@Test
public void whenAddingDeliverShipmentWithVehDiffStartEndLocs_constraintShouldWork() {
Shipment shipment =
Shipment.Builder.newInstance("s")
.setPickupLocation(Location.newInstance(0, 1))
.setDeliveryLocation(Location.newInstance(4, 1))
.build();
VehicleImpl vehicle =
VehicleImpl.Builder.newInstance("v")
.setStartLocation(Location.newInstance(0, 0))
.setEndLocation(Location.newInstance(0, 4))
.build();
final VehicleRoutingProblem vrp =
VehicleRoutingProblem.Builder.newInstance().addJob(shipment).addVehicle(vehicle).build();
VehicleRoute route = VehicleRoute.emptyRoute();
JobInsertionContext context = new JobInsertionContext(route, shipment, vehicle, null, 0);
context.getAssociatedActivities().add(vrp.getActivities(shipment).get(0));
context.getAssociatedActivities().add(vrp.getActivities(shipment).get(1));
maxDistanceMap = new HashMap<>();
maxDistanceMap.put(vehicle, 10d);
StateManager stateManager = new StateManager(vrp);
MaxDistanceConstraint maxDistanceConstraint =
new MaxDistanceConstraint(
stateManager,
traveledDistanceId,
new TransportDistance() {
@Override
public double getDistance(
Location from, Location to, double departureTime, Vehicle vehicle) {
return vrp.getTransportCosts()
.getTransportTime(from, to, departureTime, null, vehicle);
}
},
maxDistanceMap);
Assert.assertTrue(
maxDistanceConstraint
.fulfilled(
context,
new Start(vehicle.getStartLocation(), 0, Double.MAX_VALUE),
vrp.getActivities(shipment).get(0),
new End(vehicle.getEndLocation(), 0, Double.MAX_VALUE),
0)
.equals(HardActivityConstraint.ConstraintsStatus.FULFILLED));
ActivityContext pickupContext = new ActivityContext();
pickupContext.setArrivalTime(1);
pickupContext.setEndTime(1);
pickupContext.setInsertionIndex(0);
context.setRelatedActivityContext(pickupContext);
Assert.assertTrue(
maxDistanceConstraint
.fulfilled(
context,
vrp.getActivities(shipment).get(0),
vrp.getActivities(shipment).get(1),
new End(vehicle.getEndLocation(), 0, Double.MAX_VALUE),
1)
.equals(HardActivityConstraint.ConstraintsStatus.FULFILLED));
}
@Before
public void doBefore() {
routingCosts = CostFactory.createManhattanCosts();
activityCosts = new WaitingTimeCosts();
VehicleRoutingProblem vrpMock = mock(VehicleRoutingProblem.class);
when(vrpMock.getFleetSize()).thenReturn(VehicleRoutingProblem.FleetSize.FINITE);
stateManager = new StateManager(vrpMock);
reverseActivityVisitor = new ReverseRouteActivityVisitor();
reverseActivityVisitor.addActivityVisitor(
new UpdatePracticalTimeWindows(stateManager, routingCosts, activityCosts));
Pickup pickup =
(Pickup)
Pickup.Builder.newInstance("pick")
.setLocation(Location.newInstance("0,20"))
.setTimeWindow(TimeWindow.newInstance(0, 30))
.build();
Delivery delivery =
(Delivery)
Delivery.Builder.newInstance("del")
.setLocation(Location.newInstance("20,20"))
.setTimeWindow(TimeWindow.newInstance(10, 40))
.build();
Pickup pickup2 =
(Pickup)
Pickup.Builder.newInstance("pick2")
.setLocation(Location.newInstance("20,0"))
.setTimeWindow(TimeWindow.newInstance(20, 50))
.build();
Vehicle vehicle =
VehicleImpl.Builder.newInstance("v")
.setStartLocation(Location.newInstance("0,0"))
.setType(mock(VehicleType.class))
.build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
final VehicleRoutingProblem vrp =
vrpBuilder.addJob(pickup).addJob(pickup2).addJob(delivery).build();
route =
VehicleRoute.Builder.newInstance(vehicle, mock(Driver.class))
.setJobActivityFactory(
new JobActivityFactory() {
@Override
public List<AbstractActivity> createActivities(Job job) {
return vrp.copyAndGetActivities(job);
}
})
.addService(pickup)
.addService(delivery)
.addService(pickup2)
.build();
reverseActivityVisitor.visit(route);
}
public void read(String solomonFile) {
vrpBuilder.setFleetSize(FleetSize.INFINITE);
BufferedReader reader = getReader(solomonFile);
int vehicleCapacity = 0;
int counter = 0;
String line;
while ((line = readLine(reader)) != null) {
line = line.replace("\r", "");
line = line.trim();
String[] tokens = line.split(" +");
counter++;
if (counter == 5) {
vehicleCapacity = Integer.parseInt(tokens[1]);
continue;
}
if (counter > 9) {
if (tokens.length < 7) continue;
Coordinate coord = makeCoord(tokens[1], tokens[2]);
String customerId = tokens[0];
int demand = Integer.parseInt(tokens[3]);
double start = Double.parseDouble(tokens[4]) * timeProjectionFactor;
double end = Double.parseDouble(tokens[5]) * timeProjectionFactor;
double serviceTime = Double.parseDouble(tokens[6]) * timeProjectionFactor;
if (counter == 10) {
VehicleTypeImpl.Builder typeBuilder =
VehicleTypeImpl.Builder.newInstance("solomonType")
.addCapacityDimension(0, vehicleCapacity);
typeBuilder
.setCostPerDistance(1.0 * variableCostProjectionFactor)
.setFixedCost(fixedCostPerVehicle);
VehicleTypeImpl vehicleType = typeBuilder.build();
VehicleImpl vehicle =
VehicleImpl.Builder.newInstance("solomonVehicle")
.setEarliestStart(start)
.setLatestArrival(end)
.setStartLocation(
Location.Builder.newInstance().setId(customerId).setCoordinate(coord).build())
.setType(vehicleType)
.build();
vrpBuilder.addVehicle(vehicle);
} else {
Service service =
new Service.Builder(customerId)
.addSizeDimension(0, demand)
.setLocation(
Location.Builder.newInstance().setCoordinate(coord).setId(customerId).build())
.setServiceTime(serviceTime)
.setTimeWindow(TimeWindow.newInstance(start, end))
.build();
vrpBuilder.addJob(service);
}
}
}
close(reader);
}
public void read(String filename) {
readShipments(filename);
buildShipments();
VehicleTypeImpl type =
VehicleTypeImpl.Builder.newInstance("type")
.addCapacityDimension(0, vehicleCapacity)
.setCostPerDistance(1.0)
.setFixedCost(fixCosts)
.build();
VehicleImpl vehicle =
VehicleImpl.Builder.newInstance("vehicle")
.setEarliestStart(depotOpeningTime)
.setLatestArrival(depotClosingTime)
.setStartLocation(
Location.Builder.newInstance().setCoordinate(customers.get(depotId).coord).build())
.setType(type)
.build();
vrpBuilder.addVehicle(vehicle);
}
@Test
public void whenEndLocationIsSet_constraintShouldWork() {
VehicleImpl vehicle =
VehicleImpl.Builder.newInstance("v")
.setStartLocation(Location.newInstance(0, 0))
.setEndLocation(Location.newInstance(10, 0))
.build();
Pickup pickup =
Pickup.Builder.newInstance("pickup").setLocation(Location.newInstance(10, 0)).build();
vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(vehicle).addJob(pickup).build();
route = VehicleRoute.emptyRoute();
maxDistanceMap = new HashMap<>();
maxDistanceMap.put(vehicle, 5d);
MaxDistanceConstraint maxDistanceConstraint =
new MaxDistanceConstraint(
new StateManager(vrp),
traveledDistanceId,
new TransportDistance() {
@Override
public double getDistance(
Location from, Location to, double departureTime, Vehicle vehicle) {
return vrp.getTransportCosts()
.getTransportTime(from, to, departureTime, null, vehicle);
}
},
maxDistanceMap);
JobInsertionContext context = new JobInsertionContext(route, pickup, vehicle, null, 0);
Assert.assertTrue(
maxDistanceConstraint
.fulfilled(
context,
new Start(vehicle.getStartLocation(), 0, Double.MAX_VALUE),
vrp.getActivities(pickup).get(0),
new End(vehicle.getEndLocation(), 0, Double.MAX_VALUE),
0)
.equals(HardActivityConstraint.ConstraintsStatus.NOT_FULFILLED));
}
@Test
public void itShouldSolveProblemWithIniSolutionExternallyCreated() {
Service s1 = Service.Builder.newInstance("s1").setLocation(Location.newInstance(10, 0)).build();
Service s2 = Service.Builder.newInstance("s2").setLocation(Location.newInstance(0, 10)).build();
VehicleImpl vehicle =
VehicleImpl.Builder.newInstance("v1").setStartLocation(Location.newInstance(0, 0)).build();
VehicleRoutingProblem vrp =
VehicleRoutingProblem.Builder.newInstance()
.addJob(s1)
.addJob(s2)
.addVehicle(vehicle)
.build();
VehicleRoutingAlgorithm vra = Jsprit.createAlgorithm(vrp);
/*
create ini sol
*/
VehicleRoute route1 =
VehicleRoute.Builder.newInstance(vehicle)
.setJobActivityFactory(vrp.getJobActivityFactory())
.addService(s1)
.build();
vra.addInitialSolution(new VehicleRoutingProblemSolution(Arrays.asList(route1), 20.));
try {
vra.searchSolutions();
Assert.assertTrue(true);
} catch (Exception e) {
Assert.assertFalse(true);
}
}
@Test(expected = UnsupportedOperationException.class)
public void
whenHavingShipmentsAndServicesInOneProblem_andInsertionShouldBeMadeOnRouteLevel_throwException() {
/* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
*/
VehicleTypeImpl.Builder vehicleTypeBuilder =
VehicleTypeImpl.Builder.newInstance("vehicleType").addCapacityDimension(0, 2);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType"
*/
VehicleImpl.Builder vehicleBuilder = VehicleImpl.Builder.newInstance("vehicle");
vehicleBuilder.setStartLocation(Location.newInstance(10, 10));
vehicleBuilder.setType(vehicleType);
VehicleImpl vehicle = vehicleBuilder.build();
/*
* build shipments at the required locations, each with a capacity-demand of 1.
* 4 shipments
* 1: (5,7)->(6,9)
* 2: (5,13)->(6,11)
* 3: (15,7)->(14,9)
* 4: (15,13)->(14,11)
*/
Shipment shipment1 =
Shipment.Builder.newInstance("1")
.addSizeDimension(0, 1)
.setPickupLocation(TestUtils.loc(Coordinate.newInstance(5, 7)))
.setDeliveryLocation(TestUtils.loc(Coordinate.newInstance(6, 9)))
.build();
Shipment shipment2 =
Shipment.Builder.newInstance("2")
.addSizeDimension(0, 1)
.setPickupLocation(TestUtils.loc(Coordinate.newInstance(5, 13)))
.setDeliveryLocation(TestUtils.loc(Coordinate.newInstance(6, 11)))
.build();
Shipment shipment3 =
Shipment.Builder.newInstance("3")
.addSizeDimension(0, 1)
.setPickupLocation(TestUtils.loc(Coordinate.newInstance(15, 7)))
.setDeliveryLocation(TestUtils.loc(Coordinate.newInstance(14, 9)))
.build();
Shipment shipment4 =
Shipment.Builder.newInstance("4")
.addSizeDimension(0, 1)
.setPickupLocation(TestUtils.loc(Coordinate.newInstance(15, 13)))
.setDeliveryLocation(TestUtils.loc(Coordinate.newInstance(14, 11)))
.build();
/*
* build deliveries, (implicitly picked up in the depot)
* 1: (4,8)
* 2: (4,12)
* 3: (16,8)
* 4: (16,12)
*/
Delivery delivery1 =
(Delivery)
Delivery.Builder.newInstance("5")
.addSizeDimension(0, 1)
.setLocation(TestUtils.loc(Coordinate.newInstance(4, 8)))
.build();
Delivery delivery2 =
(Delivery)
Delivery.Builder.newInstance("6")
.addSizeDimension(0, 1)
.setLocation(TestUtils.loc(Coordinate.newInstance(4, 12)))
.build();
Delivery delivery3 =
(Delivery)
Delivery.Builder.newInstance("7")
.addSizeDimension(0, 1)
.setLocation(TestUtils.loc(Coordinate.newInstance(16, 8)))
.build();
Delivery delivery4 =
(Delivery)
Delivery.Builder.newInstance("8")
.addSizeDimension(0, 1)
.setLocation(TestUtils.loc(Coordinate.newInstance(16, 12)))
.build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle);
vrpBuilder
.addJob(shipment1)
.addJob(shipment2)
.addJob(shipment3)
.addJob(shipment4)
.addJob(delivery1)
.addJob(delivery2)
.addJob(delivery3)
.addJob(delivery4)
.build();
VehicleRoutingProblem vrp = vrpBuilder.build();
final StateManager stateManager = new StateManager(vrp);
ConstraintManager constraintManager = new ConstraintManager(vrp, stateManager);
constraintManager.addLoadConstraint();
constraintManager.addTimeWindowConstraint();
VehicleFleetManager fleetManager =
new InfiniteFleetManagerFactory(vrp.getVehicles()).createFleetManager();
BestInsertionBuilder bestIBuilder =
new BestInsertionBuilder(vrp, fleetManager, stateManager, constraintManager);
bestIBuilder.setRouteLevel(2, 2);
@SuppressWarnings("unused")
InsertionStrategy bestInsertion = bestIBuilder.build();
}
@Test
public void
whenHavingOnlyServicesInOneProblem_andInsertionShouldBeMadeOnRouteLevel_itShouldAssertTrue() {
/* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
*/
VehicleTypeImpl.Builder vehicleTypeBuilder =
VehicleTypeImpl.Builder.newInstance("vehicleType").addCapacityDimension(0, 2);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType"
*/
VehicleImpl.Builder vehicleBuilder = VehicleImpl.Builder.newInstance("vehicle");
vehicleBuilder.setStartLocation(Location.newInstance(10, 10));
vehicleBuilder.setType(vehicleType);
VehicleImpl vehicle = vehicleBuilder.build();
/*
* build deliveries, (implicitly picked up in the depot)
* 1: (4,8)
* 2: (4,12)
* 3: (16,8)
* 4: (16,12)
*/
Delivery delivery1 =
(Delivery)
Delivery.Builder.newInstance("5")
.addSizeDimension(0, 1)
.setLocation(Location.newInstance(4, 8))
.build();
Delivery delivery2 =
(Delivery)
Delivery.Builder.newInstance("6")
.addSizeDimension(0, 1)
.setLocation(Location.newInstance(4, 12))
.build();
Delivery delivery3 =
(Delivery)
Delivery.Builder.newInstance("7")
.addSizeDimension(0, 1)
.setLocation(Location.newInstance(16, 8))
.build();
Delivery delivery4 =
(Delivery)
Delivery.Builder.newInstance("8")
.addSizeDimension(0, 1)
.setLocation(Location.newInstance(16, 12))
.build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder
.addVehicle(vehicle)
// vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4)
.addJob(delivery1)
.addJob(delivery2)
.addJob(delivery3)
.addJob(delivery4)
.build();
VehicleRoutingProblem vrp = vrpBuilder.build();
final StateManager stateManager = new StateManager(vrp);
ConstraintManager constraintManager = new ConstraintManager(vrp, stateManager);
constraintManager.addLoadConstraint();
constraintManager.addTimeWindowConstraint();
VehicleFleetManager fleetManager =
new InfiniteFleetManagerFactory(vrp.getVehicles()).createFleetManager();
BestInsertionBuilder bestIBuilder =
new BestInsertionBuilder(vrp, fleetManager, stateManager, constraintManager);
bestIBuilder.setRouteLevel(2, 2);
@SuppressWarnings("unused")
InsertionStrategy bestInsertion = bestIBuilder.build();
assertTrue(true);
}
@Before
public void doBefore() {
vehicle =
VehicleImpl.Builder.newInstance("v").setStartLocation(Location.newInstance(0, 0)).build();
vehicle2 =
VehicleImpl.Builder.newInstance("v2")
.setStartLocation(Location.newInstance(10, 10))
.build();
maxDistanceMap = new HashMap<>();
maxDistanceMap.put(vehicle, 200d);
maxDistanceMap.put(vehicle2, 200d);
d1 = Delivery.Builder.newInstance("d1").setLocation(Location.newInstance(10, 10)).build();
d2 = Delivery.Builder.newInstance("d2").setLocation(Location.newInstance(20, 15)).build();
pickup = Pickup.Builder.newInstance("pickup").setLocation(Location.newInstance(50, 50)).build();
s1 =
Shipment.Builder.newInstance("s1")
.setPickupLocation(Location.newInstance(35, 30))
.setDeliveryLocation(Location.newInstance(20, 25))
.build();
newDelivery =
Delivery.Builder.newInstance("new").setLocation(Location.newInstance(-10, 10)).build();
vrp =
VehicleRoutingProblem.Builder.newInstance()
.setRoutingCost(new ManhattanCosts())
.addVehicle(vehicle)
.addVehicle(vehicle2)
.addJob(d1)
.addJob(d2)
.addJob(s1)
.addJob(pickup)
.addJob(newDelivery)
.build();
route =
VehicleRoute.Builder.newInstance(vehicle)
.setJobActivityFactory(vrp.getJobActivityFactory())
.addDelivery(d1)
.addDelivery(d2)
.addPickup(s1)
.addPickup(pickup)
.addDelivery(s1)
.build();
stateManager = new StateManager(vrp);
traveledDistanceId = stateManager.createStateId("traveledDistance");
com.graphhopper.jsprit.core.algorithm.state.VehicleDependentTraveledDistance traveledDistance =
new com.graphhopper.jsprit.core.algorithm.state.VehicleDependentTraveledDistance(
new TransportDistance() {
@Override
public double getDistance(
Location from, Location to, double departureTime, Vehicle vehicle) {
return new ManhattanCosts().getDistance(from, to, departureTime, vehicle);
}
},
stateManager,
traveledDistanceId,
Arrays.asList(vehicle, vehicle2));
stateManager.addStateUpdater(traveledDistance);
stateManager.informInsertionStarts(Arrays.asList(route), Collections.<Job>emptyList());
}
public static void main(String[] args) {
/*
* some preparation - create output folder
*/
Examples.createOutputFolder();
/*
* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
*/
VehicleTypeImpl.Builder vehicleTypeBuilder =
VehicleTypeImpl.Builder.newInstance("vehicleType").addCapacityDimension(0, 2);
vehicleTypeBuilder.setCostPerDistance(1.0);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* define two vehicles and their start-locations
*
* the first two do need to return to depot
*/
Builder vehicleBuilder1 = VehicleImpl.Builder.newInstance("vehicles@[10,10]");
vehicleBuilder1.setStartLocation(loc(Coordinate.newInstance(10, 10))).setReturnToDepot(false);
vehicleBuilder1.setType(vehicleType);
VehicleImpl vehicle1 = vehicleBuilder1.build();
Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[30,30]");
vehicleBuilder2.setStartLocation(loc(Coordinate.newInstance(30, 30))).setReturnToDepot(false);
vehicleBuilder2.setType(vehicleType);
VehicleImpl vehicle2 = vehicleBuilder2.build();
Builder vehicleBuilder3 = VehicleImpl.Builder.newInstance("vehicles@[10,30]");
vehicleBuilder3.setStartLocation(loc(Coordinate.newInstance(10, 30)));
vehicleBuilder3.setType(vehicleType);
VehicleImpl vehicle3 = vehicleBuilder3.build();
Builder vehicleBuilder4 = VehicleImpl.Builder.newInstance("vehicles@[30,10]");
vehicleBuilder4.setStartLocation(loc(Coordinate.newInstance(30, 10)));
vehicleBuilder4.setType(vehicleType);
VehicleImpl vehicle4 = vehicleBuilder4.build();
/*
* build shipments at the required locations, each with a capacity-demand of 1.
*/
Shipment shipment1 =
Shipment.Builder.newInstance("1")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(5, 7)))
.setDeliveryLocation(loc(Coordinate.newInstance(6, 9)))
.build();
Shipment shipment2 =
Shipment.Builder.newInstance("2")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(5, 13)))
.setDeliveryLocation(loc(Coordinate.newInstance(6, 11)))
.build();
Shipment shipment3 =
Shipment.Builder.newInstance("3")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(15, 7)))
.setDeliveryLocation(loc(Coordinate.newInstance(14, 9)))
.build();
Shipment shipment4 =
Shipment.Builder.newInstance("4")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(15, 13)))
.setDeliveryLocation(loc(Coordinate.newInstance(14, 11)))
.build();
Shipment shipment5 =
Shipment.Builder.newInstance("5")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(25, 27)))
.setDeliveryLocation(loc(Coordinate.newInstance(26, 29)))
.build();
Shipment shipment6 =
Shipment.Builder.newInstance("6")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(25, 33)))
.setDeliveryLocation(loc(Coordinate.newInstance(26, 31)))
.build();
Shipment shipment7 =
Shipment.Builder.newInstance("7")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(35, 27)))
.setDeliveryLocation(loc(Coordinate.newInstance(34, 29)))
.build();
Shipment shipment8 =
Shipment.Builder.newInstance("8")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(35, 33)))
.setDeliveryLocation(loc(Coordinate.newInstance(34, 31)))
.build();
Shipment shipment9 =
Shipment.Builder.newInstance("9")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(5, 27)))
.setDeliveryLocation(loc(Coordinate.newInstance(6, 29)))
.build();
Shipment shipment10 =
Shipment.Builder.newInstance("10")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(5, 33)))
.setDeliveryLocation(loc(Coordinate.newInstance(6, 31)))
.build();
Shipment shipment11 =
Shipment.Builder.newInstance("11")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(15, 27)))
.setDeliveryLocation(loc(Coordinate.newInstance(14, 29)))
.build();
Shipment shipment12 =
Shipment.Builder.newInstance("12")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(15, 33)))
.setDeliveryLocation(loc(Coordinate.newInstance(14, 31)))
.build();
Shipment shipment13 =
Shipment.Builder.newInstance("13")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(25, 7)))
.setDeliveryLocation(loc(Coordinate.newInstance(26, 9)))
.build();
Shipment shipment14 =
Shipment.Builder.newInstance("14")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(25, 13)))
.setDeliveryLocation(loc(Coordinate.newInstance(26, 11)))
.build();
Shipment shipment15 =
Shipment.Builder.newInstance("15")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(35, 7)))
.setDeliveryLocation(loc(Coordinate.newInstance(34, 9)))
.build();
Shipment shipment16 =
Shipment.Builder.newInstance("16")
.addSizeDimension(0, 1)
.setPickupLocation(loc(Coordinate.newInstance(35, 13)))
.setDeliveryLocation(loc(Coordinate.newInstance(34, 11)))
.build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2).addVehicle(vehicle3).addVehicle(vehicle4);
vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
vrpBuilder.addJob(shipment9).addJob(shipment10).addJob(shipment11).addJob(shipment12);
vrpBuilder.addJob(shipment13).addJob(shipment14).addJob(shipment15).addJob(shipment16);
vrpBuilder.setFleetSize(FleetSize.FINITE);
VehicleRoutingProblem problem = vrpBuilder.build();
/*
* get the algorithm out-of-the-box.
*/
VehicleRoutingAlgorithm algorithm = Jsprit.createAlgorithm(problem);
// algorithm.setMaxIterations(30000);
/*
* and search a solution
*/
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
/*
* get the best
*/
VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
/*
* write out problem and solution to xml-file
*/
new VrpXMLWriter(problem, solutions).write("output/shipment-problem-with-solution.xml");
/*
* print nRoutes and totalCosts of bestSolution
*/
SolutionPrinter.print(bestSolution);
/*
* plot problem without solution
*/
Plotter problemPlotter = new Plotter(problem);
problemPlotter.plotShipments(true);
problemPlotter.plot(
"output/enRoutePickupAndDeliveryWithMultipleLocationsExample_problem.png",
"en-route pickup and delivery");
/*
* plot problem with solution
*/
Plotter solutionPlotter =
new Plotter(
problem, Arrays.asList(Solutions.bestOf(solutions).getRoutes().iterator().next()));
solutionPlotter.plotShipments(true);
solutionPlotter.plot(
"output/enRoutePickupAndDeliveryWithMultipleLocationsExample_solution.png",
"en-route pickup and delivery");
new GraphStreamViewer(problem, Solutions.bestOf(solutions))
.labelWith(Label.ACTIVITY)
.setRenderDelay(100)
.setRenderShipments(true)
.display();
}