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https://issues.apache.org/jira/browse/MYFACES-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17422781#comment-17422781
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Thomas Andraschko commented on MYFACES-4416:
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Please check ui:repeat Implementation, it does the same
> UIComponent: stateHelper enhancement for different instances of component
> -------------------------------------------------------------------------
>
> Key: MYFACES-4416
> URL: https://issues.apache.org/jira/browse/MYFACES-4416
> Project: MyFaces Core
> Issue Type: Improvement
> Components: General
> Reporter: Philipp
> Priority: Major
>
> since it is possible to update components with ajax you can have different
> instances of a component, e.g.:
> 2 Datatables (Master/Detail) and if you select a diffrent master, the same
> detail Datatable is rendered, but with completly different data, so it would
> make sense if we set the masterID as id of the detail datatable and the
> statehelper is resolved against this id, it would have a different
> stateHelper for each master record
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