public void handleNavigation()

in jee-modules/jsf-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf/impl/navigation/ViewConfigAwareNavigationHandler.java [79:166]
69 lines of code
18 McCabe index (conditional complexity)

    public void handleNavigation(FacesContext facesContext, String fromAction, String outcome)
    {
        initBeanManager();
        if(outcome != null && outcome.contains("."))
        {
            String originalOutcome = outcome;

            if(!this.otherOutcomes.contains(outcome))
            {
                //it isn't possible to support interfaces due to cdi restrictions
                if(outcome.startsWith("class "))
                {
                    outcome = outcome.substring(6);
                }
                ViewConfigDescriptor entry = this.viewConfigs.get(outcome);

                if(entry == null)
                {
                    if(DefaultErrorView.class.getName().equals(originalOutcome))
                    {
                        entry = ViewConfigCache.getDefaultErrorViewConfigDescriptor();
                    }
                }

                boolean allowCaching = true;
                if(entry == null)
                {
                    Class<?> loadedClass = tryToLoadClassForName(outcome);

                    if(loadedClass == null)
                    {
                        this.otherOutcomes.add(originalOutcome);
                    }
                    else if(ViewConfig.class.isAssignableFrom(loadedClass))
                    {
                        //a sub-classed page-config for annotating it with different view params
                        if(loadedClass.getAnnotation(Page.class) == null &&
                                loadedClass.getSuperclass().getAnnotation(Page.class) != null)
                        {
                            allowCaching = false;
                            addConfiguredViewParameters(loadedClass);

                            loadedClass = loadedClass.getSuperclass();
                        }
                        //noinspection unchecked
                        entry = ViewConfigCache.getViewConfigDescriptor((Class<? extends ViewConfig>) loadedClass);
                    }
                }

                if(entry != null)
                {
                    if(allowCaching)
                    {
                        this.viewConfigs.put(outcome, entry);
                        addConfiguredViewParameters(entry.getViewConfig()); //in case of false it has been added already
                    }

                    String oldViewId = null;

                    if (facesContext.getViewRoot() != null)
                    {
                        oldViewId = facesContext.getViewRoot().getViewId();
                    }

                    PreViewConfigNavigateEvent navigateEvent = firePreViewConfigNavigateEvent(oldViewId, entry);

                    entry = tryToUpdateEntry(entry, navigateEvent);

                    if(entry != null && !this.implicitNavigationSupported) //entry might be null after the update
                    {
                        //jsf1.2
                        processViewDefinitionEntry(facesContext, entry);

                        //just to invoke all other nav handlers if they have to perform special tasks...
                        this.navigationHandler.handleNavigation(facesContext, null, null);
                        return;
                    }
                    else if(entry != null)
                    {
                        //jsf2+
                        outcome = convertEntryToOutcome(facesContext.getExternalContext(), entry);
                    }
                }
            }
        }

        this.navigationHandler.handleNavigation(facesContext, fromAction, outcome);
    }