wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Client;

use CirrusSearch\Query\MoreLikeFeature;
use CirrusSearch\Search\SearchContext;
use Elastica\Query\Exists;

/**
 * Wikibase extension for MoreLike feature
 * @license GPL-2.0-or-later
 */
class MoreLikeWikibase extends MoreLikeFeature {
    private const MORE_LIKE_THIS_JUST_WIKIBASE = 'morelikewithwikibase';

    protected function getKeywords() {
        return [ self::MORE_LIKE_THIS_JUST_WIKIBASE ];
    }

    protected function doApply( SearchContext $context, $key, $value, $quotedValue, $negated ) {
        parent::doApply( $context, $key, $value, $quotedValue, $negated );
        $wbFilter = new Exists( 'wikibase_item' );
        return [ $wbFilter, false ];
    }

}