final Object url = params.get("url");
        if (url == null) {
            return StringUtil.EMPTY_STRINGS;
        }
        final SearchResponse response = client.prepareSearch(index).setQuery(QueryBuilders.termQuery(fessConfig.getIndexFieldUrl(), url))
                .setFetchSource(false).setSize(fessConfig.getPageScoreBoosterMaxFetchSizeAsInteger()).execute().actionGet(requestTimeout);

        client.search(request, listener);
    }

    @Override
    public SearchRequestBuilder prepareSearch(final String... indices) {
        return client.prepareSearch(indices);
    }

    @Override
    public ActionFuture<SearchResponse> searchScroll(final SearchScrollRequest request) {
        return client.searchScroll(request);
    }

    protected long getDocumentSizeByQuery(final SearchEngineClient searchEngineClient, final QueryBuilder queryBuilder,
            final FessConfig fessConfig) {
        final SearchResponse countResponse = searchEngineClient.prepareSearch(fessConfig.getIndexDocumentUpdateIndex())
                .setQuery(queryBuilder).setSize(0).setTrackTotalHits(true).execute().actionGet(fessConfig.getIndexSearchTimeout());