/*******************************************************************************
* 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.io.VrpXMLWriter;
import jsprit.core.problem.job.Job;
import jsprit.core.problem.job.Service;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.Vehicle;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleType;
import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.Solutions;
import jsprit.instance.reader.SolomonReader;
import java.util.Collection;
public class SolomonWithSkillsExample {
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")
.setStartLocationCoordinate(solomonVehicle.getStartLocationCoordinate()).setStartLocationId(solomonVehicle.getStartLocationId())
.setEarliestStart(solomonVehicle.getEarliestDeparture())
.setType(newType).build();
VehicleImpl skill2Vehicle = VehicleImpl.Builder.newInstance("skill2_vehicle_"+i).addSkill("skill2")
.setStartLocationCoordinate(solomonVehicle.getStartLocationCoordinate()).setStartLocationId(solomonVehicle.getStartLocationId())
.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.getCoord().getY()<50.){
skillServiceBuilder = Service.Builder.newInstance(service.getId()+"_skill2").setServiceTime(service.getServiceDuration())
.setCoord(service.getCoord()).setLocationId(service.getLocationId()).setTimeWindow(service.getTimeWindow())
.addSizeDimension(0,service.getSize().get(0));
skillServiceBuilder.addRequiredSkill("skill2");
}
else {
skillServiceBuilder = Service.Builder.newInstance(service.getId()+"_skill1").setServiceTime(service.getServiceDuration())
.setCoord(service.getCoord()).setLocationId(service.getLocationId()).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 = vraBuilder.build();
// vra.setNuOfIterations(500);
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");
}
}