Neo4jREST.mapFormat doesn't support JsNull values about anormcypher HOT 5 CLOSED

  implicit val mapFormat = new Format[Map[String, Any]] {
    def read(xs: Seq[(String, JsValue)]): Map[String, Any] = (xs map {
      case (k, JsBoolean(b)) => k -> b
      case (k, JsNumber(n)) => k -> n
      case (k, JsString(s)) => k -> s
      case (k, JsArray(bs)) if (bs.forall(_.isInstanceOf[JsBoolean])) =>
        k -> bs.asInstanceOf[Seq[JsBoolean]].map(_.value)
      case (k, JsArray(ns)) if (ns.forall(_.isInstanceOf[JsNumber])) =>
        k -> ns.asInstanceOf[Seq[JsNumber]].map(_.value)
      case (k, JsArray(ss)) if (ss.forall(_.isInstanceOf[JsString])) =>
        k -> ss.asInstanceOf[Seq[JsString]].map(_.value)
      case (k, JsObject(o)) => k -> read(o.toSeq)
      case (k, JsArray(ss)) if(ss.forall(_.isInstanceOf[JsObject]))=>   // handle JsArray[JsObject]
        k -> ss.asInstanceOf[Seq[JsObject]]
      case _ => throw new RuntimeException(s"unsupported type")
    }).toMap