cloud-fan commented on code in PR #44367:
URL: https://github.com/apache/spark/pull/44367#discussion_r1432463558
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/rules/Rule.scala:
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@@ -33,4 +33,31 @@ abstract class Rule[TreeType <: TreeNode[_]] extends
SQLConfHelper with Logging
}
def apply(plan: TreeType): TreeType
+
+ def apply(plan: TreeType, ruleContext: Option[RuleContextBase]): TreeType =
apply(plan)
+}
+
+trait RuleContextBase {
+ def isSubquery: Boolean
+
+ private[sql] def withSubquery(isSubquery: Boolean): RuleContextBase
Review Comment:
shall we make it public as well? Third-party rules may need to process
subqueries and propagate rule context as well .
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