Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/20979#discussion_r179705283
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
---
@@ -988,8 +988,20 @@ case class CatalystToExternalMap private(
override def children: Seq[Expression] =
keyLambdaFunction :: valueLambdaFunction :: inputData :: Nil
- override def eval(input: InternalRow): Any =
- throw new UnsupportedOperationException("Only code-generated
evaluation is supported")
+ private lazy val toScalaValue: Any => Any = {
+ assert(inputData.dataType.isInstanceOf[MapType])
+ val mapType = inputData.dataType.asInstanceOf[MapType]
+ CatalystTypeConverters.createToScalaConverter(mapType)
--- End diff --
ok, I'll consider again.
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