final StringBuilder buf = new StringBuilder(1000);
        request.setAttribute(Constants.SEARCH_LOG_ACCESS_TYPE, Constants.SEARCH_LOG_ACCESS_TYPE_JSON);
        try {
            final SearchRenderData data = new SearchRenderData();
            final JsonRequestParams params = new JsonRequestParams(request, fessConfig);
            query = params.getQuery();
            searchHelper.search(params, data, OptionalThing.empty());