/******************************************************************************* * 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 . ******************************************************************************/ package jsprit.examples; import jsprit.analysis.toolbox.Plotter; import jsprit.core.algorithm.VehicleRoutingAlgorithm; import jsprit.core.algorithm.box.Jsprit; import jsprit.core.problem.Location; import jsprit.core.problem.VehicleRoutingProblem; import jsprit.core.problem.job.Break; import jsprit.core.problem.job.Service; import jsprit.core.problem.solution.VehicleRoutingProblemSolution; import jsprit.core.problem.solution.route.activity.TimeWindow; 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.Solutions; import java.util.Collection; public class BreakExample { public static void main(String[] args) { /* * get a vehicle type-builder and build a type with the typeId "vehicleType" and one capacity dimension, i.e. weight, and capacity dimension value of 2 */ final int WEIGHT_INDEX = 0; VehicleTypeImpl.Builder vehicleTypeBuilder = VehicleTypeImpl.Builder.newInstance("vehicleType") .addCapacityDimension(WEIGHT_INDEX, 2).setCostPerWaitingTime(1.); VehicleType vehicleType = vehicleTypeBuilder.build(); /* * get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType" */ Builder vehicleBuilder = Builder.newInstance("v1"); vehicleBuilder.setStartLocation(Location.newInstance(10, 10)); Break myFirstBreak = Break.Builder.newInstance("myFirstBreak") .setTimeWindow(TimeWindow.newInstance(10, 15)).setServiceTime(100).build(); vehicleBuilder.setBreak(myFirstBreak); vehicleBuilder.setType(vehicleType); VehicleImpl vehicle = vehicleBuilder.build(); VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setStartLocation(Location.newInstance(0, 10)).setType(vehicleType) .setBreak((Break) Break.Builder.newInstance("mySecondBreak").setTimeWindow(TimeWindow.newInstance(5,10)).setServiceTime(10).build()).build(); /* * build services at the required locations, each with a capacity-demand of 1. */ Service service1 = Service.Builder.newInstance("1").addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(5, 7)).build(); Service service2 = Service.Builder.newInstance("2").addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(5, 13)).build(); Service service3 = Service.Builder.newInstance("3").addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(15, 7)).build(); Service service4 = Service.Builder.newInstance("4").addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(15, 13)).build(); VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance(); vrpBuilder.addVehicle(vehicle); vrpBuilder.addJob(service1).addJob(service2).addJob(service3).addJob(service4).addVehicle(v2); vrpBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE); VehicleRoutingProblem problem = vrpBuilder.build(); /* * get the algorithm out-of-the-box. */ VehicleRoutingAlgorithm algorithm = Jsprit.Builder.newInstance(problem) .setProperty(Jsprit.Strategy.CLUSTER_REGRET,"0.") .setProperty(Jsprit.Strategy.CLUSTER_BEST,"0.").buildAlgorithm(); /* * and search a solution */ Collection solutions = algorithm.searchSolutions(); /* * get the best */ VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions); SolutionPrinter.print(problem, bestSolution, SolutionPrinter.Print.VERBOSE); /* * plot */ new Plotter(problem,bestSolution).plot("output/plot","breaks"); } }