wikimedia/mediawiki-extensions-CirrusSearch

<?php

namespace CirrusSearch\Search;

use SearchEngine;
use SearchIndexField;

class NestedIndexField extends CirrusIndexField {
    /** @inheritDoc */
    protected $typeName = "nested";

    /**
     * Add sub-field for nested field
     * @param string $name Field name
     * @param SearchIndexField $subfield Field object
     */
    public function addSubfield( $name, SearchIndexField $subfield ) {
        $this->subfields[$name] = $subfield;
    }

    public function getMapping( SearchEngine $engine ) {
        $fields = parent::getMapping( $engine );
        foreach ( $this->subfields as $name => $sub ) {
            $fields['properties'][$name] = $sub->getMapping( $engine );
        }
        return $fields;
    }
}