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https://issues.apache.org/jira/browse/MYFACES-2881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12898594#action_12898594
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Werner Punz commented on MYFACES-2881:
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Not a bug, but a deficit from the spec regarding the viewstate handling, the
problem is by spec definition and by limitations regarding portlet environments
I cannot update all viewstates from all forms.
The spec says only the issuing forms viewstate can be updated, i extended that
in my code to all forms which have updated elements, because since I do not
have a portlet detection from the javascript side I cannot detect which forms
are part of the viewroot affected.
So I cannot fix it directly but I have coded a workaround in, simply either
update form2 as well or one element which is located in form 2.
> Server state saving with two forms, ajax and normal request is broken
> ---------------------------------------------------------------------
>
> Key: MYFACES-2881
> URL: https://issues.apache.org/jira/browse/MYFACES-2881
> Project: MyFaces Core
> Issue Type: Bug
> Components: General
> Affects Versions: 2.0.1, 2.0.2-SNAPSHOT
> Environment: myfaces 2.0.1 or trunk;
> Reporter: Martin Kočí
> Priority: Blocker
>
> Use simple xhtml with:
> <h:form id="form1">
> <h:commandButton value="Partial">
> <f:ajax execute="@this" render="@this" />
> </h:commandButton>
> </h:fom>
> </h:form>
> <h:form id="form2">
> <h:commandButton value="Full" />
> </h:form>
> then:
> 1) click "Partial" button 20x or more
> 2) click "Full" button
> -> ViewExpiredException appears. If you click "Partial" 19 times or less
> ViewExpiredException does not appear.
> 20 is default for NUMBER_OF_VIEW_IN_SESSION - it you set this param to 1 you
> reproduce this problem with two clicks. Maybe there is more simple test case
> for reproducing this issue but I didn't find it yet.
> This bug is present in 2.0.1 already and is related to server state saving:
> myfaces 2.0.1:
> PSS + server: failed
> PSS + client: ok
> FSS + server: failed
> FSS + client: ok
> myfaces 2.0.2-SNAPSHOT:
> PSS + server: failed
> PSS + client: ok
> FSS + server: failed
> FSS + client: ok
> Very likely this causes MYFACES-2877 too.
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