public static Cargo NewCargo(TrackingId trackingId, Location origin, Location destination,
DateTime arrivalDeadline)
{
var routeSpecification = new RouteSpecification(origin, destination, arrivalDeadline);
return(new Cargo(trackingId, routeSpecification));
}
public Cargo(TrackingId trackingId, RouteSpecification routeSpecification)
{
Validate.NotNull(trackingId, "Tracking ID is required");
Validate.NotNull(routeSpecification, "Route specification is required");
this.trackingId = trackingId;
// Cargo origin never changes, even if the route specification changes.
// However, at creation, cargo orgin can be derived from the initial route specification.
origin = routeSpecification.Origin;
this.routeSpecification = routeSpecification;
delivery = Delivery.DerivedFrom(this.routeSpecification, itinerary, HandlingHistory.EMPTY);
}