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add SimpleExample described in jsprit-wiki/Example

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Stefan Schroeder 2013-06-10 07:57:28 +02:00
parent 04471bf155
commit 8dd1e72b8c
3 changed files with 81 additions and 33 deletions
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jsprit-examples/src/main/java/examples/SimpleExample.java Normal file
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package examples;
import java.util.Collection;
import util.Coordinate;
import util.Solutions;
import algorithms.SchrimpfFactory;
import analysis.SolutionPlotter;
import analysis.SolutionPrinter;
import analysis.SolutionPrinter.Print;
import basics.Service;
import basics.VehicleRoutingAlgorithm;
import basics.VehicleRoutingProblem;
import basics.VehicleRoutingProblemSolution;
import basics.io.VrpXMLWriter;
import basics.route.Vehicle;
import basics.route.VehicleImpl;
import basics.route.VehicleImpl.VehicleBuilder;
import basics.route.VehicleImpl.VehicleType;
public class SimpleExample {
public static void main(String[] args) {
/*
* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
*/
VehicleType.Builder vehicleTypeBuilder = VehicleImpl.VehicleType.Builder.newInstance("vehicleType", 2);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType"
*/
VehicleBuilder vehicleBuilder = VehicleImpl.VehicleBuilder.newInstance("vehicle");
vehicleBuilder.setLocationCoord(Coordinate.newInstance(10, 10));
vehicleBuilder.setType(vehicleType);
Vehicle vehicle = vehicleBuilder.build();
/*
* build services at the required locations, each with a capacity-demand of 1.
*/
Service service1 = Service.Builder.newInstance("1", 1).setCoord(Coordinate.newInstance(5, 7)).build();
Service service2 = Service.Builder.newInstance("2", 1).setCoord(Coordinate.newInstance(5, 13)).build();
Service service3 = Service.Builder.newInstance("3", 1).setCoord(Coordinate.newInstance(15, 7)).build();
Service service4 = Service.Builder.newInstance("4", 1).setCoord(Coordinate.newInstance(15, 13)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle);
vrpBuilder.addService(service1).addService(service2).addService(service3).addService(service4);
VehicleRoutingProblem problem = vrpBuilder.build();
/*
* get the algorithm out-of-the-box.
*/
VehicleRoutingAlgorithm algorithm = new SchrimpfFactory().createAlgorithm(problem);
/*
* and search a solution
*/
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
/*
* get the best
*/
VehicleRoutingProblemSolution bestSolution = Solutions.getBest(solutions);
new VrpXMLWriter(problem, solutions).write("output/problem-with-solution.xml");
SolutionPrinter.print(bestSolution,Print.VERBOSE);
/*
* plot
*/
SolutionPlotter.plotSolutionAsPNG(problem, bestSolution, "output/solution.png", "solution");
}
}