}

    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() {

        String userCode = sessionManager.getAttribute(USER_BEAN, TypicalUserBean.class)
                .filter(u -> !Constants.EMPTY_USER_ID.equals(u.getUserId())).map(u -> u.getUserId().toString()).orElse(StringUtil.EMPTY);
        if (StringUtil.isBlank(userCode)) {
            return null;
        }

        userCode = createUserCodeFromUserId(userCode);
        request.setAttribute(Constants.USER_CODE, userCode);

        final SearchRequestParams params = rewrite(searchRequestParams);

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

        String query = ComponentUtil.getQueryStringBuilder().params(params).sortField(params.getSort()).build();

                    }
                }
                if (uaType == null) {
                    uaType = UserAgentType.OTHER;
                }
                request.setAttribute(USER_AGENT_TYPE, uaType);
            }
            return uaType;
        }).orElse(UserAgentType.OTHER);
    }

    public enum UserAgentType {
        IE, FIREFOX, CHROME, SAFARI, OPERA, OTHER;
    }

        final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        if (!external) {
            try {
                factory.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, "");
                factory.setAttribute(XMLConstants.ACCESS_EXTERNAL_SCHEMA, "");
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {

                formBuf.append(StringEscapeUtils.escapeHtml4(entry.getKey()));
                formBuf.append("\"/>");
            }
            request.setAttribute(queryKey, queryBuf.toString());
            request.setAttribute(formKey, formBuf.toString());
        }
    }

    protected HtmlResponse redirectToLogin() {
        return systemHelper.getRedirectResponseToLogin(redirect(SsoAction.class));

    }

    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;
        });
    }

                highlightedQuerySet = new HashSet<>();
                request.setAttribute(Constants.HIGHLIGHT_QUERIES, highlightedQuerySet);
                fieldLogMap = (Map<String, List<String>>) request.getAttribute(Constants.FIELD_LOGS);
                if (fieldLogMap == null) {
                    fieldLogMap = new HashMap<>();
                    request.setAttribute(Constants.FIELD_LOGS, fieldLogMap);
                }
            });

            }

            if (linkMetaData.urlFragment) {
                href = "$href#$linkMetaData.urlFragment"
            }

            ulinkElement.setAttribute('url', href)

            Element classNameElement = doc.createElement('classname')
            ulinkElement.appendChild(classNameElement)

    protected FormatType getFormatType(final HttpServletRequest request) {
        FormatType formatType = (FormatType) request.getAttribute(API_FORMAT_TYPE);
        if (formatType != null) {
            return formatType;
        }

        formatType = detectFormatType(request);
        request.setAttribute(API_FORMAT_TYPE, formatType);
        return formatType;
    }