1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2011 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 System.Text;
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26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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27 | using HeuristicLab.Core;
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28 | using HeuristicLab.Optimization;
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29 | using HeuristicLab.Common;
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30 | using System.Drawing;
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31 | using HeuristicLab.Data;
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32 | using System.IO;
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33 | using HeuristicLab.Problems.Scheduling.Encodings;
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34 | using HeuristicLab.Problems.Scheduling.Evaluators;
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35 | using HeuristicLab.Parameters;
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36 | using HeuristicLab.Problems.Scheduling.Encodings.JobSequenceMatrix;
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37 | using HeuristicLab.Encodings.PermutationEncoding;
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38 | using HeuristicLab.Problems.Scheduling.Analyzers;
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39 | using HeuristicLab.PluginInfrastructure;
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40 | using HeuristicLab.Problems.Scheduling.Encodings.JobSequenceMatrix.Manipulators;
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41 | using HeuristicLab.Problems.Scheduling.Encodings.JobSequenceMatrix.Crossovers;
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42 | using HeuristicLab.Problems.Scheduling.Interfaces;
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43 |
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44 | namespace HeuristicLab.Problems.Scheduling {
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45 | [Item("JobShop Scheduling Problem", "Represents a standard JobShop Scheduling Problem")]
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46 | [Creatable("Problems")]
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47 | [StorableClass]
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48 | public sealed class JobShopSchedulingProblem : SchedulingProblem {
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49 | [StorableConstructor]
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50 | private JobShopSchedulingProblem(bool deserializing) : base(deserializing) { }
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51 | private JobShopSchedulingProblem(JobShopSchedulingProblem original, Cloner cloner)
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52 | : base(original, cloner) {
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53 | operators = original.operators.Select(x => (IOperator)cloner.Clone(x)).ToList();
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54 | }
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55 | public override IDeepCloneable Clone(Cloner cloner) {
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56 | return new JobShopSchedulingProblem(this, cloner);
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57 | }
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58 |
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59 |
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60 | #region Parameter Properties
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61 | public ValueParameter<IntValue> NrOfResourcesParameter {
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62 | get { return (ValueParameter<IntValue>)Parameters["NrOfResources"]; }
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63 | }
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64 | public ValueParameter<ItemList<JSSPJob>> JobsParameter {
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65 | get { return (ValueParameter<ItemList<JSSPJob>>)Parameters["Jobs"]; }
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66 | }
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67 | public OptionalValueParameter<JSSPEncoding> BestKnownSolutionParameter {
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68 | get { return (OptionalValueParameter<JSSPEncoding>)Parameters["BestKnownSolution"]; }
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69 | }
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70 | #endregion
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71 |
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72 | #region Properties
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73 | public IntValue NrOfResources {
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74 | get { return NrOfResourcesParameter.Value; }
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75 | set { NrOfResourcesParameter.Value = value; }
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76 | }
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77 | public ItemList<JSSPJob> Jobs {
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78 | get { return JobsParameter.Value; }
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79 | set { JobsParameter.Value = value; }
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80 | }
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81 | public JSSPEncoding BestKnownSolution {
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82 | get { return BestKnownSolutionParameter.Value; }
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83 | set { BestKnownSolutionParameter.Value = value; }
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84 | }
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85 | #endregion
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86 |
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87 |
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88 | [Storable]
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89 | private List<IOperator> operators;
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90 |
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91 |
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92 | public JobShopSchedulingProblem()
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93 | : base(new MakespanEvaluator (), new JSMRandomCreator ()) {
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94 | Parameters.Add(new ValueParameter<IntValue>("NrOfResources", "Number of Resources used in this JSSP-Instance.", new IntValue()));
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95 | Parameters.Add(new ValueParameter<ItemList<JSSPJob>>("Jobs", "Jobdata defining the precedence relationships and the duration of the tasks in this JSSP-Instance.", new ItemList<JSSPJob>()));
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96 | Parameters.Add(new OptionalValueParameter<JSSPEncoding>("BestKnownSolution", "The best known solution of this JSSP instance."));
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97 |
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98 | InitializeOperators();
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99 | }
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100 |
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101 | #region Events
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102 | //TODO: Implement event handlers for problem specific events!
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103 | #endregion
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104 |
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105 | #region Helpers
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106 | private void InitializeOperators() {
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107 | Operators.AddRange(ApplicationManager.Manager.GetInstances<IJSMOperator>());
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108 | Operators.Add(new BestSchedulingSolutionAnalyzer());
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109 | //ParameterizeAnalyzer();
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110 | //ParameterizeOperators();
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111 | }
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112 |
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113 | private void AttachEventHandlers() {
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114 | //TODO: Attach event handlers implemented aabove to appropriate events of the problem.
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115 | }
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116 |
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117 | private void ParameterizeOperators() {
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118 | throw new NotImplementedException();
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119 | }
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120 |
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121 | private void ParameterizeAnalyzer() {
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122 | throw new NotImplementedException();
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123 | }
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124 | #endregion
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125 |
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126 | #region Importmethods
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127 | private List<string> SplitString(string line) {
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128 | List<string> data = new List<string>(line.Split(' '));
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129 | List<string> result = new List<string>();
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130 |
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131 | foreach (string s in data) {
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132 | if (!String.IsNullOrEmpty(s) && s != "" && s != " ")
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133 | result.Add(s);
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134 | }
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135 |
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136 | return result;
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137 | }
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138 | public void ImportFromORLibrary(string fileName) {
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139 | if (!File.Exists(fileName))
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140 | return;
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141 | StreamReader problemFile = new StreamReader(fileName);
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142 | //assures that the parser only reads the first problem instance given in the file
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143 | bool problemFound = false;
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144 |
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145 | Jobs = new ItemList<JSSPJob>();
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146 |
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147 | while (!problemFile.EndOfStream && !problemFound) {
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148 | string line = problemFile.ReadLine();
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149 | List<string> data = SplitString(line);
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150 | int taskCount = 0;
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151 | if (data.Count > 0 && ((int)data[0][0] >= 48 && (int)data[0][0] <= 57)) {
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152 | NrOfResources = new IntValue(Int32.Parse(data[1]));
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153 | int jobCount = 0;
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154 | line = problemFile.ReadLine();
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155 | data = SplitString(line);
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156 | while (!problemFile.EndOfStream && data.Count > 0 && ((int)data[0][0] >= 48 && (int)data[0][0] <= 57)) {
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157 | JSSPJob j = new JSSPJob(new IntValue(jobCount));
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158 | for (int i = 0; i < data.Count; i++) {
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159 | JSSPTask t = new JSSPTask(new IntValue (taskCount), new IntValue(Int32.Parse(data[i])), new DoubleValue(Double.Parse(data[i + 1])), j);
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160 | taskCount++;
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161 | if (j.Tasks.Count > 0)
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162 | t.PreviousTask = j.Tasks[j.Tasks.Count - 1];
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163 | j.Tasks.Add(t);
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164 | i++;
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165 | }//for
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166 | this.Jobs.Add(j);
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167 | jobCount++;
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168 | line = problemFile.ReadLine();
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169 | data = SplitString(line);
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170 | }//while
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171 | problemFound = true;
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172 | }//if
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173 | }//while
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174 | problemFile.Close();
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175 | }
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176 | #endregion
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177 |
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178 | }
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179 | }
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