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Date: Tue, 7 Sep 2010 13:33:35 -0400 (EDT)
From: "Leonardo Uribe (JIRA)" <dev@myfaces.apache.org>
To: dev@myfaces.apache.org
Subject: [jira] Resolved: (MYFACES-2908) UIViewRoot.addComponentResource()
 adding multiple components with same ID instead of replacing
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     [ https://issues.apache.org/jira/browse/MYFACES-2908?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leonardo Uribe resolved MYFACES-2908.
-------------------------------------

    Resolution: Fixed

> UIViewRoot.addComponentResource() adding multiple components with same ID instead of replacing
> ----------------------------------------------------------------------------------------------
>
>                 Key: MYFACES-2908
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2908
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: JSR-314
>    Affects Versions: 2.0.2-SNAPSHOT
>            Reporter: Michael Concini
>            Assignee: Michael Concini
>             Fix For: 2.0.2-SNAPSHOT
>
>         Attachments: MYFACES-2908-patch.txt
>
>
> Looks like when MYFACES-2854 was committed, there were two issues it caused where we break spec compliance.  Both are around behavior that "If the component ID of componentResource matches the the ID of a resource that has allready been added, remove the old resource."
> The first is that it looks like the "else if (componentId != null)" statement is in the wrong place.  
> If a UIComponent is added with the same ID as an existing component, we'll never get to this check since we'll  be false on the isInView() check.  
> This will cause duplicate ID exceptions to be thrown if multiple objects with the same ID are added.  
> This is easily resolved by moving the else if to kick in whenever isInView() is false.
> The second issue, and the more important since this is breaking a TCK test, is that since we were only comparing to the parent's ID to the location prefix, we weren't handling the case where the same object gets added a second time after updating the target.  
> This can be resolved by changing 
>             if (componentResource.getParent() != null &&
>                 componentResource.getParent().getId() != null &&
>                 componentResource.getParent().getId().startsWith(JAVAX_FACES_LOCATION_PREFIX)) ...
> to
>             if (componentResource.getParent() != null &&
>                 componentResource.getParent().getId() != null &&
>                 componentResource.getParent().getId().equals(JAVAX_FACES_LOCATION_PREFIX + target))
> I'll attach a patch for review while I wait for our CTS team to try the change out.  I probably wont' be able to commit until after the US Labor Day holiday since I'm away Friday. 

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