Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22063#discussion_r214560630
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -40,7 +41,7 @@ import org.apache.spark.sql.types.DataType
case class UserDefinedFunction protected[sql] (
f: AnyRef,
dataType: DataType,
- inputTypes: Option[Seq[DataType]]) {
+ inputTypes: Option[Seq[ScalaReflection.Schema]]) {
--- End diff --
ah i see, it's a case class, so we would need to keep the `def
inputTypes(): Option[Seq[DataType]]`
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