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https://issues.apache.org/jira/browse/ARROW-9839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove reassigned ARROW-9839:
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Assignee: Andy Grove
> [Rust] [DataFusion] Add ability to downcast ExecutionPlan to specific operator
> ------------------------------------------------------------------------------
>
> Key: ARROW-9839
> URL: https://issues.apache.org/jira/browse/ARROW-9839
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust, Rust - DataFusion
> Reporter: Andy Grove
> Assignee: Andy Grove
> Priority: Major
> Fix For: 2.0.0
>
>
> Sometimes it is necessary to have operator-specific logic in a query
> optimizer, so we need the ability to get an Any reference to an ExecutionPlan
> so we can downcast it.
> We do something very similar in PrimitiveArray already with an as_any method
> but the difference there is we can call get_type first to know exactly what
> type to cast to and we don't have anything like that in ExecutionPlan, but we
> could at least speculatively try casting to specific operators.
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