From what I understand, when a JSF action returns ""
(empty String) the user stays on the current page but the view is refreshed. However, when the action returns null
the user still stays on the current page but the old view is reused. My question is:
- Is the above statement correct (accurate)?
- If yes, then what are the implications of this? Specifically, what effect does using one versus the other have on data on the page (values in JSF UI components, or data stored in a request-scope bean in a DataTable, for example)?
- In what situations should one be used over the other?