Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22309#discussion_r228925856
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
---
@@ -128,6 +128,15 @@ object ScalaReflection extends ScalaReflection {
case _ => false
}
+ def isValueClass(tpe: `Type`): Boolean = {
+ tpe.typeSymbol.asClass.isDerivedValueClass
+ }
+
+ /** Returns the name and type of the underlying parameter of value class
`tpe`. */
+ def getUnderlyingParameterOf(tpe: `Type`): (String, Type) = {
+ getConstructorParameters(tpe).head
--- End diff --
is there a more official way to get the value class field name?
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