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https://issues.apache.org/jira/browse/MYFACES-2137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12832871#action_12832871
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Michael Kurz commented on MYFACES-2137:
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With the current algorithm facets of column child components are visited twice
in UIData.visitTree(). The first time by the explicit calls to visitTree() on
the facets themselves and the second time by calling visitTree() on the child
column components.
This seems to be a spec issue and behaves the same way in Mojarra. So I filed
an issue against them some time ago which is at least confirmed now:
https://javaserverfaces.dev.java.net/issues/show_bug.cgi?id=1483
Let's see what comes...
> JSF 2.0 Component Tree Visiting
> -------------------------------
>
> Key: MYFACES-2137
> URL: https://issues.apache.org/jira/browse/MYFACES-2137
> Project: MyFaces Core
> Issue Type: New Feature
> Components: JSR-314
> Affects Versions: 2.0.0-alpha
> Reporter: Matthias Weßendorf
> Attachments: uidata_visit_tree.patch, uidata_visit_tree_new.patch
>
>
> The Tree Visiting, part of jsf2.0, was already added to Trinidad 1.2.x to
> improve things.
> We just need to add the api/impl from that patch, to this project.
> see TRINIDAD-1368 for more.
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