public void renderFormUrl()

in core/src/main/java/org/apache/struts2/components/ServletUrlRenderer.java [140:249]
76 lines of code
16 McCabe index (conditional complexity)

    public void renderFormUrl(Form formComponent) {
        String namespace = formComponent.determineNamespace(formComponent.namespace, formComponent.getStack(), formComponent.request);
        String action;

        ValueStack vs = ActionContext.getContext().getValueStack();
        String scheme = vs.findString("scheme");

        if (formComponent.action != null) {
            action = formComponent.findString(formComponent.action);
        } else {
            // no action supplied? ok, then default to the current request
            // (action or general URL)
            ActionInvocation ai = formComponent.getStack().getActionContext().getActionInvocation();
            if (ai != null) {
                action = ai.getProxy().getActionName();
                namespace = ai.getProxy().getNamespace();
            } else {
                // hmm, ok, we need to just assume the current URL cut down
                String uri = formComponent.request.getRequestURI();
                action = uri.substring(uri.lastIndexOf('/'));
            }
        }

        QueryStringParser.Result queryStringResult = queryStringParser.empty();
        if (action != null && action.indexOf('?') > 0) {
            String queryString = action.substring(action.indexOf('?') + 1);
            queryStringResult = queryStringParser.parse(queryString);
            action = action.substring(0, action.indexOf('?'));
        }

        ActionMapping nameMapping = actionMapper.getMappingFromActionName(action);
        String actionName = nameMapping.getName();
        String actionMethod = nameMapping.getMethod();

        final ActionConfig actionConfig = formComponent.configuration.getRuntimeConfiguration().getActionConfig(
            namespace, actionName);
        if (actionConfig != null) {

            ActionMapping mapping = new ActionMapping(actionName, namespace, actionMethod, formComponent.attributes);
            String result = urlHelper.buildUrl(formComponent.actionMapper.getUriFromActionMapping(mapping),
                formComponent.request, formComponent.response, queryStringResult.getQueryParams(), scheme, formComponent.includeContext, true, false, false);
            formComponent.addParameter("action", result);

            // let's try to get the actual action class and name
            // this can be used for getting the list of validators
            formComponent.addParameter("actionName", actionName);
            try {
                Class<?> clazz = formComponent.objectFactory.getClassInstance(actionConfig.getClassName());
                formComponent.addParameter("actionClass", clazz);
            } catch (ClassNotFoundException e) {
                // this is OK, we'll just move on
            }

            formComponent.addParameter("namespace", namespace);

            // if the name isn't specified, use the action name
            if (formComponent.name == null) {
                formComponent.addParameter("name", actionName);
            }

            // if the id isn't specified, use the action name
            if (formComponent.getId() == null && actionName != null) {
                String escapedId = formComponent.escape(actionName);
                formComponent.addParameter("id", escapedId);
                formComponent.addParameter("escapedId", escapedId);
            }
        } else if (action != null) {
            // Since we can't find an action alias in the configuration, we just
            // assume the action attribute supplied is the path to be used as
            // the URI this form is submitting to.

            // Warn user that the specified namespace/action combo
            // was not found in the configuration.
            if (namespace != null && LOG.isWarnEnabled()) {
                LOG.warn("No configuration found for the specified action: '{}' in namespace: '{}'. Form action defaulting to 'action' attribute's literal value.", actionName, namespace);
            }

            String result = urlHelper.buildUrl(action, formComponent.request, formComponent.response, queryStringResult.getQueryParams(), scheme, formComponent.includeContext, true);
            formComponent.addParameter("action", result);

            // namespace: cut out anything between the start and the last /
            int slash = result.lastIndexOf('/');
            if (slash != -1) {
                formComponent.addParameter("namespace", result.substring(0, slash));
            } else {
                formComponent.addParameter("namespace", "");
            }

            // name/id: cut out anything between / and . should be the id and
            // name
            String id = formComponent.getId();
            if (id == null) {
                slash = result.lastIndexOf('/');
                int dot = result.indexOf('.', slash);
                if (dot != -1) {
                    id = result.substring(slash + 1, dot);
                } else {
                    id = result.substring(slash + 1);
                }
                String escapedId = formComponent.escape(id);
                formComponent.addParameter("id", escapedId);
                formComponent.addParameter("escapedId", escapedId);
            }
        }

        // WW-1284
        // evaluate if client-side js is to be enabled. (if validation
        // interceptor does allow validation eg. method is not filtered out)
        formComponent.evaluateClientSideJsEnablement(actionName, namespace, actionMethod);
    }