From 8010e0f2c22d10097a91e9f6b0c747a2eccd27bd Mon Sep 17 00:00:00 2001
From: oblonski <4sschroeder@gmail.com>
Date: Thu, 14 Nov 2013 10:00:43 +0100
Subject: [PATCH] add priorities to constraints

---
 .../main/java/algorithms/ConstraintManager.java | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/jsprit-core/src/main/java/algorithms/ConstraintManager.java b/jsprit-core/src/main/java/algorithms/ConstraintManager.java
index 030e2b8b..1bc7c3b9 100644
--- a/jsprit-core/src/main/java/algorithms/ConstraintManager.java
+++ b/jsprit-core/src/main/java/algorithms/ConstraintManager.java
@@ -1,10 +1,15 @@
 package algorithms;
 
 import basics.VehicleRoutingProblem;
+import basics.VehicleRoutingProblem.Constraint;
 import basics.route.TourActivity;
 
 public class ConstraintManager implements HardActivityStateLevelConstraint, HardRouteStateLevelConstraint{
 
+	public static enum Priority {
+		CRITICAL, HIGH, LOW
+	}
+	
 	private HardActivityLevelConstraintManager actLevelConstraintManager = new HardActivityLevelConstraintManager();
 	
 	private HardRouteLevelConstraintManager routeLevelConstraintManager = new HardRouteLevelConstraintManager();
@@ -24,7 +29,7 @@ public class ConstraintManager implements HardActivityStateLevelConstraint, Hard
 	
 	public void addTimeWindowConstraint(){
 		if(!timeWindowConstraintsSet){
-			addConstraint(new TimeWindowConstraint(stateManager, vrp.getTransportCosts()));
+			addConstraint(new TimeWindowConstraint(stateManager, vrp.getTransportCosts()),Priority.HIGH);
 			stateManager.addActivityVisitor(new TimeWindowUpdater(stateManager, vrp.getTransportCosts()));
 			timeWindowConstraintsSet = true;
 		}
@@ -32,8 +37,12 @@ public class ConstraintManager implements HardActivityStateLevelConstraint, Hard
 
 	public void addLoadConstraint(){
 		if(!loadConstraintsSet){
+			if(vrp.getProblemConstraints().contains(Constraint.DELIVERIES_FIRST)){
+				addConstraint(new ServiceBackhaulConstraint(),Priority.HIGH);
+			}
+			addConstraint(new PickupAndDeliverShipmentLoadActivityLevelConstraint(stateManager),Priority.CRITICAL);
 			addConstraint(new ServiceLoadRouteLevelConstraint(stateManager));
-			addConstraint(new ServiceLoadActivityLevelConstraint(stateManager));
+			addConstraint(new ServiceLoadActivityLevelConstraint(stateManager),Priority.LOW);
 			UpdateLoads updateLoads = new UpdateLoads(stateManager);
 			stateManager.addActivityVisitor(updateLoads);
 			stateManager.addListener(updateLoads);
@@ -43,8 +52,8 @@ public class ConstraintManager implements HardActivityStateLevelConstraint, Hard
 		}
 	}
 	
-	public void addConstraint(HardActivityStateLevelConstraint actLevelConstraint){
-		actLevelConstraintManager.addConstraint(actLevelConstraint);
+	public void addConstraint(HardActivityStateLevelConstraint actLevelConstraint, Priority priority){
+		actLevelConstraintManager.addConstraint(actLevelConstraint,priority);
 	}
 	
 	public void addConstraint(HardRouteStateLevelConstraint routeLevelConstraint){