i have been pushing my luck a bit and started using ExpressionEncoder for more complex types like sequences of case classes etc. (where the case classes only had primitives and Strings).
it all seems to work but i think the wheels come off in certain cases in the code generation. i guess this is not unexpected, after all what i am doing is not yet supported. is there a planned path forward to support more complex types with encoders? it would be nice if we can at least support all types that spark-sql supports in general for DataFrame. best, koert
