fix algorithmSearchProgress...Listener - reset it when algorithm starts,

deprecate setters VehicleRoutingProblem to make it immutable in the next
release, add Example

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

@@ -0,0 +1,64 @@
+package examples;
+
+import readers.SolomonReader;
+import algorithms.GreedySchrimpfFactory;
+import algorithms.SchrimpfFactory;
+import analysis.AlgorithmSearchProgressChartListener;
+import analysis.StopWatch;
+import basics.VehicleRoutingAlgorithm;
+import basics.VehicleRoutingProblem;
+import basics.algo.VehicleRoutingAlgorithmListeners.Priority;
+
+public class CompareAlgorithmExample {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+
+		/*
+		 * Build the problem.
+		 * 
+		 * But define a problem-builder first.
+		 */
+		VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
+		
+		/*
+		 * A solomonReader reads solomon-instance files, and stores the required information in the builder.
+		 */
+		new SolomonReader(vrpBuilder).read("input/C101_solomon.txt");
+		
+		/*
+		 * Finally, the problem can be built. By default, transportCosts are crowFlyDistances (as usually used for vrp-instances).
+		 */
+		VehicleRoutingProblem vrp = vrpBuilder.build();
+		
+		/*
+		 * Get schrimpf with threshold accepting
+		 * Note that Priority.LOW is a way to priorize AlgorithmListeners
+		 */
+		VehicleRoutingAlgorithm vra_withThreshold = new SchrimpfFactory().createAlgorithm(vrp);
+		vra_withThreshold.getAlgorithmListeners().addListener(new AlgorithmSearchProgressChartListener("output/schrimpfThreshold_progress.png"), Priority.LOW);
+		vra_withThreshold.getAlgorithmListeners().addListener(new StopWatch(), Priority.HIGH);
+		/*
+		 * Get greedy schrimpf
+		 */
+		VehicleRoutingAlgorithm vra_greedy = new GreedySchrimpfFactory().createAlgorithm(vrp);
+		vra_greedy.getAlgorithmListeners().addListener(new AlgorithmSearchProgressChartListener("output/schrimpfGreedy_progress.png"), Priority.LOW);
+		vra_greedy.getAlgorithmListeners().addListener(new StopWatch(), Priority.HIGH);
+
+		/*
+		 * run both
+		 */
+		vra_withThreshold.searchSolutions();
+		
+		vra_greedy.searchSolutions();
+		
+		
+		vra_greedy.setPrematureBreak(40);
+		vra_greedy.searchSolutions();
+		
+		
+	}
+
+}

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

@@ -66,7 +66,7 @@ public class SolomonExample {
 		 * The algorithm can be defined and configured in an xml-file.
 		 */
 		VehicleRoutingAlgorithm vra = new SchrimpfFactory().createAlgorithm(vrp);
-		
+//		vra.getAlgorithmListeners().addListener(new AlgorithmSearchProgressChartListener(pngFileName));
 		/*
 		 * Solve the problem.
 		 *