ObjectId de/serializer for Jerkson

gistfile1.scala

@JsonCachable
class ObjectIdSerializer extends JsonSerializer[ObjectId] {
  def serialize(id: ObjectId, json: JsonGenerator, provider: SerializerProvider) {
    json.writeString(id.toString)
  }
}

class ObjectIdDeserializer extends JsonDeserializer[ObjectId] {
  def deserialize(jp: JsonParser, context: DeserializationContext) = {
    if (!ObjectId.isValid(jp.getText)) throw context.mappingException("invalid ObjectId " + jp.getText)
    new ObjectId(jp.getText)
  }
}

object CustomJson extends com.codahale.jerkson.Json {
  // this is where we setup our Jackson module for custom de/serialization
  val module = new SimpleModule("Custom", Version.unknownVersion())
  module.addSerializer(classOf[ObjectId], new ObjectIdSerializer)
  module.addDeserializer(classOf[ObjectId], new ObjectIdDeserializer)

  mapper.registerModule(module)
}