[GitHub] [spark] wangyum commented on a diff in pull request #36080: [SPARK-38797][SQL] Runtime Filter supports pruning side has window

[GitBox <gi...@apache.org>]

wangyum commented on code in PR #36080:
URL: https://github.com/apache/spark/pull/36080#discussion_r843428746


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/InjectRuntimeFilter.scala:
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@@ -132,28 +131,21 @@ object InjectRuntimeFilter extends Rule[LogicalPlan] with PredicateHelper with J
       REGEXP_EXTRACT_FAMILY, REGEXP_REPLACE)
   }
 
-  private def canFilterLeft(joinType: JoinType): Boolean = joinType match {
-    case Inner | RightOuter => true
-    case _ => false
-  }
-
-  private def canFilterRight(joinType: JoinType): Boolean = joinType match {
-    case Inner | LeftOuter => true
-    case _ => false
-  }

Review Comment:
   Move these functions to `JoinSelectionHelper` to make the code easier to maintain.



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