Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7203#discussion_r33842250
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/ScalaUDF.scala
---
@@ -24,13 +24,18 @@ import org.apache.spark.sql.types.DataType
* User-defined function.
* @param dataType Return type of function.
*/
-case class ScalaUDF(function: AnyRef, dataType: DataType, children:
Seq[Expression])
- extends Expression {
+case class ScalaUDF(
+ function: AnyRef,
+ dataType: DataType,
+ children: Seq[Expression],
+ expectedInputTypes: Seq[DataType] = Nil) extends Expression with
ExpectsInputTypes {
--- End diff --
you can just call this inputTypes and remove the inputTypes function I think
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