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https://issues.apache.org/jira/browse/CALCITE-1461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15601168#comment-15601168
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Jark Wu commented on CALCITE-1461:
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Here is the PR link: https://github.com/apache/calcite/pull/318
> Hard coded class name in JaninoRelMetadataProvider breaks shading
> -----------------------------------------------------------------
>
> Key: CALCITE-1461
> URL: https://issues.apache.org/jira/browse/CALCITE-1461
> Project: Calcite
> Issue Type: Bug
> Reporter: Jark Wu
> Assignee: Julian Hyde
>
> In {{JaninoRelMetadataProvider.load3}}, the generated class string contains
> some hard coded Calcite's classes, such as
> {{org.apache.calcite.rel.metadata.MetadataDef}}. After shading Calcite, the
> MetadataDef can not be found in the shaded classes. And a compile error will
> be thrown.
> So it's better to use {{MetadataDef.class.getName()}} to replace the hard
> code string.
> I'm appreciate to make a PR if you want.
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