Hi people, how come regardless of my `Json {}` con...

# serialization

[Nmrsmn]

Hi people, how come regardless of my Json {} configuration the serialisation of the following class results in only a type and is missing the state value..

@Serializable
data object Toggle : StateAction {
    @EncodeDefault(EncodeDefault.Mode.ALWAYS)
    override val state: State = State.TOGGLE
}

If I change it to an data class with the state having the same default value it works..
What is this kind of mechanic and how to make sure it is working?

[Adam S]

I would guess that the plugin-generated serializer sees that it's an object and won't bother adding fields to the descriptor.

If you have a dig through the SerialDescriptor, does that seem to be the case?

val serializer = Toggle.serializer()
val elementNames = serializer.descriptor.elementDescriptors.joinToString { it.serialName }
println("elementNames: $elementNames")

Perhaps the generated descriptor should check the properties of an object, to see if there are @EncodeDefault fields? Have you looked on the GitHub issue board to see if there's a similar issue?

You could hand write a serializer, but the easiest option would be to just make Toggle a class!

[Nmrsmn]

Thanks for the answer Adam. While digging through the descriptor it indeed is empty and I think you’re right. Haven’t found any issues on the board. I’ve changed the state action interface into a data class an made some companion objects for quick access.. Thanks for the help