I feel like I'm missing something obvious when trying to deserialise some JSON into an enum. Due to...

# serialization

[kierans777]

I feel like I'm missing something obvious when trying to deserialise some JSON into an enum.

Due to some developers not reading the spec properly, the server returns some JSON that is keyed incorrecty, and is lowercase.

{
  "healthCheck": "success"
}

I need to parse it into an object of HealthCheck

@Serializable
data class HealthCheck(
  @SerialName("healthCheck")
  @Serializable(with = StatusSerializer::class)
  val result: Status
) {
  @Serializable
  enum class Status {
    SUCCESS
  }
}

object StatusSerializer : JsonTransformingSerializer<HealthCheck.Status>(HealthCheck.Status.serializer()) {
  override fun transformDeserialize(element: JsonElement): JsonElement {
    val el = super.transformDeserialize(element)

    return JsonPrimitive(el.toString().uppercase())
  }
}

However I get an exception

HealthCheck.Status does not contain element with name '"SUCCESS"'

[Emil Kantis]

Tried adding @SerialName("success") on the enum value?

[kierans777]

Thanks @Emil Kantis for the suggestion. It doesn't work with @SerialName("success") or @SerialName("SUCCESS")

[Emil Kantis]

you would need to remove the with = StatusSerializer::class) also.

[kierans777]

Success! (pun intended)

[kierans777]

Thanks

[Emil Kantis]

you’re welcome 🙂