Data classes to parse JSON

Support
1

Hello. To parse JSON with kotlinx.serialization I use data classes. How this structure could be improved?

@Serializable
data class Parent(
    @SerialName("Parent")
    val someClass: SomeClass
)

@Serializable
data class SomeClass(
    @SerialName("SpaceShip")
    val ship: String,
    @SerialName("Mark")
    val mark: Int
)

Main code:

fun getSomeClass(inputStream: InputStream): SomeClass {
    val json = Json(JsonConfiguration.Stable)
    val jsonString = Scanner(inputStream).useDelimiter("\\A").next()
    val parent = json.parse(Parent.serializer(), jsonString)
    return parent.someClass
}

Is it possible to make a nested data class or to use some kind of Any type and act like in Javascript? There can be a lot of unnecessary data in JSON responce and some of important are within 4+ level from top. Is there a kind of fast adapter mechanism persists?

2

Due to the statically typed nature of Kotlin, no it is not possible.
Also that’s not only for Kotlin, but for every statically typed language.

3

Yes, I know. Don’t like to spend much time with non-primitive types. But maybe there is a way to short the code?

4

Not much aside from naming the fields the same way you want them in the json!
Have a look at many classes I wrote here, maybe you can find something…

5

I think, I saw something like this here