Add functionality similar to Jackson's @JsonUnwrapped

[ferrazoli]

See https://fasterxml.github.io/jackson-annotations/javadoc/2.8/com/fasterxml/jackson/annotation/JsonUnwrapped.html

[SentryMan]

I mean I don't mind adding it, but like why would someone want to do this?

[ferrazoli]

There's a lot of potential use cases. For instance, I have a lot of typed IDs in my project, e.g.:

record UserId (
  UUID id
) {}

If I have a User record such as:

record User (
  UserId id,
  String email,
  String name,
  ...
) {}

I don't want my serialized User to be:

{
  "id": {
    "id": "some uuid"
  },
  "email": "[email protected]",
  "name": "Some Name",
  ...
}

So it's helpful to be able to easily "flatten" certain objects.

Of course I could also provide a custom serializer, or even create an extra record for the API layer alone, but that adds a lot of boilerplate code.

[SentryMan]

There's a lot of potential use cases. For instance, I have a lot of typed IDs in my project, e.g.:

record UserId (
UUID id
) {}

You can actually make this work now with @Value

record UserId (
 @Json.Value  UUID id
) {}