}
            });

    protected FessFunctions() {
        // nothing
    }

    public static Boolean labelExists(final String value) {
        return LaRequestUtil.getOptionalRequest().map(req -> {
            @SuppressWarnings("unchecked")
            final Map<String, String> labelValueMap = (Map<String, String>) req.getAttribute(Constants.LABEL_VALUE_MAP);
            if (labelValueMap != null) {

        LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(WEB_API_EXCEPTION, new WebApiException(statusCode, message)));
    }

    public static void setError(final int statusCode, final Exception e) {
        LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(WEB_API_EXCEPTION, new WebApiException(statusCode, e)));
    }

    public static void validate() {

    }

    public String getVirtualHostKey() {
        return LaRequestUtil.getOptionalRequest().map(req -> (String) req.getAttribute(FessConfig.VIRTUAL_HOST_VALUE)).orElseGet(() -> {
            final String value = processVirtualHost(s -> s, StringUtil.EMPTY);
            LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(FessConfig.VIRTUAL_HOST_VALUE, value));
            return value;
        });

    protected String cookiePath = "/";

    protected Boolean cookieSecure;

    protected boolean httpOnly = true;

    public String getUserCode() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            String userCode = (String) request.getAttribute(Constants.USER_CODE);
            if (StringUtil.isNotBlank(userCode)) {
                return userCode;
            }

        return stream(lang).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override
    public GeoInfo getGeoInfo() {
        return LaRequestUtil.getOptionalRequest().map(this::createGeoInfo)
                .orElseGet(() -> ComponentUtil.getQueryHelper().getDefaultGeoInfo());
    }

    @Override
    public FacetInfo getFacetInfo() {

        });
        return new SettingsBuilder().fromValues(params).build();
    }

    @Override
    public LoginCredential getLoginCredential() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            if (logger.isDebugEnabled()) {
                logger.debug("Logging in with SAML Authenticator");
            }

    protected static final String USER_AGENT = "user-agent";

    protected static final String USER_AGENT_TYPE = "ViewHelper.UserAgent";

    public UserAgentType getUserAgentType() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            UserAgentType uaType = (UserAgentType) request.getAttribute(USER_AGENT_TYPE);
            if (uaType == null) {
                final String userAgent = request.getHeader(USER_AGENT);

        final long startTime = systemHelper.getCurrentTimeAsLong();
        final long requestedTime = startTime;

        final SearchRequestParams params = rewrite(searchRequestParams);

        LaRequestUtil.getOptionalRequest().ifPresent(request -> {
            request.setAttribute(Constants.REQUEST_LANGUAGES, params.getLanguages());
            request.setAttribute(Constants.REQUEST_QUERIES, params.getQuery());
        });

        } else {
            buf.append(contentType);
        }
        buf.append("; charset=");
        final String enc;
        if (encoding == null) {
            enc = LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getCharacterEncoding).orElse(Constants.UTF_8);
        } else {
            enc = encoding;
        }
        buf.append(enc);

        if (!pathMapping.hasUAMathcer()) {
            return true;
        }

        if (SingletonLaContainerFactory.getExternalContext().getRequest() != null) {
            return LaRequestUtil.getOptionalRequest().map(request -> {
                final String userAgent = request.getHeader("user-agent");
                if (StringUtil.isBlank(userAgent)) {
                    return false;
                }