Leonardo Uribe created MYFACES-3721:
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Summary: Override of uniqueIdCounter for UIViewRoot in restoreView
cause component duplicate id exception
Key: MYFACES-3721
URL: https://issues.apache.org/jira/browse/MYFACES-3721
Project: MyFaces Core
Issue Type: Bug
Components: JSR-314
Reporter: Leonardo Uribe
Assignee: Leonardo Uribe
I have found an issue with the solution applied in MYFACES-3663. The steps to
cause the problem are the following:
1. The view is rendered and some unique ids are generated. UIViewRoot has state
and it is saved.
2. The view needs to be restored, PSS algorithm takes the uniqueIdCounter from
the state and set it to UIViewRoot, then the initial state is constructed using
facelets algorithm
3. Inside facelets algorithm, a new component is created and that increase
uniqueIdCounter (f:ajax tag handler adds default jsf.js and ask for a unique id
from UIViewRoot).
4. The delta state is applied, overriding uniqueIdCounter.
5. A new component is created in render response phase, creating the duplicate
id condition.
6. The state saving algorithm detects the duplicate id and throw duplicate id
exception.
The conditions required to reproduce the problem are very unlikely, so other
tests done were not able to reproduce the problem.
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