*/
public class SearchHelper {

    // ===================================================================================
    //                                                                            Constant
    //

    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(SearchHelper.class);

        final RoleQueryHelper roleQueryHelper = ComponentUtil.getRoleQueryHelper();
        final SearchHelper searchHelper = ComponentUtil.getSearchHelper();

        final StringBuilder buf = new StringBuilder(255);
        try {
            final RequestParameter parameter = RequestParameter.parse(request);
            final String[] langs = searchHelper.getLanguages(request, parameter);

    /** 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
    protected HttpServletRequest request;

    /** List of document items returned from search */

        if (!clickCountMap.isEmpty()) {
            final SearchHelper searchHelper = ComponentUtil.getSearchHelper();
            final FessConfig fessConfig = ComponentUtil.getFessConfig();
            try {
                final UpdateRequest[] updateRequests =
                        searchHelper

        if (isLoginRequired()) {
            return redirectToLogin();
        }

        Map<String, Object> doc = null;
        try {
            doc = searchHelper
                    .getDocumentByDocId(form.docId, new String[] { fessConfig.getIndexFieldUrl(), fessConfig.getIndexFieldConfigId() },
                            getUserBean())
                    .orElse(null);

        try {
            return facetCache.get(query + "\n" + permissionKey, () -> {
                final SearchHelper searchHelper = ComponentUtil.getSearchHelper();
                final SearchForm params = new SearchForm() {
                    @Override
                    public int getPageSize() {
                        return 0;