@Override
public HardSoftLongScore calculateScore(VehicleRoutingSolution solution, int initScore) {
boolean timeWindowed = solution instanceof TimeWindowedVehicleRoutingSolution;
List<Customer> customerList = solution.getCustomerList();
List<Vehicle> vehicleList = solution.getVehicleList();
Map<Vehicle, Integer> vehicleDemandMap = new HashMap<>(vehicleList.size());
for (Vehicle vehicle : vehicleList) {
vehicleDemandMap.put(vehicle, 0);
}
long hardScore = 0L;
long softScore = 0L;
for (Customer customer : customerList) {
Standstill previousStandstill = customer.getPreviousStandstill();
if (previousStandstill != null) {
Vehicle vehicle = customer.getVehicle();
vehicleDemandMap.put(vehicle, vehicleDemandMap.get(vehicle) + customer.getDemand());
// Score constraint distanceToPreviousStandstill
softScore -= customer.getDistanceFromPreviousStandstill();
if (customer.getNextCustomer() == null) {
// Score constraint distanceFromLastCustomerToDepot
softScore -= customer.getLocation().getDistanceTo(vehicle.getLocation());
}
if (timeWindowed) {
TimeWindowedCustomer timeWindowedCustomer = (TimeWindowedCustomer) customer;
long dueTime = timeWindowedCustomer.getDueTime();
Long arrivalTime = timeWindowedCustomer.getArrivalTime();
if (dueTime < arrivalTime) {
// Score constraint arrivalAfterDueTime
hardScore -= (arrivalTime - dueTime);
}
}
}
}
for (Map.Entry<Vehicle, Integer> entry : vehicleDemandMap.entrySet()) {
int capacity = entry.getKey().getCapacity();
int demand = entry.getValue();
if (demand > capacity) {
// Score constraint vehicleCapacity
hardScore -= (demand - capacity);
}
}
// Score constraint arrivalAfterDueTimeAtDepot is a build-in hard constraint in
// VehicleRoutingImporter
return HardSoftLongScore.valueOf(initScore, hardScore, softScore);
}
