Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19813#discussion_r156055243
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -55,8 +55,42 @@ import org.apache.spark.util.{ParentClassLoader, Utils}
* to null.
* @param value A term for a (possibly primitive) value of the result of
the evaluation. Not
* valid if `isNull` is set to `true`.
+ * @param inputRow A term that holds the input row name when generating
this code.
+ * @param inputVars A list of [[ExprInputVar]] that holds input variables
when generating this code.
*/
-case class ExprCode(var code: String, var isNull: String, var value:
String)
+case class ExprCode(
+ var code: String,
+ var isNull: String,
+ var value: String,
+ var inputRow: String = null,
+ var inputVars: Seq[ExprInputVar] = Seq.empty) {
--- End diff --
do we have a requirement that only one of them can be not null/Nil?
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