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http://issues.apache.org/jira/browse/MYFACES-1018?page=comments#action_12362349 
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Dustin Bruzenak commented on MYFACES-1018:
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No problem. This is a solution to an issue we had internally that I figured I'd 
post for group discussion. 

I agree that this is a application implementation concern as opposed to 
something that should be included in the 'core' JSF implementation. I think 
that if the phase ordering issues get resolved putting something like this in a 
PhaseListener makes sense from the perspective that the JSF messaging is a JSF 
specific task and so should have a JSF specific solution. Where to put it, on 
the other hand, is purely a packaging concerned and I'm not familiar enough 
with the project to make that choice/suggestion.

> PhaseListener That Persists Messages After Redirects
> ----------------------------------------------------
>
>          Key: MYFACES-1018
>          URL: http://issues.apache.org/jira/browse/MYFACES-1018
>      Project: MyFaces
>         Type: New Feature
>   Components: General
>     Reporter: Dustin Bruzenak
>  Attachments: JsfMessagePhaseListener.txt
>
> Currently when JSFMessages are added to the FacesContext those messages are 
> lost  when a redirect is issued. This is a problem for a handler that does 
> some validation that adds messages and then returns a navigation case that 
> has a redirect.
> A PhaseListener can be written that will persist the current JSFMessages in 
> the user's session and then reloads them into the FacesContext on the next 
> request. Since the application will almost never want to add messages to the 
> context and have them immediately be lost, the presence of this listener 
> would help ensure that the message manager matches the expected result.

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