Java.time.Instant cannot be cast to java.util.Date even persisted as Date

[kyeljmd]

Here's a snippet of my code

@label("trip")
case class TripModel(tripId: Option[String] = None,
                     name: String,
                     createdDate: Date = new Date(),
                     startDate: Date,
                     duration: Int,
                     totalAdults: Int,
                     totalChildrens: Int,
                     @underlying vertex: Option[Vertex] = None
                    )

I am able to persist a trip model using the following code..

    val trip  = TripModel(tripId = Some(randomUUID.toString), name = ctr.tripName,
      startDate = DateUtil.convertStringToDate(ctr.startTo), duration = ctr.totalDays,
      totalAdults = ctr.totalAdults, totalChildrens = ctr.totalChildren, createdDate = new Date())

    val tripVertex = graph + trip

However upon retrieval of the persisted vertex I always receive this error.

play.api.http.HttpErrorHandlerExceptions$$anon$1: Execution exception[[ClassCastException: java.time.Instant cannot be cast to java.util.Date]]
	at play.api.http.HttpErrorHandlerExceptions$.throwableToUsefulException(HttpErrorHandler.scala:251)
	at play.api.http.DefaultHttpErrorHandler.onServerError(HttpErrorHandler.scala:178)
	at play.core.server.AkkaHttpServer$$anonfun$1.applyOrElse(AkkaHttpServer.scala:363)
	at play.core.server.AkkaHttpServer$$anonfun$1.applyOrElse(AkkaHttpServer.scala:361)
	at scala.concurrent.Future.$anonfun$recoverWith$1(Future.scala:413)
	at scala.concurrent.impl.Promise.$anonfun$transformWith$1(Promise.scala:37)
	at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60)
	at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:55)
	at akka.dispatch.BatchingExecutor$BlockableBatch.$anonfun$run$1(BatchingExecutor.scala:91)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
Caused by: java.lang.ClassCastException: java.time.Instant cannot be cast to java.util.Date
	at service.TripService$$anon$1.toCC(TripService.scala:30)
	at service.TripService$$anon$1.toCC(TripService.scala:30)
	at gremlin.scala.ScalaVertex.toCC(ScalaVertex.scala:12)
	at service.TripService.getTrip(TripService.scala:30)
	at controllers.trip.TripController.$anonfun$getTrip$1(TripController.scala:28)
	at play.api.mvc.ActionBuilder.$anonfun$apply$11(Action.scala:363)
	at scala.Function1.$anonfun$andThen$1(Function1.scala:52)
	at play.api.mvc.ActionBuilderImpl.invokeBlock(Action.scala:482)
	at play.api.mvc.ActionBuilderImpl.invokeBlock(Action.scala:480)
	at play.api.mvc.ActionBuilder$$anon$9.invokeBlock(Action.scala:331)

[mpollmeier]

Hard to tell without a simple executable example, but looks like some class in the middle instantiates an Instant and not a Date. Here's a simple example that works:

import gremlin.scala._
import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph

case class CCWithDate(d: java.util.Date)

val graph = TinkerGraph.open.asScala
val cc = CCWithDate(new java.util.Date)
val v = graph + cc
println(v.toCC[CCWithDate])