wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\DataModel\Services\Lookup;

use Wikibase\DataModel\Entity\EntityId;
use Wikibase\DataModel\Term\Term;

/**
 * @since 1.1
 *
 * @license GPL-2.0-or-later
 * @author Katie Filbert < aude.wiki@gmail.com >
 * @author Marius Hoch < hoo@online.de >
 * @author Addshore
 */
class LanguageLabelDescriptionLookup implements LabelDescriptionLookup {

    /**
     * @var TermLookup
     */
    private $termLookup;

    /**
     * @var string
     */
    private $languageCode;

    /**
     * @param TermLookup $termLookup
     * @param string $languageCode
     */
    public function __construct( TermLookup $termLookup, $languageCode ) {
        $this->termLookup = $termLookup;
        $this->languageCode = $languageCode;
    }

    /**
     * @param EntityId $entityId
     *
     * @throws LabelDescriptionLookupException
     * @return Term|null
     */
    public function getLabel( EntityId $entityId ) {
        try {
            $text = $this->termLookup->getLabel( $entityId, $this->languageCode );
        } catch ( TermLookupException $ex ) {
            throw new LabelDescriptionLookupException( $entityId, 'Failed to lookup label', $ex );
        }

        if ( $text === null ) {
            return null;
        }

        return new Term( $this->languageCode, $text );
    }

    /**
     * @param EntityId $entityId
     *
     * @throws LabelDescriptionLookupException
     * @return Term|null
     */
    public function getDescription( EntityId $entityId ) {
        try {
            $text = $this->termLookup->getDescription( $entityId, $this->languageCode );
        } catch ( TermLookupException $ex ) {
            throw new LabelDescriptionLookupException( $entityId, 'Failed to lookup description', $ex );
        }

        if ( $text === null ) {
            return null;
        }

        return new Term( $this->languageCode, $text );
    }

}