBuilder {

    /**
     * Adds specific value
     *
     * @param RdfWriter $writer
     * @param string $propertyValueNamespace Property value relation namespace
     * @param string $propertyValueLName Property value relation name
     * @param string $dataType Property data type
     * @param string $snakNamespace
     * @param PropertyValueSnak $snak
     */
    public function addValue(
        RdfWriter $writer,
        $propertyValueNamespace,
        $propertyValueLName,
        $dataType,
        $snakNamespace,
        PropertyValueSnak $snak
    ) {
        $uri = $this->getValueUri( $snak->getDataValue() );

        $writer->say( $propertyValueNamespace, $propertyValueLName )->is( $uri );
    }

    /**
     * @param DataValue $value
     *
     * @return string the object URI
     */
    protected function getValueUri( DataValue $value ) {
        return trim( $value->getValue() );
    }

}