public void SpecifyNewRoute(IRouteSpecification routeSpecification)
{
// Thread safe, lock free sincronization
CargoState stateBeforeTransition;
CargoState previousState = CurrentState;
do
{
stateBeforeTransition = previousState;
CargoState newValue = stateBeforeTransition.SpecifyNewRoute(routeSpecification);
previousState = Interlocked.CompareExchange <CargoState>(ref this.CurrentState, newValue, stateBeforeTransition);
}while (previousState != stateBeforeTransition);
if (!previousState.Equals(this.CurrentState))
{
ChangeEventArgs <IRouteSpecification> args = new ChangeEventArgs <IRouteSpecification>(previousState.RouteSpecification, CurrentState.RouteSpecification);
EventHandler <ChangeEventArgs <IRouteSpecification> > handler = NewRouteSpecified;
if (null != handler)
{
handler(this, args);
}
}
}
public void AssignToRoute(IItinerary itinerary)
{
// Thread safe, lock free sincronization
CargoState stateBeforeTransition;
CargoState previousState = CurrentState;
do
{
stateBeforeTransition = previousState;
CargoState newValue = stateBeforeTransition.AssignToRoute(itinerary);
previousState = Interlocked.CompareExchange <CargoState>(ref this.CurrentState, newValue, stateBeforeTransition);
}while (previousState != stateBeforeTransition);
if (!previousState.Equals(this.CurrentState))
{
ChangeEventArgs <IItinerary> args = new ChangeEventArgs <IItinerary>(previousState.Itinerary, CurrentState.Itinerary);
EventHandler <ChangeEventArgs <IItinerary> > handler = ItineraryChanged;
if (null != handler)
{
handler(this, args);
}
}
}
public void Unload(Voyage.IVoyage voyage, DateTime date)
{
// Thread safe, lock free sincronization
CargoState stateBeforeTransition;
CargoState previousState = CurrentState;
do
{
stateBeforeTransition = previousState;
CargoState newValue = stateBeforeTransition.Unload(voyage, date);
previousState = Interlocked.CompareExchange <CargoState>(ref this.CurrentState, newValue, stateBeforeTransition);
}while (previousState != stateBeforeTransition);
if (!previousState.Equals(this.CurrentState))
{
HandlingEventArgs args = new HandlingEventArgs(CurrentState, CurrentState.CalculationDate);
EventHandler <HandlingEventArgs> handler = Unloaded;
if (null != handler)
{
handler(this, args);
}
}
}