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https://issues.apache.org/jira/browse/MYFACES-1825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590417#action_12590417
 ] 

Bernd Bohmann commented on MYFACES-1825:
----------------------------------------

I think it should be:

Iterator it = component.getFacetsAndChildren();
if (component instanceof NamingContainer)
{
      ids = new HashSet<String>();
}
while (it.hasNext())
{
      UIComponent kid = (UIComponent) it.next();
      checkForDuplicateIds(context, kid, ids);
}

If you agree I will commit this change.

> duplicate ids not detected in JspStateManagerImpl.checkForDuplicateIds() 
> -------------------------------------------------------------------------
>
>                 Key: MYFACES-1825
>                 URL: https://issues.apache.org/jira/browse/MYFACES-1825
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 1.1.5
>            Reporter: gaston
>            Assignee: Leonardo Uribe
>             Fix For:  1.1.6-SNAPSHOT, 1.2.3-SNAPSHOT
>
>
> Some duplicate id are not detected in my MyFaces(1.1.5)/Facelets(1.1.12) 
> based application.
> I think there's a bug in MyFaces's detection of duplicate ids in 
> JspStateManagerImpl.checkForDuplicateIds() : 
> this code seems to be wrong :
>         boolean namingContainer = component instanceof NamingContainer;
>         while (it.hasNext()) {
>             UIComponent kid = (UIComponent) it.next();
>             if (namingContainer) {
>                 checkForDuplicateIds(context, kid, new HashSet());
>             }
>             else {
>                 checkForDuplicateIds(context, kid, ids);
>             }
>         }
> It should be :
>         while (it.hasNext()) {
>             UIComponent kid = (UIComponent) it.next();
>             boolean namingContainer = kid instanceof NamingContainer;
>             if (namingContainer) {
>                 checkForDuplicateIds(context, kid, new HashSet());
>             }
>             else {
>                 checkForDuplicateIds(context, kid, ids);
>             }
>         }

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