Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22309#discussion_r228730753
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/ScalaReflectionSuite.scala
---
@@ -358,4 +368,20 @@ class ScalaReflectionSuite extends SparkFunSuite {
assert(numberOfCheckedArguments(deserializerFor[(java.lang.Double,
Int)]) == 1)
assert(numberOfCheckedArguments(deserializerFor[(java.lang.Integer,
java.lang.Integer)]) == 0)
}
+
+ test("schema for case class that is a value class") {
+ val schema = schemaFor[TestingValueClass.IntWrapper]
+ assert(schema === Schema(IntegerType, nullable = false))
+ }
+
+ test("schema for case class that contains value class fields") {
+ val schema = schemaFor[TestingValueClass.ValueClassData]
+ assert(schema === Schema(
+ StructType(Seq(
+ StructField("intField", IntegerType, nullable = false),
+ StructField("wrappedInt", IntegerType, nullable = false),
--- End diff --
to confirm, scala value class for primitive type can't be null?
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