Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5279#discussion_r27488201
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
---
@@ -75,6 +75,90 @@ trait ScalaReflection {
case (other, _) => other
}
+ /**
+ * Creates a converter function that will convert Scala objects to the
specified catalyst type.
+ */
+ private[sql] def createCatalystConverter(dataType: DataType): (Any) =>
Any = {
+ def extractOption(item: Any) = item match {
+ case o: Some[_] => o.get
+ case other => other
+ }
+
+ dataType match {
+ // Check UDT first since UDTs can override other types
+ case udt: UserDefinedType[_] => (item) => {
+ if (item == None) null else udt.serialize(extractOption(item))
+ }
+
+ case arrayType: ArrayType => {
+ val elementConverter =
createCatalystConverter(arrayType.elementType)
+ (item: Any) => {
+ if (item == None) {
+ null
+ } else {
+ extractOption(item) match {
+ case a: Array[_] => a.toSeq.map(elementConverter)
+ case s: Seq[_] => s.map(elementConverter)
+ }
+ }
+ }
+ }
+
+ case mapType: MapType => {
+ val keyConverter = createCatalystConverter(mapType.keyType)
+ val valueConverter = createCatalystConverter(mapType.valueType)
+ (item: Any) => {
+ if (item == None) {
+ null
+ } else {
+ extractOption(item) match {
+ case m: Map[_, _] => m.map{ case (k, v) =>
--- End diff --
Space before `{`.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
