Github user mike0sv commented on a diff in the pull request:
https://github.com/apache/spark/pull/18488#discussion_r134480556
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
---
@@ -154,13 +154,13 @@ case class StaticInvoke(
val evaluate = if (returnNullable) {
if (ctx.defaultValue(dataType) == "null") {
s"""
- ${ev.value} = $callFunc;
+ ${ev.value} = (($javaType) ($callFunc));
--- End diff --
explicitly cast value to needed type, because without this generated code
didn't compile with something like "cannot assign value of type Enum to
%RealEnumClassName%
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