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https://issues.apache.org/jira/browse/TRINIDAD-1733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836023#action_12836023
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Andrew Robinson commented on TRINIDAD-1733:
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I also proposed this to Mojarra as an enhancement:
https://javaserverfaces.dev.java.net/issues/show_bug.cgi?id=1559
> Throw an error if component binding is used illegally
> -----------------------------------------------------
>
> Key: TRINIDAD-1733
> URL: https://issues.apache.org/jira/browse/TRINIDAD-1733
> Project: MyFaces Trinidad
> Issue Type: New Feature
> Components: Components
> Affects Versions: 1.2.13-core
> Reporter: Andrew Robinson
> Assignee: Andrew Robinson
>
> Because users often illegally use component binding with non-request scopes,
> it would be very good to have a way to stop users from doing so with Trinidad
> components.
> <tr:outputText binding="#{requestScope.myBean.outputComponent}" />
> vs.
> <tr:outputText binding="#{sessionScope.myBean.outputComponent}" />
> I suggest we put code into UIXComponentBase that when the parent
> component is set on a component, we check the old view root and the new view
> root and if they are not the same, throw an exception. This way we would
> catch these design errors before they are filed as bugs in the components.
> I have seen many people trying to flag these situations as bugs in the
> framework instead of realizing it is a problem with their application.
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