private static void ValidateTripMessage(TripMessage tripMessage)
{
tripMessage.Validate();
var trip = TripDal.GetTrip(tripMessage.TripId);
if (TripEvent.Begin == tripMessage.Event)
{
if (trip != null)
{
throw new TripAlreadyExistsException(
"Trip with ID {0} already exists, therefore a begin message cannot be saved.",
tripMessage.TripId);
}
}
else
{
if (null == trip)
{
throw new TripDoesNotExistException(
"Trip with ID {0} does not exist, therefore a non begin message cannot be saved.",
tripMessage.TripId);
}
if (trip.LastMessageEpoch >= tripMessage.Epoch)
{
throw new TripAlreadyHasMessageAfterEpochException(
"Trip with ID {0} already has an update after the messages epoch, therefore a non begin message cannot be saved.",
tripMessage.TripId);
}
if (trip.EndEpoch.HasValue)
{
throw new TripAlreadyEndedException(
"Trip with ID {0} has already ended, therefore a message can not be saved.", tripMessage.TripId);
}
}
}
public static Trip GetTrip(int tripId)
{
return(TripDal.GetTrip(tripId));
}
