Can I get the serializer for type `Entity<T>`? Assuming T is @Serializable, how do I write `Js...

# serialization

[v79]

Can I get the serializer for type Entity<T>? Assuming T is @Serializable, how do I write Json.encodeToString(T.serializer(),entity)? Ideally without reflection because presumably kotlinx.serialization does it without reflection?

[Adam S]

I believe the intended method is by using SerializersModule, but T can’t be type-erased

import kotlinx.serialization.KSerializer
import kotlinx.serialization.modules.SerializersModule
import kotlinx.serialization.serializer

val serializersModule = SerializersModule {  }

fun <T> failure() {
  // Cannot use 'T' as reified type parameter. Use a class instead.
  val serializer: KSerializer<T> = serializersModule.serializer<T>()
}

inline fun <reified T> reified() {
  val serializer: KSerializer<T> = serializersModule.serializer<T>()
}

[v79]

These are big methods, I don't think inline is an option. I shall do more reading.

[ephemient]

there is a non-inline SerializersModule.serializer(KType) function

[ephemient]

to get a KType you can either use typeOf<T>() where T is not type-erased, or T::class.createType() where T is type-erased but you have access to KClass<T>, assuming it has no type parameters

[v79]

I wonder how KTor handles it... Lots to learn! I'll be back...

[v79]

Cannot use 'Nothing' as reified type parameter