Please register SimpleDataFrame for polymorphic serialization in the future if possible.

[arybach]

Exception in thread "main" kotlinx.serialization.SerializationException: Class 'SimpleDataFrame' is not registered for polymorphic serialization in the scope of 'DataFrame'.
Mark the base class as 'sealed' or register the serializer explicitly.

Thank you very much.

[holgerbrandl]

What about GroupedDataFrame? Wouldn't we then rather need to mark the upstream interface DataFrame itself?

I've tried but did not come up with a good argument against sealed. So this should work.

[arybach]

Great! Thx vm.

[holgerbrandl]

Let's keep it open until it is actually implemented.