/**
* We get PreDestroyViewMapEvent events from the JSF servlet and destroy our contextual instances.
* This should (theoretically!) also get fired if the webapp closes, so there should be no need to
* manually track all view scopes and destroy them at a shutdown.
*
* @see javax.faces.event.SystemEventListener#processEvent(javax.faces.event.SystemEvent)
*/
@Override
public void processEvent(final SystemEvent event) {
if (event instanceof PreDestroyViewMapEvent) {
Map<Contextual<?>, Object> componentInstanceMap = getComponentInstanceMap();
Map<Contextual<?>, CreationalContext<?>> creationalContextMap = getCreationalInstanceMap();
if (componentInstanceMap != null) {
for (Map.Entry<Contextual<?>, Object> componentEntry : componentInstanceMap.entrySet()) {
/*
* No way to inform the compiler of type <T> information, so
* it has to be abandoned here :(
*/
Contextual contextual = componentEntry.getKey();
Object instance = componentEntry.getValue();
CreationalContext creational = creationalContextMap.get(contextual);
contextual.destroy(instance, creational);
}
}
}
}
/**
* Destroy the view scoped beans for the given view and context map.
*
* @param viewMap the view map.
* @param contextMap the context map.
*/
private void destroyBeans(
Map<String, Object> viewMap, Map<String, ViewScopeContextObject> contextMap) {
ArrayList<String> removalNameList = new ArrayList<String>();
if (contextMap != null) {
for (Map.Entry<String, ViewScopeContextObject> entry : contextMap.entrySet()) {
String passivationCapableId = entry.getKey();
Contextual contextual = beanManager.getPassivationCapableBean(passivationCapableId);
ViewScopeContextObject contextObject = entry.getValue();
CreationalContext creationalContext = beanManager.createCreationalContext(contextual);
// We can no longer get this from the contextObject. Instead we must call
// beanManager.createCreationalContext(contextual)
contextual.destroy(viewMap.get(contextObject.getName()), creationalContext);
removalNameList.add(contextObject.getName());
}
Iterator<String> removalNames = removalNameList.iterator();
while (removalNames.hasNext()) {
String name = removalNames.next();
viewMap.remove(name);
}
}
}
public static void destroyBean(
Contextual bean, ContextualInstanceInfo<?> contextualInstanceInfo) {
bean.destroy(
contextualInstanceInfo.getContextualInstance(),
contextualInstanceInfo.getCreationalContext());
}