/**
* 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;
}
@Override
public <T> T get(Contextual<T> bean, CreationalContext<T> creationalContext) {
if (creationalContext == null) {
return null;
}
checkActive();
if (passivatingScope) {
if (!(bean instanceof PassivationCapable)) {
throw new IllegalStateException(
bean.toString() + " doesn't implement " + PassivationCapable.class.getName());
}
}
ContextualStorage storage = getContextualStorage(bean, true);
Map<Object, ContextualInstanceInfo<?>> contextMap = storage.getStorage();
ContextualInstanceInfo<?> contextualInstanceInfo = contextMap.get(storage.getBeanKey(bean));
if (contextualInstanceInfo != null) {
@SuppressWarnings("unchecked")
final T instance = (T) contextualInstanceInfo.getContextualInstance();
if (instance != null) {
return instance;
}
}
return storage.createContextualInstance(bean, creationalContext);
}
/**
* Create the bean.
*
* @param <T> the type.
* @param facesContext the faces context.
* @param contextual the contextual.
* @param creational the creational.
* @return the value or null if not found.
*/
public <T> T createBean(
FacesContext facesContext, Contextual<T> contextual, CreationalContext<T> creational) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, "Creating @ViewScoped CDI bean using contextual: {0}", contextual);
}
if (!(contextual instanceof PassivationCapable)) {
throw new IllegalArgumentException(
"ViewScoped bean " + contextual.toString() + " must be PassivationCapable, but is not.");
}
T result = contextual.create(creational);
if (result != null) {
String name = getName(result);
facesContext.getViewRoot().getViewMap(true).put(name, result);
String passivationCapableId = ((PassivationCapable) contextual).getId();
getContextMap(facesContext)
.put(passivationCapableId, new ViewScopeContextObject(passivationCapableId, name));
}
return result;
}