alamb commented on code in PR #24068:
URL: https://github.com/apache/datafusion/pull/24068#discussion_r3729763307
##########
datafusion/physical-plan/src/execution_plan.rs:
##########
@@ -165,6 +166,20 @@ pub trait ExecutionPlan: Any + Debug + DisplayAs + Send +
Sync {
check_default_invariants(self, check)
}
+ /// Returns the dynamic expressions produced by this plan node.
+ ///
+ /// A dynamic expression is produced when this node updates or completes
its
+ /// runtime state during execution. Expressions that this node only
consumes
+ /// must not be returned. This method is shallow and does not include
dynamic
+ /// expressions produced by child plans.
+ ///
+ /// Each returned expression must have a [`PhysicalExpr::expression_id`]
+ /// since all dynamic expressions such as [`DynamicFilterPhysicalExpr`]
+ /// have an expression id.
+ fn dynamic_expressions(&self) -> Vec<Arc<dyn PhysicalExpr>> {
+ Vec::new()
+ }
Review Comment:
I agree making it clear this is about what dynamic expressions the plan
produces in the name is 💯
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