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https://issues.apache.org/jira/browse/MYFACES-2475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797672#action_12797672
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Michael Kurz commented on MYFACES-2475:
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There is one problem with this approach. It seems that the facets of all
children should be visited whereas only child components that are columns
should be visited. I do not know why this is specified this way (does this make
any sense?).
> Visit facets in UIComponent.visitTree()
> ---------------------------------------
>
> Key: MYFACES-2475
> URL: https://issues.apache.org/jira/browse/MYFACES-2475
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Affects Versions: 2.0.0-alpha
> Reporter: Michael Kurz
> Attachments: MYFACES-2475.patch
>
>
> I am currently trying to get f:ajax running inside a composite component. So
> I would say it is necessary to include the facets (use
> getFacetsAndChildren() instead of getChildren()) in UIComponent.visitTree().
> The problem with this solution is, that there is a potential conflict with
> UIData.visitTree() (also see MYFACES-2137). The result is that facets of
> columns are visited twice. I noticed this because UIDataTest.testVisitTree()
> fails unless the line expecting the column facet is in the code twice.
> I tried the same example with Mojarra anwith the same result: the column
> facet is visited twice.
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