Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5279#discussion_r27488195
--- 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 => {
--- End diff --
Generally, please don't add braces in a `case` class, namely, prefer
```scala
foo match {
case ... =>
expr1
expr2
}
```
over
```scala
foo match {
case ... => {
expr1
expr2
}
}
```
This rule applies to the whole PR.
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