public static final String MAPPING_TYPE_PDF_DATE = "pdf_date";

    public static final String PAGING_QUERY_LIST = "pagingQueryList";

    public static final String REQUEST_LANGUAGES = "requestLanguages";

    public static final String REQUEST_PAGE_SIZE = "requestPageSize";

    public static final String SEARCH_PREFERENCE_LOCAL = "_local";

    public static final String GSA_API_VERSION = "3.2";

        return LaRequestUtil.getOptionalRequest().map(request -> ComponentUtil.getFessConfig().getQueryLanguages(request.getLocales(),
                (String[]) request.getAttribute(Constants.REQUEST_LANGUAGES)));
    }

    protected DefaultQueryBuilder buildDefaultQueryBuilder(final FessConfig fessConfig, final QueryContext context,
            final DefaultQueryBuilderFunction builder) {

        final SearchRequestParams params = rewrite(searchRequestParams);

        LaRequestUtil.getOptionalRequest().ifPresent(request -> {
            request.setAttribute(Constants.REQUEST_LANGUAGES, params.getLanguages());
            request.setAttribute(Constants.REQUEST_QUERIES, params.getQuery());
        });

            } else {
                searchLog.setAccessType(Constants.SEARCH_LOG_ACCESS_TYPE_WEB);
            }
            final Object languages = req.getAttribute(Constants.REQUEST_LANGUAGES);
            if (languages != null) {
                searchLog.setLanguages(StringUtils.join((String[]) languages, ","));
            } else {
                searchLog.setLanguages(StringUtil.EMPTY);