[rules-users] Planner: Vehicle Routing, but with return to home after last delivery

[Geoffrey De Smet]

The vehicle routing example has this, which should be easy to modify to 
what you need:

rule "distanceFromLastCustomerToDepot"
     when
         $customer : VrpCustomer(previousAppearance != null)
         not VrpCustomer(previousAppearance == $customer)
     then
         VrpVehicle vehicle = $customer.getVehicle();
         insertLogical(new 
IntConstraintOccurrence("distanceFromLastCustomerToDepot", 
ConstraintType.NEGATIVE_SOFT,
                 $customer.getDistanceTo(vehicle),
                 $customer));
end


Op 27-09-12 10:03, jimirn schreef:
> Hi all,
>
> I have changed the Vehicle Routing example to suit my domain model.
>
> My domain is:
> - Consultant (the person that will drive to a DeliveryPlace and spent some
> time there, each Consultant has a max total time available, implements
> Appearance)
> - DeliveryPlace (the place where a Consultant will drive to and spent some
> time making a delivery, implements Appearance)
> - Location (a Consultant has a home and a DeliveryPlace has a location)
>
> I need the soft constraints to take into account returning from last
> DeliveryPlace to the home location of the Consultant.
>
> But how do I know if a DeliveryPlace is the last one so I can add that to
> the rule ?
>
> Right now I have a rule that just takes each DeliveryPlace and calculates
> minutes to previousAppearance:
>
> rule "minutesToPreviousAppearance"
>      when
>          $deliveryPlace : DeliveryPlace(previousAppearance != null,
> $minutesToPreviousAppearance : minutesToPreviousAppearance)
>      then
>          insertLogical(new
> IntConstraintOccurrence("minutesToPreviousAppearance",
> ConstraintType.NEGATIVE_SOFT,
>                  $minutesToPreviousAppearance,
>                  $deliveryPlace));
> end
>
>
>
> --
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