}

    public static String[] getParamValueArray(final HttpServletRequest request, final String param) {
        return simplifyArray(request.getParameterValues(param));
    }

    protected FacetInfo createFacetInfo(final HttpServletRequest request) {
        final String[] fields = getParamValueArray(request, "facet.field");
        final String[] queries = getParamValueArray(request, "facet.query");

        protected static RequestParameter parse(final HttpServletRequest request) {
            final String query = request.getParameter("q");
            final String[] tags = getParamValueArray(request, "label");
            final String[] fields = getParamValueArray(request, "field");

            final String numStr = request.getParameter("num");
            final int num;