/*******************************************************************************
* Copyright (C) 2014 Stefan Schroeder
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package jsprit.examples;
import jsprit.analysis.toolbox.Plotter;
import jsprit.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.VehicleRoutingAlgorithmBuilder;
import jsprit.core.algorithm.state.StateManager;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.constraint.ConstraintManager;
import jsprit.core.problem.constraint.ServiceDeliveriesFirstConstraint;
import jsprit.core.problem.io.VrpXMLWriter;
import jsprit.core.problem.job.Delivery;
import jsprit.core.problem.job.Shipment;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleImpl.Builder;
import jsprit.core.problem.vehicle.VehicleType;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.Coordinate;
import jsprit.core.util.Solutions;
import jsprit.util.Examples;
import java.util.Collection;
public class SimpleEnRoutePickupAndDeliveryWithDepotBoundedDeliveriesExample {
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);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType"
*/
Builder vehicleBuilder = VehicleImpl.Builder.newInstance("vehicle");
vehicleBuilder.setStartLocationCoordinate(Coordinate.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).setPickupCoord(Coordinate.newInstance(5, 7)).setDeliveryCoord(Coordinate.newInstance(6, 9)).build();
Shipment shipment2 = Shipment.Builder.newInstance("2").addSizeDimension(0, 1).setPickupCoord(Coordinate.newInstance(5, 13)).setDeliveryCoord(Coordinate.newInstance(6, 11)).build();
Shipment shipment3 = Shipment.Builder.newInstance("3").addSizeDimension(0, 1).setPickupCoord(Coordinate.newInstance(15, 7)).setDeliveryCoord(Coordinate.newInstance(14, 9)).build();
Shipment shipment4 = Shipment.Builder.newInstance("4").addSizeDimension(0, 1).setPickupCoord(Coordinate.newInstance(15, 13)).setDeliveryCoord(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).setCoord(Coordinate.newInstance(4, 8)).build();
Delivery delivery2 = (Delivery) Delivery.Builder.newInstance("6").addSizeDimension(0, 1).setCoord(Coordinate.newInstance(4, 12)).build();
Delivery delivery3 = (Delivery) Delivery.Builder.newInstance("7").addSizeDimension(0, 1).setCoord(Coordinate.newInstance(16, 8)).build();
Delivery delivery4 = (Delivery) Delivery.Builder.newInstance("8").addSizeDimension(0, 1).setCoord(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 problem = vrpBuilder.build();
/*
* build the algorithm
*/
VehicleRoutingAlgorithmBuilder vraBuilder = new VehicleRoutingAlgorithmBuilder(problem,"input/algorithmConfig.xml");
vraBuilder.addCoreConstraints();
vraBuilder.addDefaultCostCalculators();
StateManager stateManager = new StateManager(problem);
ConstraintManager constraintManager = new ConstraintManager(problem,stateManager);
constraintManager.addConstraint(new ServiceDeliveriesFirstConstraint(), ConstraintManager.Priority.CRITICAL);
vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
VehicleRoutingAlgorithm algorithm = vraBuilder.build();
/*
* and search a solution
*/
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
/*
* get the best
*/
VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
new VrpXMLWriter(problem, solutions).write("output/mixed-shipments-services-problem-with-solution.xml");
SolutionPrinter.print(bestSolution);
/*
* plot
*/
Plotter problemPlotter = new Plotter(problem);
problemPlotter.plotShipments(true);
problemPlotter.plot("output/simpleMixedEnRoutePickupAndDeliveryExample_problem.png", "en-route pd and depot bounded deliveries");
Plotter solutionPlotter = new Plotter(problem,Solutions.bestOf(solutions));
solutionPlotter.plotShipments(true);
solutionPlotter.plot("output/simpleMixedEnRoutePickupAndDeliveryExample_solution.png", "en-route pd and depot bounded deliveries");
}
}