volosied commented on PR #607:
URL: https://github.com/apache/myfaces/pull/607#issuecomment-1767128386
Tried to create a simple scenario, but so far so luck. This DupId Exception
is also difficult to replicate easily.
Requirements for this bug to occur are
- Composite Component
- c:forEach
- p:calendar
I'm not familiar with p:calendar but my suspicion is that the tree under it
is creating elements which aren't marked. Thus during the restore phase, the
children are simply added. Specifically, it relates to the component resources
created by p:calendar. (target is ComponentResourceContainer and the child is
jakarta.faces.component.UIOutput. )
This getChildList.add causes the duplicate id exception since restored
child elements match an id of an existing element. I believe the faulty
element is `inputmask/inputmask.js.xhtml?ln=primefaces&v=13.0.0"`?
See error from the original test app:
```
org.apache.myfaces.view.facelets.compiler.DuplicateIdException: Component
with duplicate id "j_id__rd_5" found. The first component is {Component-Path :
[Class: jakarta.faces.component.UIViewRoot,ViewId: /test.xhtml][Class:
org.apache.myfaces.component.ComponentResourceContainer,Id:
jakarta_faces_location_head][Class: jakarta.faces.component.UIOutput,Id:
j_id__rd_5]}
```
I'll take another look later.
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