1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Linq;
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25 | using HeuristicLab.Collections;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Operators;
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29 | using HeuristicLab.Optimization;
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30 | using HeuristicLab.Parameters;
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31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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32 | using HeuristicLab.Problems.VehicleRouting.Interfaces;
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33 | using HeuristicLab.Problems.VehicleRouting.Variants;
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34 |
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35 | namespace HeuristicLab.Problems.VehicleRouting.Encodings.General {
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36 | [Item("MultiVRPSolutionCreator", "Randomly selects and applies one of its creator every time it is called.")]
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37 | [StorableClass]
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38 | public class MultiVRPSolutionCreator : StochasticMultiBranch<IVRPCreator>, IVRPCreator, IGeneralVRPOperator, IMultiVRPOperator, IStochasticOperator {
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39 | public override bool CanChangeName {
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40 | get { return false; }
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41 | }
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42 | protected override bool CreateChildOperation {
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43 | get { return true; }
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44 | }
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45 |
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46 | public ILookupParameter<IVRPProblemInstance> ProblemInstanceParameter {
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47 | get { return (LookupParameter<IVRPProblemInstance>)Parameters["ProblemInstance"]; }
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48 | }
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49 |
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50 | public ILookupParameter<IVRPEncoding> VRPToursParameter {
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51 | get { return (ILookupParameter<IVRPEncoding>)Parameters["VRPTours"]; }
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52 | }
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53 |
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54 | [StorableConstructor]
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55 | protected MultiVRPSolutionCreator(bool deserializing) : base(deserializing) { }
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56 | public MultiVRPSolutionCreator()
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57 | : base() {
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58 | Parameters.Add(new LookupParameter<IVRPEncoding>("VRPTours", "The new VRP tours."));
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59 |
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60 | Parameters.Add(new LookupParameter<IVRPProblemInstance>("ProblemInstance", "The VRP problem instance"));
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61 | }
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62 |
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63 | public override IDeepCloneable Clone(Cloner cloner) {
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64 | return new MultiVRPSolutionCreator(this, cloner);
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65 | }
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66 |
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67 | protected MultiVRPSolutionCreator(MultiVRPSolutionCreator original, Cloner cloner)
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68 | : base(original, cloner) {
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69 | }
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70 |
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71 | protected override void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IVRPCreator>> e) {
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72 | base.Operators_ItemsReplaced(sender, e);
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73 | ParameterizeCreators();
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74 | }
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75 |
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76 | protected override void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IVRPCreator>> e) {
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77 | base.Operators_ItemsAdded(sender, e);
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78 | ParameterizeCreators();
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79 | }
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80 |
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81 | public void SetOperators(IEnumerable<IOperator> operators) {
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82 | foreach (IOperator op in operators) {
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83 | if (op is IVRPCreator && !(op is MultiVRPSolutionCreator)) {
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84 | Operators.Add(op.Clone() as IVRPCreator, true);
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85 | }
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86 | }
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87 | }
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88 |
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89 | private void ParameterizeCreators() {
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90 | foreach (IVRPCreator creator in Operators.OfType<IVRPCreator>()) {
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91 | creator.VRPToursParameter.ActualName = VRPToursParameter.Name;
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92 | creator.ProblemInstanceParameter.ActualName = ProblemInstanceParameter.Name;
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93 | }
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94 | foreach (IStochasticOperator creator in Operators.OfType<IStochasticOperator>()) {
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95 | creator.RandomParameter.ActualName = RandomParameter.Name;
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96 | }
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97 | }
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98 |
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99 | public override IOperation InstrumentedApply() {
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100 | if (Operators.Count == 0) throw new InvalidOperationException(Name + ": Please add at least one VRP creator to choose from.");
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101 | return base.InstrumentedApply();
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102 | }
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103 | }
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104 | }
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