/**
* Get the value from the view map (or null if not found).
*
* @param <T> the type.
* @param facesContext the faces context.
* @param contextual the contextual.
* @return the value or null if not found.
*/
public <T> T getBean(FacesContext facesContext, Contextual<T> contextual) {
T result = null;
Map<String, ViewScopeContextObject> contextMap = getContextMap(facesContext);
if (contextMap != null) {
if (!(contextual instanceof PassivationCapable)) {
throw new IllegalArgumentException(
"ViewScoped bean "
+ contextual.toString()
+ " must be PassivationCapable, but is not.");
}
ViewScopeContextObject contextObject =
contextMap.get(((PassivationCapable) contextual).getId());
if (contextObject != null) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(
Level.FINEST,
"Getting value for @ViewScoped bean with name: {0}",
contextObject.getName());
}
result = (T) facesContext.getViewRoot().getViewMap(true).get(contextObject.getName());
}
}
return result;
}
/**
* 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);
}
}
}
