Frontend\Modules\Search\Engine\Model::validateSearch PHP Method

    public static function validateSearch()
    {
        // we'll iterate through the inactive search indices in little batches
        $offset = 0;
        $limit = 50;
        while (1) {
            // get the inactive indices
            $searchResults = (array) FrontendModel::getContainer()->get('database')->getRecords('SELECT module, other_id
                FROM search_index
                WHERE language = ? AND active = ?
                GROUP BY module, other_id
                LIMIT ?, ?', array(LANGUAGE, 'N', $offset, $limit));
            // none found? good news!
            if (!$searchResults) {
                return;
            }
            // prepare to send to modules
            $moduleResults = array();
            // loop the result set
            foreach ($searchResults as $searchResult) {
                $moduleResults[$searchResult['module']][] = $searchResult['other_id'];
            }
            // pass the results to the modules
            foreach ($moduleResults as $module => $otherIds) {
                // check if this module actually is prepared to handle searches
                $class = 'Frontend\\Modules\\' . $module . '\\Engine\\Model';
                if (is_callable(array($class, 'search'))) {
                    $moduleResults[$module] = call_user_func(array($class, 'search'), $otherIds);
                    // update the ones that are allowed to be searched through
                    self::statusIndex($module, array_keys($moduleResults[$module]), true);
                }
            }
            // didn't even get the amount of result we asked for? no need to ask again!
            if (count($searchResults) < $offset) {
                return;
            }
            $offset += $limit;
        }
    }