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https://issues.apache.org/jira/browse/MYFACES-4099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877057#comment-15877057
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Leonardo Uribe commented on MYFACES-4099:
-----------------------------------------
Attached potential patch for this issue. I need to study it and create some
junit tests, to see if it works as expected or not. This is a sensible change,
so we need to do proper tests check multiple possible situations.
> Allow resolve #{cc} inside templates called from a composite component
> ----------------------------------------------------------------------
>
> Key: MYFACES-4099
> URL: https://issues.apache.org/jira/browse/MYFACES-4099
> Project: MyFaces Core
> Issue Type: Improvement
> Affects Versions: 2.2.12
> Reporter: Thomas Andraschko
> Assignee: Leonardo Uribe
> Attachments: TagAttributeImpl.java.patch
>
>
> It has been reported this scenario:
> {code:xml}
> <cc:implementation>
> <ui:include src="#{cc.page}"/>
> </cc:implementation>
> {code}
> In the included page:
> {code:xml}
> <ui:composition ...>
> <test:anoterCompositeComponent locale="#{cc.someProperty}"/>
> </ui:composition>
> {code}
> The problem right now is such kind of indirection has not been taken into
> account for #{cc} EL resolution algorithm. It is supposed that any resolution
> of #{cc} happens inside the composite component .xhtml and not indirectly
> through a template like is happening in the previous example.
> This code leads to an StackOverflowException, because the algorithm cannot
> find the right composite component and by default it takes the closest one.
> In MyFaces it is possible to pass the values as parameters of ui:include, but
> the point is it is better if we allow these example to work.
> Please note this is not a bug. This looks like an improvement. The challenge
> here is expressions using #{cc} outside a composite component xhtml are not
> cacheable, so we need to study if this improvement can be done or not.
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