Hello,
I know that at the first visit of a view, the number of children of the UIViewRoot is unknown until the render view phase.
But I'd like to know this number.
Is there a meaning of doing this ?
How is the UIViewRoot tree is built ?
Thanks in advance.
__ _ _ _
bgOnline
> I know that at the first visit of a view, the number
> of children of the UIViewRoot is unknown until the
> render view phase.
Yes.
> But I'd like to know this number.
> Is there a meaning of doing this ?
You can't unless you invent another way to built the tree.
> How is the UIViewRoot tree is built ?
The handler of each JSF tag firstly tries to find the corresponding component
in the view. When it fails to find, it creates a new component.
In a typical case, the handler of f:view can find the corresponding
component; i.e. the view root, whereas the handlers of other tags(h:form,
h:inputText, h:dataTable, and so on) fail and create the components.
See the javadoc of UIComponentTag.doStartTag() and findComponent().
