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https://issues.apache.org/jira/browse/TRINIDAD-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12985875#action_12985875
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Andy Schwartz commented on TRINIDAD-2019:
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We ran into another case where Mojarra was incorrectly inserting a UIPanel
wrapper inside of a facet. See:
http://java.net/jira/browse/JAVASERVERFACES-1726
Is it possible that you are running against a version of Mojarra that does not
include this fix (ie. pre-2.0.4)?
Since the incorrect insertion of UIPanel components can have all sorts of
unexpected side effects, I would recommend that we attempt to secure a fix for
this problem at the Mojarra level rather than working around this in Trinidad.
> ClassCastException on StampState$TableState when using Mojarra
> --------------------------------------------------------------
>
> Key: TRINIDAD-2019
> URL: https://issues.apache.org/jira/browse/TRINIDAD-2019
> Project: MyFaces Trinidad
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha, 2.0.0-alpha-2
> Reporter: Scott O'Bryan
> Assignee: Scott O'Bryan
> Attachments: TRINIDAD-2019.patch
>
>
> When a UIX Collection object is put inside of a component (such as a
> switcher which has a list of facets) and it then put inside of another panel
> collection, Mojarra can sometimes change the heirarcy of the stamped
> component by inserting a UIPanel during a PPR. This has the effect of
> generating a ClassCastException when StampState$TableState tries to cast the
> component to a UIXCollection so that table-in-table can be supported.
> This issue ONLY happens in this specific circumstance where the switcher has
> only one component in the facet and we have a collection inside of another
> collection. Although this is a bug with Mojarra, the patch is fairly
> straight forward and if we see a UIPanel instead of a UIXCollection, we
> should, instead, sent the StampState to the UIPanel's single child.
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