gistfile1.scala

// classes and typeclass instances

case class WFNode(val id: Long, val name: String, val requestedBy: Option[String] = None)
implicit val WFNodeFormat: Format[WFNode] = 
  asProduct3("id", "name", "requestedBy")(WFNode)(WFNode.unapply(_).get)

case class ValueNode(override val id: Long, override val name: String, 
  override val requestedBy: Option[String] = None, 
  var value: Option[String] = None) extends WFNode(id, name, requestedBy)
implicit val ValueNodeFormat: Format[ValueNode] = 
  asProduct4("id", "name", "requestedBy", "value")(ValueNode)(ValueNode.unapply(_).get)

case class ParameterNode(override val id: Long, override val name: String, 
  override val requestedBy: Option[String] = None, 
  initialValue: Option[String] = None) extends ValueNode(id, name, requestedBy, initialValue)
implicit val ParameterNodeFormat: Format[ParameterNode] = 
  asProduct4("id", "name", "requestedBy", "initialValue")(ParameterNode)(ParameterNode.unapply(_).get)

case class FileNode(override val id: Long, override val name: String, val fileType: String, 
  override val requestedBy : Option[String] = None,
  initialGUID: Option[String] = None) extends ValueNode(id, name, requestedBy, initialGUID)
implicit val FileNodeFormat: Format[FileNode] = 
  asProduct5("id", "name", "requestedBy", "fileType", "initialGUID")(FileNode)(FileNode.unapply(_).get)

case class AnalysisNode(id: Long, name: String, val application: String, val version: String, val analysis: String)
implicit val AnalysisNodeFormat: Format[AnalysisNode] = 
  asProduct5("id", "name", "application", "version", "analysis")(AnalysisNode)(AnalysisNode.unapply(_).get)

// test cases
describe("Serialization with another inheritance") {
  it("should serialize") {
    val vn = ValueNode(100, "value_node_name", Some("debasish"), Some("value_node_value"))
    val acc = fromjson[ValueNode](tojson(vn))
    acc should equal(vn)

    val fn = FileNode(100, "file_node_name", "file_node_file_type", Some("debasish"), Some("initial_guid"))
    val fcc = fromjson[FileNode](tojson(fn))
    fcc should equal(fn)
  }
}