soumyakanti3578 commented on a change in pull request #1959:
URL: https://github.com/apache/hive/pull/1959#discussion_r572918961
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/ChildExpsRexShuttle.java
##########
@@ -0,0 +1,113 @@
+package org.apache.hadoop.hive.ql.optimizer.calcite;
+
+import org.apache.calcite.rex.*;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class ChildExpsRexShuttle extends RexShuttle {
+ private final List<RexNode> exps;
+
+ public ChildExpsRexShuttle(List<RexNode> exps) {
+ this.exps = exps;
+ }
+
+ @Override
+ public RexNode visitOver(RexOver over) {
+ exps.add(over);
+ return super.visitOver(over);
Review comment:
In that case, should we just return the appropriate method arguments
here or just return `null` as we are not calling these methods explicitly
anywhere?
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