Question

I have a hierarchy like the following:

case class A(val a: Long, val b: String)

case class B(val c: String) extends A(a=3, b="a string")

and I’m trying to serialize it using lift-json ala the following:

val obj = B(c="another string")
val cameraJson = net.liftweb.json.Serialization.write(obj)

but what I’m seeing is that it only serializes the properties in class B and not those in A.

I’ve also tried:

compact(render(decompose(obj)))

with the same result

What gives? Is there something obvious in Scala that I’m missing?

Answer 1

case class inheritance is a deprecated feature of Scala. This should work for instance:

trait A { val a: Long; val b: String }
case class B(a: Long = 3, b: String = "a string", c: String) extends A

val obj = B(c="another string")
var ser = Serialization.write(obj)
Serialization.read[B](ser)