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https://issues.apache.org/jira/browse/CALCITE-2087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16289703#comment-16289703
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Julian Hyde commented on CALCITE-2087:
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It doesn't seem very elegant.
Did you consider implementing your own ViewExpander, containing the necessary
state?
> Add new method to ViewExpander interface to allow passing SchemaPlus
> --------------------------------------------------------------------
>
> Key: CALCITE-2087
> URL: https://issues.apache.org/jira/browse/CALCITE-2087
> Project: Calcite
> Issue Type: Improvement
> Reporter: Volodymyr Vysotskyi
> Assignee: Julian Hyde
>
> Currently, {{ViewExpander}} interface contains single method
> {{expandView(RelDataType rowType, String queryString, List<String>
> schemaPath, List<String> viewPath)}} which allows creating a {{RelNode}}
> instance that corresponds to the desired view.
> Drill supports impersonation for views and it is implemented in such a way,
> that its configs such as username, etc are stored in {{SchemaPlus}} instance.
> So currently it is not possible to pass these configs into this method to
> create {{CatalogReader}} and allow impersonation work.
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