public static void main(String[] args) {
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
new SolomonReader(vrpBuilder).read("input/C101_solomon.txt");
VehicleRoutingProblem vrp = vrpBuilder.build();
// y >= 50 skill1 otherwise skill2
// two vehicles: v1 - skill1 #5; v2 - skill2 #6
Vehicle solomonVehicle = vrp.getVehicles().iterator().next();
VehicleType newType = solomonVehicle.getType();
VehicleRoutingProblem.Builder skillProblemBuilder = VehicleRoutingProblem.Builder.newInstance();
for (int i = 0; i < 5; i++) {
VehicleImpl skill1Vehicle =
VehicleImpl.Builder.newInstance("skill1_vehicle_" + i)
.addSkill("skill1")
.setStartLocation(
Location.Builder.newInstance()
.setId(solomonVehicle.getStartLocation().getId())
.setCoordinate(solomonVehicle.getStartLocation().getCoordinate())
.build())
.setEarliestStart(solomonVehicle.getEarliestDeparture())
.setType(newType)
.build();
VehicleImpl skill2Vehicle =
VehicleImpl.Builder.newInstance("skill2_vehicle_" + i)
.addSkill("skill2")
.setStartLocation(
Location.Builder.newInstance()
.setId(solomonVehicle.getStartLocation().getId())
.setCoordinate(solomonVehicle.getStartLocation().getCoordinate())
.build())
.setEarliestStart(solomonVehicle.getEarliestDeparture())
.setType(newType)
.build();
skillProblemBuilder.addVehicle(skill1Vehicle).addVehicle(skill2Vehicle);
}
for (Job job : vrp.getJobs().values()) {
Service service = (Service) job;
Service.Builder skillServiceBuilder;
if (service.getLocation().getCoordinate().getY() < 50.) {
skillServiceBuilder =
Service.Builder.newInstance(service.getId() + "_skill2")
.setServiceTime(service.getServiceDuration())
.setLocation(
Location.Builder.newInstance()
.setId(service.getLocation().getId())
.setCoordinate(service.getLocation().getCoordinate())
.build())
.setTimeWindow(service.getTimeWindow())
.addSizeDimension(0, service.getSize().get(0));
skillServiceBuilder.addRequiredSkill("skill2");
} else {
skillServiceBuilder =
Service.Builder.newInstance(service.getId() + "_skill1")
.setServiceTime(service.getServiceDuration())
.setLocation(
Location.Builder.newInstance()
.setId(service.getLocation().getId())
.setCoordinate(service.getLocation().getCoordinate())
.build())
.setTimeWindow(service.getTimeWindow())
.addSizeDimension(0, service.getSize().get(0));
skillServiceBuilder.addRequiredSkill("skill1");
}
skillProblemBuilder.addJob(skillServiceBuilder.build());
}
skillProblemBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE);
VehicleRoutingProblem skillProblem = skillProblemBuilder.build();
VehicleRoutingAlgorithmBuilder vraBuilder =
new VehicleRoutingAlgorithmBuilder(skillProblem, "input/algorithmConfig_solomon.xml");
vraBuilder.addCoreConstraints();
vraBuilder.addDefaultCostCalculators();
StateManager stateManager = new StateManager(skillProblem);
stateManager.updateSkillStates();
ConstraintManager constraintManager = new ConstraintManager(skillProblem, stateManager);
constraintManager.addSkillsConstraint();
VehicleRoutingAlgorithm vra =
Jsprit.Builder.newInstance(skillProblem)
.setStateAndConstraintManager(stateManager, constraintManager)
.buildAlgorithm();
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
VehicleRoutingProblemSolution solution = Solutions.bestOf(solutions);
SolutionPrinter.print(skillProblem, solution, SolutionPrinter.Print.VERBOSE);
new Plotter(skillProblem, solution).plot("output/skill_solution", "solomon_with_skills");
new VrpXMLWriter(skillProblem, solutions).write("output/solomon_with_skills");
}