/// <summary>
/// Creates a new delivery snapshot based on the complete handling history of a cargo, as well
/// as its route specification and itinerary.
/// </summary>
/// <param name="specification">Current route specification.</param>
/// <param name="itinerary">Current itinerary.</param>
/// <param name="lastHandlingEvent">Most recent handling event.</param>
/// <returns>Delivery status description.</returns>
public static Delivery DerivedFrom(
RouteSpecification specification,
Itinerary itinerary,
HandlingEvent lastHandlingEvent)
{
return(new Delivery(lastHandlingEvent, itinerary, specification));
}
private static RoutingStatus CalculateRoutingStatus(Itinerary itinerary, RouteSpecification specification)
{
if (itinerary == null)
{
return(RoutingStatus.NotRouted);
}
return(specification.IsSatisfiedBy(itinerary) ? RoutingStatus.Routed : RoutingStatus.Misrouted);
}
private Boolean CalculateMisdirectionStatus(Itinerary itinerary)
{
if (LastEvent == null)
{
return(false);
}
return(!itinerary.IsExpected(LastEvent));
}
/// <summary>
/// Creates a new delivery snapshot to reflect changes in routing, i.e. when the route
/// specification or the itinerary has changed but no additional handling of the
/// cargo has been performed.
/// </summary>
/// <param name="routeSpecification">Current route specification.</param>
/// <param name="itinerary">Current itinerary.</param>
/// <returns>New delivery status description.</returns>
public Delivery UpdateOnRouting(RouteSpecification routeSpecification, Itinerary itinerary)
{
if (routeSpecification == null)
{
throw new ArgumentNullException("routeSpecification");
}
return(new Delivery(m_lastEvent, itinerary, routeSpecification));
}
/// <summary>
/// Assigns cargo to a provided route.
/// </summary>
/// <param name="itinerary">New itinerary</param>
public void AssignToRoute(Itinerary itinerary)
{
if (itinerary == null)
{
throw new ArgumentNullException("itinerary");
}
var @event = new CargoHasBeenAssignedToRouteEvent(this, Itinerary);
Itinerary = itinerary;
Delivery = Delivery.UpdateOnRouting(RouteSpecification, Itinerary);
m_eventAggegator.Publish <CargoHasBeenAssignedToRouteEvent>(@event);
}
private Delivery(HandlingEvent lastHandlingEvent, Itinerary itinerary,
RouteSpecification specification)
{
m_calculatedAt = DateTime.Now;
m_lastEvent = lastHandlingEvent;
m_misdirected = CalculateMisdirectionStatus(itinerary);
m_routingStatus = CalculateRoutingStatus(itinerary, specification);
m_transportStatus = CalculateTransportStatus();
m_lastKnownLocation = CalculateLastKnownLocation();
m_eta = CalculateEta(itinerary);
m_nextExpectedActivity = CalculateNextExpectedActivity(specification, itinerary);
m_isUnloadedAtDestination = CalculateUnloadedAtDestination(specification);
}
private Boolean CalculateMisdirectionStatus(Itinerary itinerary)
{
if (LastEvent == null)
{
return false;
}
return !itinerary.IsExpected(LastEvent);
}
/// <summary>
/// Creates a new delivery snapshot based on the complete handling history of a cargo, as well
/// as its route specification and itinerary.
/// </summary>
/// <param name="specification">Current route specification.</param>
/// <param name="itinerary">Current itinerary.</param>
/// <param name="lastHandlingEvent">Most recent handling event.</param>
/// <returns>Delivery status description.</returns>
public static Delivery DerivedFrom(
RouteSpecification specification,
Itinerary itinerary,
HandlingEvent lastHandlingEvent)
{
return new Delivery(lastHandlingEvent, itinerary, specification);
}
/// <summary>
/// Creates a new delivery snapshot to reflect changes in routing, i.e. when the route
/// specification or the itinerary has changed but no additional handling of the
/// cargo has been performed.
/// </summary>
/// <param name="routeSpecification">Current route specification.</param>
/// <param name="itinerary">Current itinerary.</param>
/// <returns>New delivery status description.</returns>
public Delivery UpdateOnRouting(RouteSpecification routeSpecification, Itinerary itinerary)
{
if (routeSpecification == null)
{
throw new ArgumentNullException("routeSpecification");
}
return new Delivery(m_lastEvent, itinerary, routeSpecification);
}
private HandlingActivity CalculateNextExpectedActivity(RouteSpecification routeSpecification, Itinerary itinerary)
{
if (!OnTrack)
{
return(null);
}
if (LastEvent == null)
{
return(new HandlingActivity(HandlingEventType.Receive, routeSpecification.Origin));
}
switch (LastEvent.EventType)
{
case HandlingEventType.Load:
Leg lastLeg = itinerary.Legs.FirstOrDefault(x => x.LoadLocation == LastEvent.Location);
return(lastLeg != null ? new HandlingActivity(HandlingEventType.Unload, lastLeg.UnloadLocation) : null);
case HandlingEventType.Unload:
IEnumerator <Leg> enumerator = itinerary.Legs.GetEnumerator();
while (enumerator.MoveNext())
{
if (enumerator.Current.UnloadLocation == LastEvent.Location)
{
Leg currentLeg = enumerator.Current;
return(enumerator.MoveNext()
? new HandlingActivity(HandlingEventType.Load, enumerator.Current.LoadLocation)
: new HandlingActivity(HandlingEventType.Claim, currentLeg.UnloadLocation));
}
}
return(null);
case HandlingEventType.Receive:
Leg firstLeg = itinerary.Legs.First();
return(new HandlingActivity(HandlingEventType.Load, firstLeg.LoadLocation));
default:
return(null);
}
}
private Nullable <DateTime> CalculateEta(Itinerary itinerary)
{
return(OnTrack ? itinerary.FinalArrivalDate : null);
}
private Delivery(HandlingEvent lastHandlingEvent, Itinerary itinerary,
RouteSpecification specification)
{
m_calculatedAt = DateTime.Now;
m_lastEvent = lastHandlingEvent;
m_misdirected = CalculateMisdirectionStatus(itinerary);
m_routingStatus = CalculateRoutingStatus(itinerary, specification);
m_transportStatus = CalculateTransportStatus();
m_lastKnownLocation = CalculateLastKnownLocation();
m_eta = CalculateEta(itinerary);
m_nextExpectedActivity = CalculateNextExpectedActivity(specification, itinerary);
m_isUnloadedAtDestination = CalculateUnloadedAtDestination(specification);
}
/// <summary>
/// Checks whether provided itinerary (a description of transporting steps) satisfies this
/// specification.
/// </summary>
/// <param name="itinerary">An itinerary.</param>
/// <returns>True, if cargo can be transported from <see cref="Origin"/> to <see cref="Destination"/>
/// before <see cref="ArrivalDeadline"/> using provided itinerary.
/// </returns>
public Boolean IsSatisfiedBy(Itinerary itinerary)
{
return Origin == itinerary.InitialDepartureLocation &&
Destination == itinerary.FinalArrivalLocation &&
ArrivalDeadline > itinerary.FinalArrivalDate;
}
/// <summary>
/// Checks whether provided itinerary (a description of transporting steps) satisfies this
/// specification.
/// </summary>
/// <param name="itinerary">An itinerary.</param>
/// <returns>True, if cargo can be transported from <see cref="Origin"/> to <see cref="Destination"/>
/// before <see cref="ArrivalDeadline"/> using provided itinerary.
/// </returns>
public Boolean IsSatisfiedBy(Itinerary itinerary)
{
return(Origin == itinerary.InitialDepartureLocation &&
Destination == itinerary.FinalArrivalLocation &&
ArrivalDeadline > itinerary.FinalArrivalDate);
}
private static RoutingStatus CalculateRoutingStatus(Itinerary itinerary, RouteSpecification specification)
{
if (itinerary == null)
{
return RoutingStatus.NotRouted;
}
return specification.IsSatisfiedBy(itinerary) ? RoutingStatus.Routed : RoutingStatus.Misrouted;
}
private HandlingActivity CalculateNextExpectedActivity(RouteSpecification routeSpecification, Itinerary itinerary)
{
if (!OnTrack)
{
return null;
}
if (LastEvent == null)
{
return new HandlingActivity(HandlingEventType.Receive, routeSpecification.Origin);
}
switch (LastEvent.EventType)
{
case HandlingEventType.Load:
Leg lastLeg = itinerary.Legs.FirstOrDefault(x => x.LoadLocation == LastEvent.Location);
return lastLeg != null ? new HandlingActivity(HandlingEventType.Unload, lastLeg.UnloadLocation) : null;
case HandlingEventType.Unload:
IEnumerator<Leg> enumerator = itinerary.Legs.GetEnumerator();
while (enumerator.MoveNext())
{
if (enumerator.Current.UnloadLocation == LastEvent.Location)
{
Leg currentLeg = enumerator.Current;
return enumerator.MoveNext()
? new HandlingActivity(HandlingEventType.Load, enumerator.Current.LoadLocation)
: new HandlingActivity(HandlingEventType.Claim, currentLeg.UnloadLocation);
}
}
return null;
case HandlingEventType.Receive:
Leg firstLeg = itinerary.Legs.First();
return new HandlingActivity(HandlingEventType.Load, firstLeg.LoadLocation);
default:
return null;
}
}
private Nullable<DateTime> CalculateEta(Itinerary itinerary)
{
return OnTrack ? itinerary.FinalArrivalDate : null;
}
/// <summary>
/// Initializes a new instance of the <see cref="CargoHasBeenAssignedToRouteEvent"/> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="oldItinerary">The old itinerary.</param>
public CargoHasBeenAssignedToRouteEvent(Cargo source, Itinerary oldItinerary)
{
m_oldItinerary = oldItinerary;
}
/// <summary>
/// Assigns cargo to a provided route.
/// </summary>
/// <param name="itinerary">New itinerary</param>
public void AssignToRoute(Itinerary itinerary)
{
if (itinerary == null)
{
throw new ArgumentNullException("itinerary");
}
var @event = new CargoHasBeenAssignedToRouteEvent(this, Itinerary);
Itinerary = itinerary;
Delivery = Delivery.UpdateOnRouting(RouteSpecification, Itinerary);
m_eventAggegator.Publish<CargoHasBeenAssignedToRouteEvent>(@event);
}
