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http://issues.apache.org/jira/browse/MYFACES-539?page=comments#action_12322964 
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Mike Kienenberger commented on MYFACES-539:
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You'll either see the same behavor, or the behavior could change at some future 
point where you'll see the same behavior.

There was a recent thread talking about this.

You can read it here.

http://mail-archives.apache.org/mod_mbox/myfaces-users/200506.mbox/[EMAIL 
PROTECTED]


> h:datatable correctly calls my backing bean's method once on first request, 
> but calls the method twice on subsequent requests (i.e. refresh)
> --------------------------------------------------------------------------------------------------------------------------------------------
>
>          Key: MYFACES-539
>          URL: http://issues.apache.org/jira/browse/MYFACES-539
>      Project: MyFaces
>         Type: Bug
>   Components: General
>     Versions: 1.0.9m9
>     Reporter: Joseph Yi
>  Attachments: myfaces-test.war
>
> I'm new to JSF so I apologize in advance if this is not a bug and just a 
> misunderstanding on my part on how JSF is supposed to work.
> I have an issue where  I have a JSP with h:datatable which gets a List of 
> objects from a backing bean. On a user's first request, the backing bean's 
> method to retrieve the list is only called once. However, subsequent requests 
> causes double execution of the method.

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