final QueryHelper queryHelper = ComponentUtil.getQueryHelper();
            if (!roleSet.isEmpty()) {
                queryHelper.buildRoleQuery(roleSet, boolQuery);
            }
            builder.setQuery(boolQuery);
            builder.setFetchSource(fields, null);
            queryHelper.processSearchPreference(builder, userBean, docId);
            return true;

         *
         * @param queryHelper the query helper
         * @param queryFieldConfig the query field configuration
         * @param fessConfig the Fess configuration
         */
        protected void buildRescorer(final QueryHelper queryHelper, final QueryFieldConfig queryFieldConfig, final FessConfig fessConfig) {

    /** Client for interacting with the search engine. */
    @Resource
    protected SearchEngineClient searchEngineClient;

    /** Helper for building and parsing search queries. */
    @Resource
    protected QueryHelper queryHelper;

    /** Helper for executing search operations. */
    @Resource
    protected SearchHelper searchHelper;

    /** HTTP servlet request for accessing request parameters. */
    @Resource