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https://issues.apache.org/jira/browse/MYFACES-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904143#comment-15904143
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Leonardo Uribe commented on MYFACES-4101:
-----------------------------------------
After thinking about this problem and tried some possible solutions, including
the one found in Omnifaces (code is ASL 2.0 licensed, so it is compatible with
our codebase), I found the solution using a custom ELResolver and a transient
map to view scope is the best one.
There was a possible alternative using a custom VariableMapper, but that
solution does not work well when EL expressions are created from beans, so it
will not work well with the new @ManagedProperty for example. The idea is
constants imported with f:importConstants has view scope, so UIImportConstants
should be added inside f:metadata, so in that sense it should work as view
scope. Please note there is no alternative way to add constants in
faces-config.xml or through annotations.
> Implement f:importConstants
> ---------------------------
>
> Key: MYFACES-4101
> URL: https://issues.apache.org/jira/browse/MYFACES-4101
> Project: MyFaces Core
> Issue Type: New Feature
> Components: JSR-372
> Reporter: Leonardo Uribe
> Assignee: Leonardo Uribe
> Fix For: 2.3.0
>
>
> Implement f:importConstants (See UIImportConstants for details)
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