I have the following class strucutre: ``` @Seriali...

# serialization

[Kroppeb]

I have the following class strucutre:

@Serializable
@Polymorphic
sealed class Command {
	companion object { val context = SerializersModule {
		polymorphic(CommandTest::class) {
			addSubclass(Function.serializer())
			addSubclass(Foo.serializer())
		}
		include(Foo.context)
	}}

	@Serializable
	@SerialName("function")
	class Function(val name:String): Command()

	@Serializable
	@SerialName("foo")
	@Polymorphic
	sealed class Foo : Command(){
		companion object { val context = SerializersModule {
			polymorphic(Foo::class) {
				addSubclass(FooBar.serializer())
			}
		}}

		@Serializable
		@SerialName("foobar")
		class FooBar(val x:Int, val y: Int, val z: Int): Foo()
	}
}

And I have a reader that reads each time to the next space.
I want FooBar to be serialised and deserialised by foo foobar but if i try deserialised it says foo isn't registered and I get a NPE when serialising.
Is there a way to do this?

[Dominaezzz]

Where have you registered it?

[Kroppeb]

What do you mean?

[Dominaezzz]

How do you serialize? Json.stringify?

[Kroppeb]

No a custom encoder / decoder build on ElementValueEncoder and ElementValueDecoder

[Kroppeb]

To simplify it reads a string and splits it on the spaces

[Dominaezzz]

Ah I see.

[Kroppeb]

The problem is that to deserialise foo foobar it would need to read 2 strings. But I can't do that without coding it into the reader.

[Dominaezzz]

Polymorphism is not sup..... exactly!

[Dominaezzz]

That's how it's done in the Json one.

[Kroppeb]

?

[Dominaezzz]

https://github.com/Kotlin/kotlinx.serialization/blob/a45e71af8bff3f76a3774fd0f8a1425de800a847/runtime/commonMain/src/kotlinx/serialization/json/internal/Polymorphic.kt