restoreAttachedState and saveAttachedState


Radhesh
If you had come across a situation where you wanted to restore state of a non-primitive member variable, and found that it was not working, here is the solution:
public void restoreState(FacesContext context, Object state) {
  Object[] values = (Object[]) state;
  super.restoreState(context, values[0]);

  //Don' do this; it will fail on you!!!
  //listenerPointers = (Map<String, ArrayList<Class<? extends ActionListener>>>) values[1];

  //This will work!!!
  listenerPointers = (Map<String, ArrayList<Class<? extends ActionListener>>>) restoreAttachedState(context,values[1]);
}
Notice the call to restoreAttachedState(facesContext, value).

"saveAttachedState(facesContext, value) is the saveState() counter-part.

Both are static methods in UIComponentBase class.

0 comments:

Post a Comment

Subscribe to: Post Comments (Atom)