How is the UIViewRoot tree is built ? And when ?

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().

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