Github user jodersky commented on a diff in the pull request: https://github.com/apache/spark/pull/15257#discussion_r81207545 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/literals.scala --- @@ -60,6 +70,45 @@ object Literal { } /** + * Returns the Spark SQL DataType for a given class object. Since this type needs to be resolved + * in runtime, we use match-case idioms for class objects here. However, there are similar + * functions in other files (e.g., HiveInspectors), so these functions need to merged into one. + */ + private[this] def componentTypeToDataType(clz: Class[_]): DataType = clz match { + // primitive types + case c: Class[_] if c == jShort.TYPE => ShortType --- End diff -- Here is an example: ```scala case object container {def value: Int = 42} case object Container {def value: Int = 42} def extract(wrapper: Any) = wrapper match { case container => container.value // error: value "value" is not a member of Any case Container => Container.value // ok } ``` It's not a very good example, maybe something like http://stackoverflow.com/a/6576663/917519 will give you a better use-case
--- 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 infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org