wikimedia/mediawiki-extensions-CirrusSearch

<?php

namespace CirrusSearch\Search;

use Elastica\ResultSet as ElasticaResultSet;

/**
 * Returns titles and makes no effort to figure out how the titles matched.
 */
class TitleResultsType extends BaseResultsType {

    /**
     * @var TitleHelper
     */
    private $titleHelper;

    public function __construct( TitleHelper $titleHelper = null ) {
        $this->titleHelper = $titleHelper ?: new TitleHelper();
    }

    /**
     * @return array corresponding to Elasticsearch fields syntax
     */
    public function getFields() {
        return [];
    }

    /**
     * @param array $extraHighlightFields
     * @return array|null
     */
    public function getHighlightingConfiguration( array $extraHighlightFields = [] ) {
        return null;
    }

    /**
     * @param ElasticaResultSet $resultSet
     * @return mixed Set of search results, the types of which vary by implementation.
     */
    public function transformElasticsearchResult( ElasticaResultSet $resultSet ) {
        $results = [];
        foreach ( $resultSet->getResults() as $r ) {
            $results[] = $this->getTitleHelper()->makeTitle( $r );
        }
        return $results;
    }

    /**
     * @return array
     */
    public function createEmptyResult() {
        return [];
    }

    /**
     * @return TitleHelper
     */
    public function getTitleHelper(): TitleHelper {
        if ( $this->titleHelper === null ) {
            $this->titleHelper = new TitleHelper();
        }
        return $this->titleHelper;
    }
}