👋 Playing around with Values4k and http4k. Say I have quite a few IDs in my system, all done like this

class NoteId(value: UUID): AbstractValue<UUID>(value)

This seems to kind of work, however now it's returning in my API as:

"id" : {
         "value" : "00000000-0000-0000-0000-000000000000"
       }

Instead of what i'd prefer which is

"id" : "00000000-0000-0000-0000-000000000000"

I am trying to avoid adding each ID to my

ConfigurableJackson

as there's potentially quite a few. I tried to see where the

AbstractValue

was being auto-converted but couldn't see it anywhere in the

ConfigurableJackson

. Not sure if i'm missing something obvious here.

Sadly, registering them all individually in your

ConfigurableJackson

is the best way I know of.

tbh - i tend to just list them - even if there are quite a few. doesn't take long. I also write a test that serializing all types that are a stringvalue that are in use don't put "value" in the json, so its all tested.

You need to register them with the value() method in the JSON config. Also - each microtype should extend the relevant ValueTypeFactory for maximum ease.

Dang that's unfortunate, well if I must - thanks

Yes, if you're extending the

ValueFactory

properly, you should have something like this:

class UserId private constructor(value: UUID): UuidValue(value) {
    companion object: UuidValueFactory<UserId>(::UserId)
}

val myJson = Jackson.custom {
    value(UserId)
}

The ValueFactory is pretty important for taking advantage of validation and masking. Also - the main constructor should be private to enforce the usage of the UserId.of() for construction

If it's possible, it would allow me to delete almost all my custom marshallers!

Haha i'm glad it troubles you too @dave, it felt like I was able to get something close but not quite there