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source: branches/PersistenceReintegration/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/PickupDelivery/PDExchange/PotvinPDExchangeMoveMaker.cs @ 15018

Last change on this file since 15018 was 15018, checked in by gkronber, 7 years ago

#2520 introduced StorableConstructorFlag type for StorableConstructors

File size: 4.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Optimization;
25using HeuristicLab.Parameters;
26using HeuristicLab.Persistence;
27using HeuristicLab.Problems.VehicleRouting.Interfaces;
28using HeuristicLab.Problems.VehicleRouting.Variants;
29
30namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
31  [Item("PotvinPDExchangeMoveMaker", "Peforms the exchange move on a given PDP encoding and updates the quality.")]
32  [StorableType("6d19e79b-5887-4fdc-a1a9-dc6c1402c25c")]
33  public class PotvinPDExchangeMoveMaker : PotvinMoveMaker, IPotvinPDExchangeMoveOperator, IMoveMaker {
34    public ILookupParameter<PotvinPDExchangeMove> PDExchangeMoveParameter {
35      get { return (ILookupParameter<PotvinPDExchangeMove>)Parameters["PotvinPDExchangeMove"]; }
36    }
37
38    public override ILookupParameter VRPMoveParameter {
39      get { return PDExchangeMoveParameter; }
40    }
41
42    [StorableConstructor]
43    protected PotvinPDExchangeMoveMaker(StorableConstructorFlag deserializing) : base(deserializing) { }
44
45    public PotvinPDExchangeMoveMaker()
46      : base() {
47      Parameters.Add(new LookupParameter<PotvinPDExchangeMove>("PotvinPDExchangeMove", "The moves that should be made."));
48    }
49
50    public override IDeepCloneable Clone(Cloner cloner) {
51      return new PotvinPDExchangeMoveMaker(this, cloner);
52    }
53
54    protected PotvinPDExchangeMoveMaker(PotvinPDExchangeMoveMaker original, Cloner cloner)
55      : base(original, cloner) {
56    }
57
58    public static void Apply(PotvinEncoding solution, PotvinPDExchangeMove move, IVRPProblemInstance problemInstance) {
59      if (move.Tour >= solution.Tours.Count)
60        solution.Tours.Add(new Tour());
61      Tour tour = solution.Tours[move.Tour];
62
63      Tour oldTour = solution.Tours.Find(t => t.Stops.Contains(move.City));
64      oldTour.Stops.Remove(move.City);
65
66      if (problemInstance is IPickupAndDeliveryProblemInstance) {
67        IPickupAndDeliveryProblemInstance pdp = problemInstance as IPickupAndDeliveryProblemInstance;
68
69        int location = pdp.GetPickupDeliveryLocation(move.City);
70        Tour oldTour2 = solution.Tours.Find(t => t.Stops.Contains(location));
71        oldTour2.Stops.Remove(location);
72
73        location = pdp.GetPickupDeliveryLocation(move.Replaced);
74        oldTour2 = solution.Tours.Find(t => t.Stops.Contains(location));
75
76        oldTour2.Stops.Remove(location);
77        tour.Stops.Remove(move.Replaced);
78
79        solution.InsertPair(tour, move.City, pdp.GetPickupDeliveryLocation(move.City), problemInstance);
80        solution.InsertPair(oldTour, move.Replaced, pdp.GetPickupDeliveryLocation(move.Replaced), problemInstance);
81      } else {
82        tour.Stops.Remove(move.Replaced);
83
84        int place = solution.FindBestInsertionPlace(tour, move.City);
85        tour.Stops.Insert(place, move.City);
86
87        place = solution.FindBestInsertionPlace(oldTour, move.Replaced);
88        oldTour.Stops.Insert(place, move.Replaced);
89      }
90
91      solution.Repair();
92    }
93
94    protected override void PerformMove() {
95      PotvinPDExchangeMove move = PDExchangeMoveParameter.ActualValue;
96
97      PotvinEncoding newSolution = move.Individual.Clone() as PotvinEncoding;
98      Apply(newSolution, move, ProblemInstance);
99      VRPToursParameter.ActualValue = newSolution;
100    }
101  }
102}
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