protected void initFrom()

in ti/phase2/jars/core/src/java/org/apache/ti/pageflow/xwork/PageFlowResult.java [312:394]
61 lines of code
18 McCabe index (conditional complexity)

    protected void initFrom(Forward fwd, PageFlowActionContext actionContext, boolean checkForErrors) {
        // If there was a path specified on the Forward (programmatically), use that.
        // TODO: enforce an annotation attribute that allows this; otherwise, throw.
        if (fwd.getPath() != null) {
            setLocation(fwd.getPath());
        }

        // Add query params to the path.
        if (fwd.getQueryString() != null) {
            setLocation(getLocation() + fwd.getQueryString());
        }

        Class returnFormClass = null;

        if (_outputFormBeanType != null) {
            try {
                returnFormClass = Class.forName(_outputFormBeanType);
            } catch (ClassNotFoundException e) {
                // This should never happen -- the JPF compiler ensures that it's a valid class.
                assert false : e;
            }
        }

        FlowController flowController = actionContext.getFlowController();

        if (_outputFormBeanMember != null) {
            try {
                assert flowController != null; // should be set in initialize()

                Field field = flowController.getClass().getDeclaredField(_outputFormBeanMember);
                returnFormClass = field.getType();

                if (!Modifier.isPublic(field.getModifiers())) {
                    field.setAccessible(true);
                }

                Object form = field.get(flowController);

                if (form != null) {
                    if (_log.isDebugEnabled()) {
                        _log.debug("using member " + _outputFormBeanMember + " for forward " + getName());
                    }

                    fwd.addOutputForm(form);
                } else {
                    if (_log.isInfoEnabled()) {
                        _log.info("returnFormMember " + _outputFormBeanMember + " was null.");
                    }
                }
            } catch (NoSuchFieldException e) {
                assert false : "could not find field " + _outputFormBeanMember; // compiler should catch this
            } catch (IllegalAccessException e) {
                assert false; // should not get here -- field is accessible.
            }
        }

        if (checkForErrors) {
            checkOutputFormBeans(fwd, returnFormClass, flowController);
            checkActionOutputs(fwd, actionContext);

            //
            // Throw an exception if this is a redirect, and if there was an output form or an action output added.
            // Output forms and action outputs are carried in the request, and will be lost on redirects.
            //
            if (isRedirect()) {
                if ((_actionOutputDeclarations != null) && !_actionOutputDeclarations.isEmpty()) {
                    FlowControllerException ex = new IllegalActionOutputException(_name, flowController,
                                                                                  (String) _actionOutputDeclarations.keySet()
                                                                                                                    .iterator()
                                                                                                                    .next());
                    InternalUtils.throwPageFlowException(ex);
                }

                List outputForms = fwd.getOutputFormBeans();

                if ((outputForms != null) && !outputForms.isEmpty()) {
                    FlowControllerException ex = new IllegalRedirectOutputFormException(_name, flowController,
                                                                                        outputForms.get(0).getClass().getName());
                    InternalUtils.throwPageFlowException(ex);
                }
            }
        }
    }