1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 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.Common;
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26 | using HeuristicLab.Core;
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27 | using HeuristicLab.Data;
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28 | using HeuristicLab.Optimization;
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29 | using HeuristicLab.Parameters;
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30 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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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 | [StorableClass]
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36 | public sealed class PermutationEncoding : Encoding<Permutation> {
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37 | #region encoding parameters
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38 | [Storable]
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39 | private IFixedValueParameter<IntValue> lengthParameter;
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40 | public IFixedValueParameter<IntValue> LengthParameter {
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41 | get { return lengthParameter; }
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42 | set {
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43 | if (value == null) throw new ArgumentNullException("Length parameter must not be null.");
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44 | if (value.Value == null) throw new ArgumentNullException("Length parameter value must not be null.");
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45 | if (lengthParameter == value) return;
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46 |
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47 | if (lengthParameter != null) Parameters.Remove(lengthParameter);
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48 | lengthParameter = value;
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49 | Parameters.Add(lengthParameter);
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50 | OnLengthParameterChanged();
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51 | }
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52 | }
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53 |
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54 | [Storable]
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55 | private IFixedValueParameter<PermutationType> permutationTypeParameter;
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56 | public IFixedValueParameter<PermutationType> PermutationTypeParameter {
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57 | get { return permutationTypeParameter; }
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58 | set {
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59 | if (value == null) throw new ArgumentNullException("Permutation type parameter must not be null.");
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60 | if (value.Value == null) throw new ArgumentNullException("Permutation type parameter value must not be null.");
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61 | if (permutationTypeParameter == value) return;
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62 |
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63 | if (permutationTypeParameter != null) Parameters.Remove(permutationTypeParameter);
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64 | permutationTypeParameter = value;
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65 | Parameters.Add(permutationTypeParameter);
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66 | OnPermutationTypeParameterChanged();
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67 | }
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68 | }
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69 | #endregion
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70 |
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71 | public int Length {
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72 | get { return LengthParameter.Value.Value; }
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73 | set { LengthParameter.Value.Value = value; }
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74 | }
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75 |
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76 | public PermutationTypes Type {
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77 | get { return PermutationTypeParameter.Value.Value; }
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78 | set { PermutationTypeParameter.Value.Value = value; }
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79 | }
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80 |
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81 | [StorableConstructor]
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82 | private PermutationEncoding(bool deserializing) : base(deserializing) { }
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83 | [StorableHook(HookType.AfterDeserialization)]
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84 | private void AfterDeserialization() {
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85 | RegisterParameterEvents();
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86 | DiscoverOperators();
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87 | }
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88 |
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89 | public override IDeepCloneable Clone(Cloner cloner) { return new PermutationEncoding(this, cloner); }
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90 | private PermutationEncoding(PermutationEncoding original, Cloner cloner)
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91 | : base(original, cloner) {
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92 | lengthParameter = cloner.Clone(original.lengthParameter);
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93 | permutationTypeParameter = cloner.Clone(original.permutationTypeParameter);
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94 | RegisterParameterEvents();
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95 | }
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96 |
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97 |
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98 | public PermutationEncoding() : this("Permutation", 10, PermutationTypes.Absolute) { }
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99 | public PermutationEncoding(string name) : this(name, 10, PermutationTypes.Absolute) { }
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100 | public PermutationEncoding(int length) : this("Permutation", length, PermutationTypes.Absolute) { }
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101 | public PermutationEncoding(string name, int length, PermutationTypes type)
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102 | : base(name) {
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103 | lengthParameter = new FixedValueParameter<IntValue>(Name + ".Length", new IntValue(length));
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104 | permutationTypeParameter = new FixedValueParameter<PermutationType>(Name + ".Type", new PermutationType(type));
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105 | Parameters.Add(lengthParameter);
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106 | Parameters.Add(permutationTypeParameter);
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107 |
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108 | SolutionCreator = new RandomPermutationCreator();
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109 | RegisterParameterEvents();
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110 | DiscoverOperators();
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111 | }
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112 |
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113 | private void OnLengthParameterChanged() {
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114 | RegisterLengthParameterEvents();
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115 | ConfigureOperators(Operators);
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116 | }
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117 |
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118 | private void OnPermutationTypeParameterChanged() {
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119 | RegisterPermutationTypeParameterEvents();
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120 | ConfigureOperators(Operators);
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121 | }
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122 |
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123 | private void RegisterParameterEvents() {
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124 | RegisterLengthParameterEvents();
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125 | RegisterPermutationTypeParameterEvents();
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126 | }
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127 | private void RegisterLengthParameterEvents() {
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128 | LengthParameter.Value.ValueChanged += (o, s) => ConfigureOperators(Operators);
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129 | }
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130 | private void RegisterPermutationTypeParameterEvents() {
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131 | PermutationTypeParameter.Value.ValueChanged += (o, s) => ConfigureOperators(Operators);
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132 | }
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133 |
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134 | #region Operator Discovery
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135 | private static readonly IEnumerable<Type> encodingSpecificOperatorTypes;
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136 | static PermutationEncoding() {
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137 | encodingSpecificOperatorTypes = new List<Type>() {
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138 | typeof (IPermutationOperator),
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139 | typeof (IPermutationCreator),
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140 | typeof (IPermutationCrossover),
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141 | typeof (IPermutationManipulator),
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142 | typeof (IPermutationMultiNeighborhoodShakingOperator),
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143 | typeof (IPermutationMoveOperator),
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144 | typeof (IPermutationInversionMoveOperator),
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145 | typeof (IPermutationScrambleMoveOperator),
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146 | typeof (IPermutationSwap2MoveOperator),
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147 | typeof (IPermutationTranslocationMoveOperator),
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148 | typeof (IPermutationLocalImprovementOperator),
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149 | typeof (IPermutationSolutionOperator),
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150 | typeof (IPermutationSolutionsOperator),
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151 | };
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152 | }
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153 | private void DiscoverOperators() {
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154 | var assembly = typeof(IPermutationOperator).Assembly;
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155 | var discoveredTypes = ApplicationManager.Manager.GetTypes(encodingSpecificOperatorTypes, assembly, true, false, false);
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156 | var operators = discoveredTypes.Select(t => (IOperator)Activator.CreateInstance(t));
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157 | var newOperators = operators.Except(Operators, new TypeEqualityComparer<IOperator>()).ToList();
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158 |
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159 | ConfigureOperators(newOperators);
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160 | foreach (var @operator in newOperators)
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161 | AddOperator(@operator);
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162 | }
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163 | #endregion
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164 |
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165 | public override void ConfigureOperators(IEnumerable<IItem> operators) {
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166 | ConfigureCreators(operators.OfType<IPermutationCreator>());
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167 | ConfigureCrossovers(operators.OfType<IPermutationCrossover>());
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168 | ConfigureManipulators(operators.OfType<IPermutationManipulator>());
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169 | ConfigureShakingOperators(operators.OfType<IPermutationMultiNeighborhoodShakingOperator>());
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170 | ConfigureMoveOperators(operators.OfType<IPermutationMoveOperator>());
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171 | ConfigureInversionMoveOperators(operators.OfType<IPermutationInversionMoveOperator>());
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172 | ConfigureScrambleMoveOperators(operators.OfType<IPermutationScrambleMoveOperator>());
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173 | ConfigureSwap2MoveOperators(operators.OfType<IPermutationSwap2MoveOperator>());
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174 | ConfigureTranslocationMoveOperators(operators.OfType<IPermutationTranslocationMoveOperator>());
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175 | ConfigureLocalImprovementOperators(operators.OfType<IPermutationLocalImprovementOperator>());
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176 | ConfigureSolutionOperators(operators.OfType<IPermutationSolutionOperator>());
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177 | ConfigureSolutionsOperators(operators.OfType<IPermutationSolutionsOperator>());
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178 | }
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179 |
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180 | #region specific operator wiring
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181 | private void ConfigureCreators(IEnumerable<IPermutationCreator> creators) {
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182 | foreach (var creator in creators) {
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183 | creator.LengthParameter.ActualName = LengthParameter.Name;
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184 | creator.PermutationTypeParameter.Value.Value = Type;
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185 | }
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186 | }
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187 | private void ConfigureCrossovers(IEnumerable<IPermutationCrossover> crossovers) {
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188 | foreach (var crossover in crossovers) {
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189 | crossover.ChildParameter.ActualName = Name;
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190 | crossover.ParentsParameter.ActualName = Name;
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191 | }
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192 | }
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193 | private void ConfigureManipulators(IEnumerable<IPermutationManipulator> manipulators) {
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194 | // IPermutationManipulator does not contain additional parameters (already contained in IPermutationSolutionOperator)
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195 | }
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196 | private void ConfigureShakingOperators(IEnumerable<IPermutationMultiNeighborhoodShakingOperator> shakingOperators) {
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197 | foreach (var shakingOperator in shakingOperators) {
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198 | shakingOperator.PermutationParameter.ActualName = Name;
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199 | }
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200 | }
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201 | private void ConfigureMoveOperators(IEnumerable<IPermutationMoveOperator> moveOperators) {
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202 | foreach (var moveOperator in moveOperators) {
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203 | moveOperator.PermutationParameter.ActualName = Name;
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204 | }
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205 | }
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206 | private void ConfigureInversionMoveOperators(IEnumerable<IPermutationInversionMoveOperator> inversionMoveOperators) {
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207 | foreach (var inversionMoveOperator in inversionMoveOperators) {
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208 | inversionMoveOperator.InversionMoveParameter.ActualName = Name + ".InversionMove";
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209 | }
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210 | }
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211 | private void ConfigureScrambleMoveOperators(IEnumerable<IPermutationScrambleMoveOperator> scrambleMoveOperators) {
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212 | foreach (var scrambleMoveOperator in scrambleMoveOperators) {
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213 | scrambleMoveOperator.ScrambleMoveParameter.ActualName = Name + ".ScrambleMove";
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214 | }
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215 | }
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216 | private void ConfigureSwap2MoveOperators(IEnumerable<IPermutationSwap2MoveOperator> swap2MoveOperators) {
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217 | foreach (var swap2MoveOperator in swap2MoveOperators) {
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218 | swap2MoveOperator.Swap2MoveParameter.ActualName = Name + ".Swap2Move";
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219 | }
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220 | }
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221 | private void ConfigureTranslocationMoveOperators(IEnumerable<IPermutationTranslocationMoveOperator> translocationMoveOperators) {
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222 | foreach (var translocationMoveOperator in translocationMoveOperators) {
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223 | translocationMoveOperator.TranslocationMoveParameter.ActualName = Name + ".TranslocationMove";
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224 | }
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225 | }
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226 | private void ConfigureLocalImprovementOperators(IEnumerable<IPermutationLocalImprovementOperator> localImprovementOperators) {
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227 | // IPermutationLocalImprovementOperator does not contain additional parameters (already contained in IPermutationSolutionOperator)
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228 | }
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229 | private void ConfigureSolutionOperators(IEnumerable<IPermutationSolutionOperator> solutionOperators) {
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230 | foreach (var solutionOperator in solutionOperators) {
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231 | solutionOperator.PermutationParameter.ActualName = Name;
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232 | }
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233 | }
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234 | private void ConfigureSolutionsOperators(IEnumerable<IPermutationSolutionsOperator> solutionsOperators) {
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235 | foreach (var solutionsOperator in solutionsOperators) {
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236 | solutionsOperator.PermutationsParameter.ActualName = Name;
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237 | }
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238 | }
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239 | #endregion
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240 | }
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241 | }
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