LiaCastaneda opened a new issue, #20899: URL: https://github.com/apache/datafusion/issues/20899
### Is your feature request related to a problem or challenge? `ExecutionPlan::apply_expressions` (#20337) added a read-only visitor API for physical expressions. To complete the API that mirrors `LogicalPlan::map_expressions `— we should also implement a write counterpart that allows transforming expressions and reconstructing the node. Use cases: - Part of https://github.com/apache/datafusion/issues/14342 - Any transformation that needs to replace expressions across a plan tree ### Describe the solution you'd like Proposed API: ``` fn map_expressions<F>( self: Arc<Self>, f: &mut F, ) -> Result<Transformed<Arc<dyn ExecutionPlan>>> where F: FnMut(Arc<dyn PhysicalExpr>) -> Result<Transformed<Arc<dyn PhysicalExpr>>>; ``` Each ExecutionPlan implementor is responsible for transforming its expressions and reconstructing itself using direct struct construction, so that the PlanProperties (schema, ordering, partitioning) are reused without recomputation -- matching the behavior of `LogicalPlan::map_expressions`. ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
