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https://issues.apache.org/jira/browse/ARROW-11710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-11710:
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Labels: pull-request-available (was: )
> [Rust][DataFusion] Implement ExprRewriter to avoid tree traversal redundancy
> ----------------------------------------------------------------------------
>
> Key: ARROW-11710
> URL: https://issues.apache.org/jira/browse/ARROW-11710
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: Rust - DataFusion
> Reporter: Andrew Lamb
> Assignee: Andrew Lamb
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The idea is to
> 1. Reduce the amount repetitions in optimizer rules to make them easier to
> implement
> 2. Reduce the amount of repetition to make it easier to see the actual logic
> (rather than having it intertwined with the code needed to do recursion)
> 2. Set the stage for a more general `PlanRewriter` that doesn't have to
> clone its input, and can modify take their input by value and consume them
> Plan is to make an ExprRewriter, the mutable counterpart to
> `ExpressionVisitor` and demonstrates its usefulness by rewriting several
> expression transformation rewrite passes using it.
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