Empty array in composite type is wrongly treated as NULL if field's type is Option[List[A]]

[danishin]

Empty array in composite type is wrongly treated as NULL if field's type is Option[List[A]]

For example,

case class FooComposite(optional_list1: Option[List[Int]]) extends Struct

FooComposite(None) // correctly returned as `()`
FooComposite(Some(List.empty)) // incorrectly returned as `()`
FooComposite(Some(List(1))) // correctly returned as `({})`

If I change type to List[A] then it works fine (return FooComposite(Some(List.empty)) as ({})).

[tminglei]

@danishin I checked it with latest codes. It seems ok.
Maybe it was fixed by #488

[danishin]

@tminglei That's great news. Thanks for the follow up!
Always appreciate your time and efforts to maintain this repo. It's been helping our company lots!