1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 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 HEAL.Attic;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Data;
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29 | using HeuristicLab.Optimization;
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30 | using HeuristicLab.Parameters;
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31 | using HeuristicLab.PluginInfrastructure;
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32 |
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33 | namespace HeuristicLab.Encodings.PermutationEncoding {
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34 | [Item("PermutationEncoding", "Describes a permutation encoding.")]
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35 | [StorableType("E30E7507-44BA-4021-8F56-C3FC5569A6FE")]
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36 | public sealed class PermutationEncoding : VectorEncoding {
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37 | #region encoding parameters
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38 | [Storable] public IValueParameter<EnumValue<PermutationTypes>> PermutationTypeParameter { get; private set; }
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39 | public PermutationTypes Type {
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40 | get { return PermutationTypeParameter.Value.Value; }
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41 | set {
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42 | if (Type == value) return;
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43 | PermutationTypeParameter.Value.Value = value;
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44 | }
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45 | }
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46 | #endregion
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47 |
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48 | [StorableConstructor]
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49 | private PermutationEncoding(StorableConstructorFlag _) : base(_) { }
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50 | [StorableHook(HookType.AfterDeserialization)]
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51 | private void AfterDeserialization() {
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52 | DiscoverOperators();
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53 | RegisterParameterEvents();
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54 | }
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55 |
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56 | public override IDeepCloneable Clone(Cloner cloner) { return new PermutationEncoding(this, cloner); }
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57 | private PermutationEncoding(PermutationEncoding original, Cloner cloner)
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58 | : base(original, cloner) {
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59 | PermutationTypeParameter = cloner.Clone(original.PermutationTypeParameter);
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60 | RegisterParameterEvents();
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61 | }
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62 |
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63 |
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64 | public PermutationEncoding() : this("Permutation", 10, PermutationTypes.Absolute) { }
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65 | public PermutationEncoding(string name) : this(name, 10, PermutationTypes.Absolute) { }
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66 | public PermutationEncoding(int length) : this("Permutation", length, PermutationTypes.Absolute) { }
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67 | public PermutationEncoding(string name, int length, PermutationTypes type)
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68 | : base(name, length) {
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69 | PermutationTypeParameter = new ValueParameter<EnumValue<PermutationTypes>>(Name + ".Type", new EnumValue<PermutationTypes>(type));
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70 | Parameters.Add(PermutationTypeParameter);
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71 |
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72 | DiscoverOperators();
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73 | RegisterParameterEvents();
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74 | }
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75 |
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76 | private void RegisterParameterEvents() {
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77 | EnumValueParameterChangeHandler<PermutationTypes>.Create(PermutationTypeParameter, () => {
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78 | ConfigureOperators(Operators);
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79 | OnTypeChanged();
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80 | });
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81 | }
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82 |
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83 | #region Operator Discovery
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84 | private static readonly IEnumerable<Type> encodingSpecificOperatorTypes;
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85 | static PermutationEncoding() {
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86 | encodingSpecificOperatorTypes = new List<Type>() {
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87 | typeof (IPermutationOperator),
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88 | typeof (IPermutationCreator),
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89 | typeof (IPermutationCrossover),
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90 | typeof (IPermutationManipulator),
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91 | typeof (IPermutationMultiNeighborhoodShakingOperator),
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92 | typeof (IPermutationMoveOperator),
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93 | typeof (IPermutationInversionMoveOperator),
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94 | typeof (IPermutationScrambleMoveOperator),
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95 | typeof (IPermutationSwap2MoveOperator),
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96 | typeof (IPermutationTranslocationMoveOperator),
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97 | typeof (IPermutationLocalImprovementOperator),
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98 | typeof (IPermutationSolutionOperator),
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99 | typeof (IPermutationSolutionsOperator),
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100 | };
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101 | }
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102 | private void DiscoverOperators() {
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103 | var assembly = typeof(IPermutationOperator).Assembly;
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104 | var discoveredTypes = ApplicationManager.Manager.GetTypes(encodingSpecificOperatorTypes, assembly, true, false, false);
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105 | var operators = discoveredTypes.Select(t => (IOperator)Activator.CreateInstance(t));
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106 | var newOperators = operators.Except(Operators, new TypeEqualityComparer<IOperator>()).ToList();
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107 |
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108 | ConfigureOperators(newOperators);
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109 | foreach (var @operator in newOperators)
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110 | AddOperator(@operator);
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111 | }
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112 | #endregion
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113 |
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114 | public override void ConfigureOperators(IEnumerable<IItem> operators) {
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115 | base.ConfigureOperators(operators);
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116 | ConfigureCreators(operators.OfType<IPermutationCreator>());
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117 | ConfigureCrossovers(operators.OfType<IPermutationCrossover>());
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118 | ConfigureManipulators(operators.OfType<IPermutationManipulator>());
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119 | ConfigureShakingOperators(operators.OfType<IPermutationMultiNeighborhoodShakingOperator>());
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120 | ConfigureMoveOperators(operators.OfType<IPermutationMoveOperator>());
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121 | ConfigureInversionMoveOperators(operators.OfType<IPermutationInversionMoveOperator>());
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122 | ConfigureScrambleMoveOperators(operators.OfType<IPermutationScrambleMoveOperator>());
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123 | ConfigureSwap2MoveOperators(operators.OfType<IPermutationSwap2MoveOperator>());
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124 | ConfigureTranslocationMoveOperators(operators.OfType<IPermutationTranslocationMoveOperator>());
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125 | ConfigureLocalImprovementOperators(operators.OfType<IPermutationLocalImprovementOperator>());
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126 | ConfigureSolutionOperators(operators.OfType<IPermutationSolutionOperator>());
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127 | ConfigureSolutionsOperators(operators.OfType<IPermutationSolutionsOperator>());
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128 | }
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129 |
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130 | #region specific operator wiring
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131 | private void ConfigureCreators(IEnumerable<IPermutationCreator> creators) {
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132 | foreach (var creator in creators) {
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133 | creator.LengthParameter.ActualName = LengthParameter.Name;
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134 | creator.PermutationTypeParameter.Value.Value = Type;
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135 | }
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136 | }
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137 | private void ConfigureCrossovers(IEnumerable<IPermutationCrossover> crossovers) {
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138 | foreach (var crossover in crossovers) {
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139 | crossover.ChildParameter.ActualName = Name;
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140 | crossover.ParentsParameter.ActualName = Name;
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141 | }
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142 | }
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143 | private void ConfigureManipulators(IEnumerable<IPermutationManipulator> manipulators) {
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144 | // IPermutationManipulator does not contain additional parameters (already contained in IPermutationSolutionOperator)
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145 | }
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146 | private void ConfigureShakingOperators(IEnumerable<IPermutationMultiNeighborhoodShakingOperator> shakingOperators) {
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147 | foreach (var shakingOperator in shakingOperators) {
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148 | shakingOperator.PermutationParameter.ActualName = Name;
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149 | }
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150 | }
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151 | private void ConfigureMoveOperators(IEnumerable<IPermutationMoveOperator> moveOperators) {
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152 | foreach (var moveOperator in moveOperators) {
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153 | moveOperator.PermutationParameter.ActualName = Name;
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154 | }
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155 | }
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156 | private void ConfigureInversionMoveOperators(IEnumerable<IPermutationInversionMoveOperator> inversionMoveOperators) {
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157 | foreach (var inversionMoveOperator in inversionMoveOperators) {
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158 | inversionMoveOperator.InversionMoveParameter.ActualName = Name + ".InversionMove";
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159 | }
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160 | }
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161 | private void ConfigureScrambleMoveOperators(IEnumerable<IPermutationScrambleMoveOperator> scrambleMoveOperators) {
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162 | foreach (var scrambleMoveOperator in scrambleMoveOperators) {
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163 | scrambleMoveOperator.ScrambleMoveParameter.ActualName = Name + ".ScrambleMove";
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164 | }
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165 | }
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166 | private void ConfigureSwap2MoveOperators(IEnumerable<IPermutationSwap2MoveOperator> swap2MoveOperators) {
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167 | foreach (var swap2MoveOperator in swap2MoveOperators) {
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168 | swap2MoveOperator.Swap2MoveParameter.ActualName = Name + ".Swap2Move";
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169 | }
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170 | }
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171 | private void ConfigureTranslocationMoveOperators(IEnumerable<IPermutationTranslocationMoveOperator> translocationMoveOperators) {
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172 | foreach (var translocationMoveOperator in translocationMoveOperators) {
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173 | translocationMoveOperator.TranslocationMoveParameter.ActualName = Name + ".TranslocationMove";
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174 | }
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175 | }
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176 | private void ConfigureLocalImprovementOperators(IEnumerable<IPermutationLocalImprovementOperator> localImprovementOperators) {
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177 | // IPermutationLocalImprovementOperator does not contain additional parameters (already contained in IPermutationSolutionOperator)
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178 | }
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179 | private void ConfigureSolutionOperators(IEnumerable<IPermutationSolutionOperator> solutionOperators) {
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180 | foreach (var solutionOperator in solutionOperators) {
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181 | solutionOperator.PermutationParameter.ActualName = Name;
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182 | }
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183 | }
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184 | private void ConfigureSolutionsOperators(IEnumerable<IPermutationSolutionsOperator> solutionsOperators) {
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185 | foreach (var solutionsOperator in solutionsOperators) {
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186 | solutionsOperator.PermutationsParameter.ActualName = Name;
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187 | }
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188 | }
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189 | #endregion
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190 |
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191 | public event EventHandler TypeChanged;
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192 | private void OnTypeChanged() {
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193 | TypeChanged?.Invoke(this, EventArgs.Empty);
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194 | }
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195 | }
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196 | }
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