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http://issues.apache.org/jira/browse/MYFACES-857?page=comments#action_12361169 
] 

Martin Marinschek commented on MYFACES-857:
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Jürgen, as far as I can see, you were absolutely right.

That would mean that in MyFaces you couldn't create dynamic components on the 
second postback. Pretty Heavy bug!

Thanks for evaluating this - I just committed the fix.

regards,

Martin

> Duplicate id in subview
> -----------------------
>
>          Key: MYFACES-857
>          URL: http://issues.apache.org/jira/browse/MYFACES-857
>      Project: MyFaces
>         Type: Bug
>   Components: Implementation
>     Versions: 1.1.1
>  Environment: Windows XP, Browser IE, Mozilla, Tomcat 5.0.28
>     Reporter: Juergen Melzer
>     Assignee: Martin Marinschek
>  Attachments: MYFACES-857.patch
>
> We use tiles and the myfaces integration. 
> But we get an exception:
> javax.faces.FacesException: cannot add component with id '_id13' and path : 
> {Component-Path : [Class: javax.faces.component.html.HtmlPanelGrid,Id: 
> _id13]} to its parent component. This might be a problem due to duplicate ids.
> at javax.faces.webapp.UIComponentTag.findComponent(UIComponentTag.java:401)
> at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:219)
> I think the problem is that the id is generated after the 
> JspStateManagerImp.restoreTreeStructure is called. But inside the view there 
> is still the id above.
> A possible solution is to restore the field _uniqueIdCounter of the class 
> UIViewRoot to make correct counting...

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