Is it possible to specify a custom class discriminator for polymorphic deserialisation or does it al...

# serialization

[aidanvii]

Is it possible to specify a custom class discriminator for polymorphic deserialisation or does it always have to be type?

[sindrenm]

https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/json.md#class-discriminator should help. simple smile

[sindrenm]

val format = Json { classDiscriminator = "#class" }

[aidanvii]

thanks, that looks straightforward enough, struggling with Retrofit integration though

[Paul Griffith]

It seems to still be missing from the docs, but kotlinx-serialization 1.3.0 adds @JsonClassDiscriminator which lets you specify a 'local' class discriminator, instead of a global one: https://github.com/Kotlin/kotlinx.serialization/pull/1608

[sindrenm]

Oh, that's hype! Thanks!

[aidanvii]

Exactly what I needed, I need to reuse the Json instance, I don't have any control over that with retrofit unless I have multiple Retrofit instances