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