I'd suppose it's not possible to use a DataTypeCon...

# komapper

[dave08]

I'd suppose it's not possible to use a DataTypeConverter to map a field type to a sealed class instance based on two fields in the database?

[Toshihiro Nakamura]

That is impossible.
But what about using Embedded Value that implements a sealed interface?
In the linked example, the Money class would implement the interface.
https://www.komapper.org/docs/reference/entity-class/#komapperembedded