How can I write my custom serializer to achieve the followin

Question

How can I write my custom serializer to achieve the following ``` Serializable data class Foo val name String val bar Bar Serializable sealed class Bar data class Bar1 val x String Bar data class Bar2 val y Int Bar val foo1 = Foo myFoo1 Bar1 Bar1 val foo2 = Foo myFoo2 Bar2 2 ``` as JSON it should be ``` myFoo1 type bar1 x Bar1 myFoo2 type bar2 y 2 ```

jw · Answer

You don t need one

jw · Answer

Slap ` SerialName bar1 ` on `Bar` and ` SerialName bar2 ` on `Bar2` and you re done

jw · Answer

oh do you mean for `Foo`

jw · Answer

you can t quite make that exact transformation because names belong to the parent object what does a type like ``` Serializable class Enclosing val one Foo val two Foo ``` serialize as

Endre Deak · Answer

for the context I m trying to make wrappers around this API <https microsoft github io presidio api docs api docs html tag Anonymizer paths ~1anonymize post>

Endre Deak · Answer

and the list of anonymizers is the question if possible I d avoid creating a separate type for every single field but it might be the case that I d have to

Endre Deak · Answer

or I just pick a different serializer lib like GSON where it s possible

jw · Answer

Looks like pretty standard polymorphism <https github com Kotlin kotlinx serialization blob master docs polymorphism md>

Endre Deak · Answer

not sure how there are multiple dynamic structure names e g `PERSON` and `PHONE NUMBER` and there are multiple field sets that could go into that structure for example ``` anonymizers PERSON type redact PHONE NUMBER type replace new value ANONYMIZED ``` I m not sure how this could be created dynamically

jw · Answer

I see For that I d do a `List lt Anonymizer gt ` and a custom serializer for the `anonymizers` property which converted the list into the map This goes back to what I was saying about the parent object owning the name the `anonymizers` serializer creates the parent object and thus can write names based on the child elements

Endre Deak · Answer

ahh I haven t realized that it s actually a map

Endre Deak · Answer

man facepalming

jw · Answer

i have to run so if you have any other questions or more specific questions about how to do it hopefully someone else can chime in

Endre Deak · Answer

I think I got it from here

Endre Deak · Answer

pray

Endre Deak · Answer

fwiw the final structure looks like this ``` Serializable data class Request val anonymizers Map lt String AnonymizerType gt = null Serializable sealed class AnonymizerType Serializable SerialName replace data class Replace SerialName new value val newValue String AnonymizerType Serializable SerialName redact object Redact AnonymizerType ```