added examples.MultipleDepotWithInitialRoutesExample to illustrate

initialRoutes

jsprit-examples/src/main/java/jsprit/examples/MultipleDepotWithInitialRoutesExample.java

@@ -0,0 +1,99 @@
+/*******************************************************************************
+ * Copyright (C) 2013  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 java.util.Collection;
+
+import jsprit.analysis.toolbox.Plotter;
+import jsprit.analysis.toolbox.Plotter.Label;
+import jsprit.analysis.toolbox.SolutionPrinter;
+import jsprit.core.algorithm.VehicleRoutingAlgorithm;
+import jsprit.core.algorithm.io.VehicleRoutingAlgorithms;
+import jsprit.core.problem.VehicleRoutingProblem;
+import jsprit.core.problem.VehicleRoutingProblem.Builder;
+import jsprit.core.problem.io.VrpXMLReader;
+import jsprit.core.problem.job.Job;
+import jsprit.core.problem.job.Service;
+import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
+import jsprit.core.problem.solution.route.VehicleRoute;
+import jsprit.core.problem.vehicle.Vehicle;
+import jsprit.core.util.Solutions;
+import jsprit.util.Examples;
+
+
+public class MultipleDepotWithInitialRoutesExample {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		/*
+		 * some preparation - create output folder
+		 */
+		Examples.createOutputFolder();
+		
+		VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
+		/*
+		 * Read cordeau-instance p01, BUT only its services without any vehicles 
+		 */
+		new VrpXMLReader(vrpBuilder).read("input/cordeau01.xml");
+		VehicleRoute initialRoute = VehicleRoute.Builder.newInstance(getVehicle("1_4_vehicle",vrpBuilder)).addService(getService("44",vrpBuilder))
+				.addService(getService("26",vrpBuilder)).build();
+		vrpBuilder.addInitialVehicleRoute(initialRoute);
+		
+		/*
+		 * build the problem
+		 */
+		VehicleRoutingProblem vrp = vrpBuilder.build();
+		assert !vrp.getJobs().containsKey("26") : "strange. service 26 should not be part of the problem";
+		assert !vrp.getJobs().containsKey("44") : "strange. service 26 should not be part of the problem";
+		
+		/*
+		 * plot to see how the problem looks like
+		 */
+		new Plotter(vrp).setLabel(Label.ID).plot("output/cordeau01_problem_withInitialRoute.png", "c");
+
+		/*
+		 * solve the problem
+		 */
+		VehicleRoutingAlgorithm vra = VehicleRoutingAlgorithms.readAndCreateAlgorithm(vrp, "input/algorithmConfig_noVehicleSwitch.xml");
+		Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
+		
+		SolutionPrinter.print(Solutions.bestOf(solutions));
+		
+		new Plotter(vrp, Solutions.bestOf(solutions)).setLabel(Label.ID).plot("output/cordeau01_solution_withInitialRoute.png", "p01");
+		
+		
+	}
+
+	private static Service getService(String serviceId, Builder vrpBuilder) {
+		for(Job j : vrpBuilder.getAddedJobs()){
+			if(j.getId().equals(serviceId)){
+				return (Service)j;
+			}
+		}
+		return null;
+	}
+
+	private static Vehicle getVehicle(String vehicleId, Builder vrpBuilder) {
+		for(Vehicle v : vrpBuilder.getAddedVehicles()){
+			if(v.getId().equals(vehicleId)) return v;
+		}
+		return null;
+	}
+
+}