1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | |
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15 | package de.ugoe.cs.autoquest.tasktrees.temporalrelation; |
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16 | |
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17 | import java.io.FileInputStream; |
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18 | import java.io.FileOutputStream; |
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19 | import java.io.IOException; |
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20 | import java.io.ObjectInputStream; |
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21 | import java.io.ObjectOutputStream; |
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22 | import java.io.Serializable; |
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23 | import java.util.ArrayList; |
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24 | import java.util.Collections; |
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25 | import java.util.Comparator; |
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26 | import java.util.HashMap; |
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27 | import java.util.HashSet; |
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28 | import java.util.Iterator; |
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29 | import java.util.LinkedList; |
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30 | import java.util.List; |
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31 | import java.util.Map; |
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32 | import java.util.Set; |
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33 | import java.util.logging.Level; |
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34 | |
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35 | import de.ugoe.cs.autoquest.CommandHelpers; |
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36 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.Match; |
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37 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.MatchOccurence; |
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38 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.NumberSequence; |
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39 | import de.ugoe.cs.autoquest.tasktrees.alignment.matrix.PairwiseAlignmentGenerator; |
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40 | import de.ugoe.cs.autoquest.tasktrees.alignment.matrix.PairwiseAlignmentStorage; |
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41 | import de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ObjectDistanceSubstitionMatrix; |
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42 | import de.ugoe.cs.autoquest.tasktrees.taskequality.TaskEquality; |
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43 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIteration; |
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44 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIterationInstance; |
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45 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptional; |
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46 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelection; |
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47 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelectionInstance; |
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48 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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49 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequenceInstance; |
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50 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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51 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskBuilder; |
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52 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskFactory; |
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53 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
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54 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IUserSession; |
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55 | import de.ugoe.cs.autoquest.usageprofiles.SymbolMap; |
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56 | import de.ugoe.cs.util.StopWatch; |
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57 | import de.ugoe.cs.util.console.Console; |
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58 | import de.ugoe.cs.util.console.GlobalDataContainer; |
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59 | |
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60 | /** |
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61 | * <p> |
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62 | * This class implements the major rule for creating task trees based on a set |
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63 | * of recorded user sessions. For this, it first harmonizes all tasks. This |
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64 | * eases later comparison. Then it searches the sessions for iterations and |
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65 | * replaces them accordingly. Then it searches for sub sequences being the |
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66 | * longest and occurring most often. For each found sub sequence, it replaces |
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67 | * the occurrences by creating appropriate {@link ISequence}s. Afterwards, again |
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68 | * searches for iterations and then again for sub sequences until no more |
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69 | * replacements are done. |
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70 | * </p> |
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71 | * <p> |
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72 | * |
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73 | * |
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74 | * @author Patrick Harms |
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75 | */ |
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76 | public class SequenceForTaskDetectionRuleAlignment implements ISessionScopeRule { |
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77 | |
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78 | |
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79 | public static int nThreads; |
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80 | public static boolean harmonizeSequences; |
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81 | |
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82 | |
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83 | private int iteration = 0; |
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84 | /** |
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85 | * <p> |
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86 | * the task factory to be used for creating substructures for the temporal |
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87 | * relationships identified during rul application |
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88 | * </p> |
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89 | */ |
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90 | private ITaskFactory taskFactory; |
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91 | /** |
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92 | * <p> |
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93 | * the task builder to be used for creating substructures for the temporal |
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94 | * relationships identified during rule application |
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95 | * </p> |
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96 | */ |
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97 | private ITaskBuilder taskBuilder; |
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98 | |
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99 | /** |
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100 | * <p> |
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101 | * the task handling strategy to be used for comparing tasks for |
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102 | * preparation, i.e., before the tasks are harmonized |
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103 | * </p> |
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104 | */ |
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105 | private TaskHandlingStrategy preparationTaskHandlingStrategy; |
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106 | |
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107 | /** |
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108 | * <p> |
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109 | * instantiates the rule and initializes it with a task equality to be |
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110 | * considered when comparing tasks as well as a task factory and builder to |
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111 | * be used for creating task structures. |
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112 | * </p> |
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113 | * |
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114 | * @param minimalTaskEquality |
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115 | * the task equality to be considered when comparing tasks |
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116 | * @param taskFactory |
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117 | * the task factory to be used for creating substructures |
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118 | * @param taskBuilder |
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119 | * the task builder to be used for creating substructures |
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120 | */ |
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121 | |
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122 | SequenceForTaskDetectionRuleAlignment(TaskEquality minimalTaskEquality, |
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123 | ITaskFactory taskFactory, ITaskBuilder taskBuilder) { |
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124 | this.taskFactory = taskFactory; |
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125 | this.taskBuilder = taskBuilder; |
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126 | |
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127 | this.preparationTaskHandlingStrategy = new TaskHandlingStrategy( |
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128 | minimalTaskEquality); |
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129 | |
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130 | } |
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131 | |
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132 | /* |
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133 | * (non-Javadoc) |
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134 | * |
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135 | * @see java.lang.Object#toString() |
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136 | */ |
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137 | @Override |
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138 | public String toString() { |
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139 | return "SequenceForTaskDetectionRuleAlignment"; |
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140 | } |
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141 | |
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142 | /* |
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143 | * (non-Javadoc) |
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144 | * |
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145 | * @see |
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146 | * de.ugoe.cs.autoquest.tasktrees.temporalrelation.ISessionScopeRule#apply |
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147 | * (java.util.List) |
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148 | */ |
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149 | @Override |
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150 | public RuleApplicationResult apply(List<IUserSession> sessions) { |
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151 | RuleApplicationData appData = new RuleApplicationData(sessions); |
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152 | if(SequenceForTaskDetectionRuleAlignment.harmonizeSequences) { |
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153 | harmonizeEventTaskInstancesModel(appData); |
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154 | Console.traceln(Level.INFO, "generating substitution matrix from " + appData.getUniqueTasks().size() + " unique tasks"); |
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155 | appData.getSubmat().generate(appData.getUniqueTasks()); |
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156 | appData.getStopWatch().stop("substitution matrix"); |
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157 | GlobalDataContainer.getInstance().addData("appData", appData); |
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158 | //Saving intermediate results to file |
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159 | Console.traceln(Level.INFO,"saving substitution matrix to file"); |
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160 | String objectName = "appData"; |
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161 | String filename = "appData.dat"; |
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162 | Object dataObject = GlobalDataContainer.getInstance().getData( |
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163 | objectName); |
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164 | if (dataObject == null) { |
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165 | CommandHelpers.objectNotFoundMessage(objectName); |
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166 | } |
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167 | FileOutputStream fos = null; |
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168 | ObjectOutputStream out = null; |
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169 | try { |
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170 | fos = new FileOutputStream(filename); |
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171 | out = new ObjectOutputStream(fos); |
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172 | out.writeObject(dataObject); |
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173 | out.close(); |
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174 | } catch (IOException ex) { |
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175 | Console.logException(ex); |
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176 | } |
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177 | } |
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178 | else { |
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179 | Console.traceln(Level.INFO,"loading substitution matrix from file"); |
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180 | String objectName = "appData"; |
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181 | String filename = "appData.dat"; |
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182 | Object data = null; |
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183 | FileInputStream fis = null; |
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184 | ObjectInputStream in = null; |
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185 | try { |
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186 | fis = new FileInputStream(filename); |
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187 | in = new ObjectInputStream(fis); |
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188 | data = in.readObject(); |
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189 | in.close(); |
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190 | } catch (IOException ex) { |
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191 | Console.logException(ex); |
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192 | } catch (ClassNotFoundException ex) { |
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193 | Console.logException(ex); |
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194 | } |
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195 | if (GlobalDataContainer.getInstance().addData(objectName, data)) { |
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196 | CommandHelpers.dataOverwritten(objectName); |
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197 | } |
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198 | appData = (RuleApplicationData) GlobalDataContainer.getInstance().getData("appData"); |
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199 | } |
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200 | |
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201 | |
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202 | Console.traceln(Level.INFO, "Starting main loop"); |
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203 | do { |
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204 | Console.traceln(Level.INFO, "Iteration Number: " + iteration); |
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205 | iteration++; |
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206 | |
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207 | appData.detectedAndReplacedTasks = false; |
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208 | appData.getStopWatch().start("whole loop"); |
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209 | detectAndReplaceIterations(appData); |
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210 | appData.getStopWatch().start("task replacement"); |
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211 | appData.updateSubstitutionMatrix(); |
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212 | detectAndReplaceTasks(appData); // |
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213 | appData.getStopWatch().stop("task replacement"); |
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214 | appData.getStopWatch().stop("whole loop"); |
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215 | appData.getStopWatch().dumpStatistics(System.out); |
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216 | appData.getStopWatch().reset(); |
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217 | |
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218 | } while (appData.detectedAndReplacedTasks()); |
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219 | |
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220 | Console.println("created " |
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221 | + appData.getResult().getNewlyCreatedTasks().size() |
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222 | + " new tasks and " |
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223 | + appData.getResult().getNewlyCreatedTaskInstances().size() |
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224 | + " appropriate instances\n"); |
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225 | |
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226 | if ((appData.getResult().getNewlyCreatedTasks().size() > 0) |
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227 | || (appData.getResult().getNewlyCreatedTaskInstances().size() > 0)) { |
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228 | appData.getResult().setRuleApplicationStatus( |
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229 | RuleApplicationStatus.FINISHED); |
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230 | } |
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231 | |
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232 | return appData.getResult(); |
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233 | } |
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234 | |
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235 | |
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236 | private ArrayList<NumberSequence> createNumberSequences( |
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237 | RuleApplicationData appData) { |
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238 | ArrayList<NumberSequence> result = new ArrayList<NumberSequence>(); |
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239 | for (int i = 0; i < appData.getSessions().size(); i++) { |
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240 | IUserSession session = appData.getSessions().get(i); |
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241 | NumberSequence templist = new NumberSequence(session.size()); |
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242 | for (int j = 0; j < session.size(); j++) { |
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243 | ITaskInstance taskInstance = session.get(j); |
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244 | templist.getSequence()[j] = taskInstance.getTask().getId(); |
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245 | } |
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246 | // Each NumberSequence is identified by its id, beginning to count |
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247 | // at zero |
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248 | templist.setId(i); |
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249 | result.add(templist); |
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250 | } |
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251 | return result; |
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252 | } |
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253 | |
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254 | /** |
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255 | * <p> |
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256 | * harmonizes the event task instances by unifying tasks. This is done, as |
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257 | * initially the event tasks being equal with respect to the considered task |
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258 | * equality are distinct objects. The comparison of these distinct objects |
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259 | * is more time consuming than comparing the object references. |
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260 | * </p> |
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261 | * |
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262 | * @param appData |
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263 | * the rule application data combining all data used for applying |
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264 | * this rule |
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265 | * @return Returns the unique tasks symbol map |
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266 | */ |
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267 | private void harmonizeEventTaskInstancesModel(RuleApplicationData appData) { |
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268 | Console.traceln(Level.INFO, |
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269 | "harmonizing task model of event task instances"); |
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270 | appData.getStopWatch().start("harmonizing event tasks"); |
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271 | SymbolMap<ITaskInstance, ITask> uniqueTasks = preparationTaskHandlingStrategy |
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272 | .createSymbolMap(); |
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273 | |
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274 | TaskInstanceComparator comparator = preparationTaskHandlingStrategy |
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275 | .getTaskComparator(); |
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276 | |
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277 | int unifiedTasks = 0; |
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278 | ITask task; |
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279 | List<IUserSession> sessions = appData.getSessions(); |
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280 | for (int j = 0; j < sessions.size(); j++) { |
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281 | IUserSession session = sessions.get(j); |
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282 | |
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283 | for (int i = 0; i < session.size(); i++) { |
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284 | ITaskInstance taskInstance = session.get(i); |
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285 | task = uniqueTasks.getValue(taskInstance); |
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286 | |
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287 | if (task == null) { |
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288 | uniqueTasks.addSymbol(taskInstance, taskInstance.getTask()); |
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289 | appData.getUniqueTasks().add(taskInstance.getTask()); |
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290 | appData.getNumber2Task().put( |
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291 | taskInstance.getTask().getId(), |
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292 | taskInstance.getTask()); |
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293 | } else { |
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294 | taskBuilder.setTask(taskInstance, task); |
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295 | unifiedTasks++; |
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296 | } |
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297 | } |
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298 | comparator.clearBuffers(); |
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299 | } |
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300 | |
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301 | appData.getStopWatch().stop("harmonizing event tasks"); |
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302 | Console.traceln(Level.INFO, "harmonized " + unifiedTasks |
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303 | + " task occurrences (still " + appData.getUniqueTasks().size() |
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304 | + " different tasks)"); |
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305 | |
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306 | appData.getStopWatch().dumpStatistics(System.out); |
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307 | appData.getStopWatch().reset(); |
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308 | } |
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309 | |
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310 | /** |
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311 | * <p> |
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312 | * searches for direct iterations of single tasks in all sequences and |
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313 | * replaces them with {@link IIteration}s, respectively appropriate |
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314 | * instances. Also all single occurrences of a task that is iterated |
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315 | * somewhen are replaced with iterations to have again an efficient way for |
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316 | * task comparisons. |
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317 | * </p> |
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318 | * |
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319 | * @param appData |
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320 | * the rule application data combining all data used for applying |
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321 | * this rule |
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322 | */ |
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323 | private void detectAndReplaceIterations(RuleApplicationData appData) { |
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324 | Console.traceln(Level.FINE, "detecting iterations"); |
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325 | appData.getStopWatch().start("detecting iterations"); |
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326 | |
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327 | List<IUserSession> sessions = appData.getSessions(); |
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328 | |
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329 | Set<ITask> iteratedTasks = searchIteratedTasks(sessions); |
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330 | |
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331 | if (iteratedTasks.size() > 0) { |
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332 | replaceIterationsOf(iteratedTasks, sessions, appData); |
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333 | } |
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334 | |
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335 | appData.getStopWatch().stop("detecting iterations"); |
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336 | Console.traceln(Level.INFO, "replaced " + iteratedTasks.size() |
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337 | + " iterated tasks"); |
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338 | } |
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339 | |
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340 | /** |
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341 | * <p> |
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342 | * searches the provided sessions for task iterations. If a task is |
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343 | * iterated, it is added to the returned set. |
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344 | * </p> |
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345 | * |
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346 | * @param the |
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347 | * session to search for iterations in |
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348 | * |
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349 | * @return a set of tasks being iterated somewhere |
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350 | */ |
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351 | private Set<ITask> searchIteratedTasks(List<IUserSession> sessions) { |
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352 | Set<ITask> iteratedTasks = new HashSet<ITask>(); |
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353 | for (IUserSession session : sessions) { |
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354 | for (int i = 0; i < (session.size() - 1); i++) { |
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355 | // we prepared the task instances to refer to unique tasks, if |
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356 | // they are treated |
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357 | // as equal. Therefore, we just compare the identity of the |
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358 | // tasks of the task |
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359 | // instances |
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360 | if (session.get(i).getTask() == session.get(i + 1).getTask()) { |
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361 | iteratedTasks.add(session.get(i).getTask()); |
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362 | } |
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363 | } |
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364 | } |
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365 | return iteratedTasks; |
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366 | } |
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367 | |
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368 | /** |
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369 | * <p> |
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370 | * replaces all occurrences of all tasks provided in the set with iterations |
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371 | * </p> |
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372 | * |
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373 | * @param iteratedTasks |
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374 | * the tasks to be replaced with iterations |
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375 | * @param sessions |
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376 | * the sessions in which the tasks are to be replaced |
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377 | * @param appData |
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378 | * the rule application data combining all data used for applying |
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379 | * this rule |
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380 | */ |
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381 | private void replaceIterationsOf(Set<ITask> iteratedTasks, |
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382 | List<IUserSession> sessions, RuleApplicationData appData) { |
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383 | Map<ITask, IIteration> iterations = new HashMap<ITask, IIteration>(); |
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384 | Map<IIteration, List<IIterationInstance>> iterationInstances = new HashMap<IIteration, List<IIterationInstance>>(); |
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385 | |
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386 | for (ITask iteratedTask : iteratedTasks) { |
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387 | |
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388 | IIteration iteration = taskFactory.createNewIteration(); |
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389 | appData.newTaskCreated(iteration); |
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390 | iterations.put(iteratedTask, iteration); |
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391 | iterationInstances.put(iteration, |
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392 | new LinkedList<IIterationInstance>()); |
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393 | } |
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394 | |
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395 | IIterationInstance iterationInstance; |
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396 | |
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397 | for (IUserSession session : sessions) { |
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398 | int index = 0; |
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399 | iterationInstance = null; |
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400 | |
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401 | while (index < session.size()) { |
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402 | // we prepared the task instances to refer to unique tasks, if |
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403 | // they are treated |
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404 | // as equal. Therefore, we just compare the identity of the |
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405 | // tasks of the task |
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406 | // instances |
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407 | ITask currentTask = session.get(index).getTask(); |
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408 | IIteration iteration = iterations.get(currentTask); |
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409 | if (iteration != null) { |
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410 | if ((iterationInstance == null) |
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411 | || (iterationInstance.getTask() != iteration)) { |
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412 | iterationInstance = taskFactory |
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413 | .createNewTaskInstance(iteration); |
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414 | iterationInstances.get(iteration) |
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415 | .add(iterationInstance);// TODO:: Don't create |
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416 | // TaskInstances here, |
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417 | // use a set of tasks |
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418 | // instead |
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419 | taskBuilder.addTaskInstance(session, index, |
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420 | iterationInstance); |
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421 | index++; |
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422 | } |
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423 | |
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424 | taskBuilder.addChild(iterationInstance, session.get(index)); |
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425 | taskBuilder.removeTaskInstance(session, index); |
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426 | } else { |
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427 | if (iterationInstance != null) { |
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428 | iterationInstance = null; |
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429 | } |
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430 | index++; |
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431 | } |
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432 | } |
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433 | } |
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434 | |
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435 | for (Map.Entry<IIteration, List<IIterationInstance>> entry : iterationInstances |
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436 | .entrySet()) { |
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437 | harmonizeIterationInstancesModel(entry.getKey(), entry.getValue()); |
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438 | } |
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439 | } |
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440 | |
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441 | /** |
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442 | * <p> |
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443 | * TODO clarify why this is done |
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444 | * </p> |
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445 | */ |
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446 | private void harmonizeIterationInstancesModel(IIteration iteration, |
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447 | List<IIterationInstance> iterationInstances) { |
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448 | List<ITask> iteratedTaskVariants = new LinkedList<ITask>(); |
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449 | TaskInstanceComparator comparator = preparationTaskHandlingStrategy |
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450 | .getTaskComparator(); |
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451 | |
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452 | // merge the lexically different variants of iterated task to a unique |
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453 | // list |
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454 | for (IIterationInstance iterationInstance : iterationInstances) { |
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455 | for (ITaskInstance executionVariant : iterationInstance) { |
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456 | ITask candidate = executionVariant.getTask(); |
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457 | |
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458 | boolean found = false; |
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459 | for (ITask taskVariant : iteratedTaskVariants) { |
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460 | if (comparator.areLexicallyEqual(taskVariant, candidate)) { |
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461 | taskBuilder.setTask(executionVariant, taskVariant); |
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462 | found = true; |
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463 | break; |
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464 | } |
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465 | } |
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466 | |
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467 | if (!found) { |
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468 | iteratedTaskVariants.add(candidate); |
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469 | } |
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470 | } |
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471 | } |
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472 | |
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473 | // if there are more than one lexically different variant of iterated |
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474 | // tasks, adapt the |
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475 | // iteration model to be a selection of different variants. In this case |
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476 | // also adapt |
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477 | // the generated iteration instances to correctly contain selection |
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478 | // instances. If there |
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479 | // is only one variant of an iterated task, simply set this as the |
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480 | // marked task of the |
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481 | // iteration. In this case, the instances can be preserved as is |
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482 | if (iteratedTaskVariants.size() > 1) { |
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483 | ISelection selection = taskFactory.createNewSelection(); |
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484 | |
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485 | for (ITask variant : iteratedTaskVariants) { |
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486 | taskBuilder.addChild(selection, variant); |
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487 | } |
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488 | |
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489 | taskBuilder.setMarkedTask(iteration, selection); |
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490 | |
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491 | for (IIterationInstance instance : iterationInstances) { |
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492 | for (int i = 0; i < instance.size(); i++) { |
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493 | ISelectionInstance selectionInstance = taskFactory |
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494 | .createNewTaskInstance(selection); |
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495 | taskBuilder.setChild(selectionInstance, instance.get(i)); |
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496 | taskBuilder.setTaskInstance(instance, i, selectionInstance); |
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497 | } |
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498 | } |
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499 | } else { |
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500 | taskBuilder.setMarkedTask(iteration, iteratedTaskVariants.get(0)); |
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501 | } |
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502 | } |
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503 | |
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504 | /** |
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505 | * @param appData |
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506 | * @param m |
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507 | * @return |
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508 | */ |
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509 | public ISequence matchAsSequence(RuleApplicationData appData, Match m) { |
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510 | ISequence sequence = taskFactory.createNewSequence(); |
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511 | appData.newTaskCreated(sequence); |
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512 | |
---|
513 | int[] first = m.getFirstSequence().getSequence(); |
---|
514 | int[] second = m.getSecondSequence().getSequence(); |
---|
515 | |
---|
516 | // Both sequences of a match are equally long |
---|
517 | for (int i = 0; i < m.getFirstSequence().size(); i++) { |
---|
518 | |
---|
519 | // Two gaps aligned to each other: Have not seen it happening so |
---|
520 | // far, just to handle it |
---|
521 | if (first[i] == -1 && second[i] == -1) { |
---|
522 | // Do nothing here. |
---|
523 | } |
---|
524 | // Both events are equal, we can simply add the task referring to |
---|
525 | // the number |
---|
526 | else if (first[i] == second[i]) { |
---|
527 | taskBuilder.addChild(sequence, |
---|
528 | appData.getNumber2Task().get(first[i])); |
---|
529 | } |
---|
530 | // We have a gap in the first sequence, we need to add the task of |
---|
531 | // the second sequence as optional |
---|
532 | else if (first[i] == -1 && second[i] != -1) { |
---|
533 | IOptional optional = taskFactory.createNewOptional(); |
---|
534 | appData.newTaskCreated(optional); |
---|
535 | taskBuilder.setMarkedTask(optional, appData.getNumber2Task() |
---|
536 | .get(second[i])); |
---|
537 | taskBuilder.addChild(sequence, optional); |
---|
538 | } |
---|
539 | // We have a gap in the second sequence, we need to add the task of |
---|
540 | // the first sequence as optional |
---|
541 | else if (first[i] != -1 && second[i] == -1) { |
---|
542 | IOptional optional = taskFactory.createNewOptional(); |
---|
543 | appData.newTaskCreated(optional); |
---|
544 | taskBuilder.setMarkedTask(optional, appData.getNumber2Task() |
---|
545 | .get(first[i])); |
---|
546 | taskBuilder.addChild(sequence, optional); |
---|
547 | } |
---|
548 | // Both tasks are not equal, we need to insert a selection here. |
---|
549 | // Check if the next position is not a selection |
---|
550 | else if (i < first.length - 1) { |
---|
551 | |
---|
552 | if ((first[i] != second[i]) |
---|
553 | && ((first[i + 1] == second[i + 1] |
---|
554 | || first[i + 1] == -1 || second[i + 1] == -1))) { |
---|
555 | |
---|
556 | ISelection selection = taskFactory.createNewSelection(); |
---|
557 | appData.newTaskCreated(selection); |
---|
558 | taskBuilder.addChild(selection, appData.getNumber2Task() |
---|
559 | .get(first[i])); |
---|
560 | taskBuilder.addChild(selection, appData.getNumber2Task() |
---|
561 | .get(second[i])); |
---|
562 | taskBuilder.addChild(sequence, selection); |
---|
563 | } else { |
---|
564 | boolean selectionfound = true; |
---|
565 | ISelection selection = taskFactory.createNewSelection(); |
---|
566 | appData.newTaskCreated(selection); |
---|
567 | |
---|
568 | ISequence subsequence1 = taskFactory.createNewSequence(); |
---|
569 | appData.newTaskCreated(subsequence1); |
---|
570 | |
---|
571 | ISequence subsequence2 = taskFactory.createNewSequence(); |
---|
572 | appData.newTaskCreated(subsequence2); |
---|
573 | |
---|
574 | taskBuilder.addChild(selection, subsequence1); |
---|
575 | taskBuilder.addChild(selection, subsequence2); |
---|
576 | taskBuilder.addChild(sequence,selection); |
---|
577 | while (i < first.length - 1 && selectionfound) { |
---|
578 | selectionfound = false; |
---|
579 | taskBuilder.addChild(subsequence1, appData |
---|
580 | .getNumber2Task().get(first[i])); |
---|
581 | taskBuilder.addChild(subsequence2, appData |
---|
582 | .getNumber2Task().get(second[i])); |
---|
583 | if (first[i + 1] != second[i + 1] && first[i + 1] != -1 |
---|
584 | && second[i + 1] != -1) { |
---|
585 | selectionfound = true; |
---|
586 | } |
---|
587 | else{ |
---|
588 | continue; |
---|
589 | } |
---|
590 | i++; |
---|
591 | } |
---|
592 | if(i==first.length-1 && selectionfound) { |
---|
593 | taskBuilder.addChild(subsequence1, appData |
---|
594 | .getNumber2Task().get(first[i])); |
---|
595 | taskBuilder.addChild(subsequence2, appData |
---|
596 | .getNumber2Task().get(second[i])); |
---|
597 | } |
---|
598 | } |
---|
599 | } |
---|
600 | else { |
---|
601 | if ((first[i] != second[i])) { |
---|
602 | |
---|
603 | ISelection selection = taskFactory.createNewSelection(); |
---|
604 | appData.newTaskCreated(selection); |
---|
605 | taskBuilder.addChild(selection, appData.getNumber2Task() |
---|
606 | .get(first[i])); |
---|
607 | taskBuilder.addChild(selection, appData.getNumber2Task() |
---|
608 | .get(second[i])); |
---|
609 | taskBuilder.addChild(sequence, selection); |
---|
610 | } |
---|
611 | } |
---|
612 | |
---|
613 | } |
---|
614 | return sequence; |
---|
615 | } |
---|
616 | |
---|
617 | /** |
---|
618 | * |
---|
619 | * @param appData |
---|
620 | * the rule application data combining all data used for applying |
---|
621 | * this rule |
---|
622 | */ |
---|
623 | private void detectAndReplaceTasks(RuleApplicationData appData) { |
---|
624 | Console.traceln(Level.FINE, "detecting and replacing tasks"); |
---|
625 | appData.getStopWatch().start("detecting tasks"); |
---|
626 | |
---|
627 | // Create NumberSequences |
---|
628 | appData.setNumberSequences(this.createNumberSequences(appData)); |
---|
629 | |
---|
630 | // Generate pairwise alignments |
---|
631 | Console.traceln(Level.INFO, "generating pairwise alignments"); |
---|
632 | LinkedList<Match> matchseqs = new LinkedList<Match>(); |
---|
633 | PairwiseAlignmentStorage alignments = PairwiseAlignmentGenerator |
---|
634 | .generate(appData.getNumberSequences(), appData.getSubmat(), 9); |
---|
635 | |
---|
636 | // Retrieve all matches reached a specific threshold |
---|
637 | Console.traceln(Level.INFO, "retrieving significant sequence pieces"); |
---|
638 | for (int i = 0; i < appData.getNumberSequences().size(); i++) { |
---|
639 | for (int j = 0; j < appData.getNumberSequences().size(); j++) { |
---|
640 | if (i != j) { |
---|
641 | matchseqs.addAll(alignments.get(i, j).getMatches()); |
---|
642 | } |
---|
643 | } |
---|
644 | } |
---|
645 | |
---|
646 | |
---|
647 | Console.traceln(Level.INFO, "searching for patterns occuring most"); |
---|
648 | |
---|
649 | // search each match in every other sequence |
---|
650 | for (Iterator<Match> it = matchseqs.iterator(); it.hasNext();) { |
---|
651 | Match pattern = it.next(); |
---|
652 | |
---|
653 | // Skip sequences with more 0 events (scrolls) than other events. |
---|
654 | // Both of the pattern sequences are equally long, so the zero |
---|
655 | // counts just need to be smaller than the length of one sequence |
---|
656 | if (pattern.getFirstSequence().eventCount(0) |
---|
657 | + pattern.getSecondSequence().eventCount(0) + 1 > pattern |
---|
658 | .getFirstSequence().size()) |
---|
659 | continue; |
---|
660 | |
---|
661 | for (int j = 0; j < appData.getNumberSequences().size(); j++) { |
---|
662 | LinkedList<Integer> startpositions = appData |
---|
663 | .getNumberSequences().get(j).containsPattern(pattern); |
---|
664 | if (startpositions.size() > 0) { |
---|
665 | for (Iterator<Integer> jt = startpositions.iterator(); jt |
---|
666 | .hasNext();) { |
---|
667 | int start = jt.next(); |
---|
668 | pattern.addOccurence(new MatchOccurence(start, start |
---|
669 | + pattern.size(), j)); |
---|
670 | } |
---|
671 | |
---|
672 | } |
---|
673 | } |
---|
674 | } |
---|
675 | |
---|
676 | Console.traceln(Level.INFO, "sorting results"); |
---|
677 | // Sort results to get the most occurring results |
---|
678 | Comparator<Match> comparator = new Comparator<Match>() { |
---|
679 | public int compare(Match m1, Match m2) { |
---|
680 | return m2.occurenceCount() - m1.occurenceCount(); |
---|
681 | |
---|
682 | } |
---|
683 | }; |
---|
684 | Collections.sort(matchseqs, comparator); |
---|
685 | appData.getStopWatch().stop("detecting tasks"); |
---|
686 | |
---|
687 | appData.getStopWatch().start("replacing tasks"); |
---|
688 | HashMap<Integer, List<MatchOccurence>> replacedOccurences = new HashMap<Integer, List<MatchOccurence>>(); |
---|
689 | // Replace matches in the sessions |
---|
690 | for (int i = 0; i < matchseqs.size(); i++) { |
---|
691 | // Every pattern consists of 2 sequences, therefore the minimum |
---|
692 | // occurrences here is 2. |
---|
693 | // We just need the sequences also occurring in other sequences as |
---|
694 | // well |
---|
695 | if (matchseqs.get(i).occurenceCount() > 2) { |
---|
696 | |
---|
697 | appData.detectedAndReplacedTasks = true; |
---|
698 | ISequence task = matchAsSequence(appData, matchseqs.get(i)); |
---|
699 | invalidOccurence: for (Iterator<MatchOccurence> it = matchseqs |
---|
700 | .get(i).getOccurences().iterator(); it.hasNext();) { |
---|
701 | MatchOccurence oc = it.next(); |
---|
702 | |
---|
703 | /* |
---|
704 | if (iteration > 1) { |
---|
705 | |
---|
706 | System.out.println("Trying to replace sequence: "); |
---|
707 | matchseqs.get(i).getFirstSequence().printSequence(); |
---|
708 | matchseqs.get(i).getSecondSequence().printSequence(); |
---|
709 | System.out.println(" in session number: " |
---|
710 | + (oc.getSequenceId() + 1) + " at position " |
---|
711 | + (oc.getStartindex()) + "-" + oc.getEndindex()); |
---|
712 | System.out.println(); |
---|
713 | |
---|
714 | System.out.println("Printing session: "); |
---|
715 | for (int j = 0; j < appData.getSessions() |
---|
716 | .get(oc.getSequenceId()).size(); j++) { |
---|
717 | System.out.println(j |
---|
718 | + ": " |
---|
719 | + appData.getSessions().get(oc.getSequenceId()) |
---|
720 | .get(j)); |
---|
721 | } |
---|
722 | }*/ |
---|
723 | |
---|
724 | // Check if nothing has been replaced in the sequence we |
---|
725 | // want to replace |
---|
726 | if (replacedOccurences.get(oc.getSequenceId()) == null) { |
---|
727 | replacedOccurences.put(oc.getSequenceId(), |
---|
728 | new LinkedList<MatchOccurence>()); |
---|
729 | } else { |
---|
730 | // check if we have any replaced occurence with indexes |
---|
731 | // smaller than ours. If so, we need to adjust our start |
---|
732 | // and endpoints |
---|
733 | // of the replacement. |
---|
734 | // Also do a check if we have replaced this specific |
---|
735 | // MatchOccurence in this sequence already. Jump to the |
---|
736 | // next occurence if this is the case. |
---|
737 | // This is no more neccessary once the matches are |
---|
738 | // harmonized. |
---|
739 | for (Iterator<MatchOccurence> jt = replacedOccurences |
---|
740 | .get(oc.getSequenceId()).iterator(); jt |
---|
741 | .hasNext();) { |
---|
742 | MatchOccurence tmpOC = jt.next(); |
---|
743 | |
---|
744 | if (oc.getStartindex() >= tmpOC.getStartindex() |
---|
745 | && oc.getStartindex() <= tmpOC |
---|
746 | .getEndindex()) { |
---|
747 | continue invalidOccurence; |
---|
748 | } |
---|
749 | if (oc.getEndindex() >= tmpOC.getStartindex()) { |
---|
750 | continue invalidOccurence; |
---|
751 | |
---|
752 | } else if (oc.getStartindex() > tmpOC.getEndindex()) { |
---|
753 | int diff = tmpOC.getEndindex() |
---|
754 | - tmpOC.getStartindex(); |
---|
755 | // Just to be sure. |
---|
756 | if (diff > 0) { |
---|
757 | oc.setStartindex(oc.getStartindex() - diff |
---|
758 | + 1); |
---|
759 | oc.setEndindex(oc.getEndindex() - diff + 1); |
---|
760 | } else { |
---|
761 | Console.traceln(Level.WARNING, |
---|
762 | "End index of a Match before start. This should never happen"); |
---|
763 | } |
---|
764 | } |
---|
765 | } |
---|
766 | } |
---|
767 | ISequenceInstance sequenceInstances = RuleUtils |
---|
768 | .createNewSubSequenceInRange(appData.getSessions() |
---|
769 | .get(oc.getSequenceId()), oc |
---|
770 | .getStartindex(), oc.getEndindex(), task, |
---|
771 | taskFactory, taskBuilder); |
---|
772 | // Adjust the length of the match regarding to the length of |
---|
773 | // instance. (OptionalInstances may be shorter) |
---|
774 | oc.setEndindex(oc.getStartindex() |
---|
775 | + sequenceInstances.size() |
---|
776 | - RuleUtils.missedOptionals); |
---|
777 | replacedOccurences.get(oc.getSequenceId()).add(oc); |
---|
778 | } |
---|
779 | } |
---|
780 | } |
---|
781 | |
---|
782 | alignments = null; |
---|
783 | matchseqs = null; |
---|
784 | appData.getStopWatch().stop("replacing tasks"); |
---|
785 | } |
---|
786 | |
---|
787 | /** |
---|
788 | * |
---|
789 | */ |
---|
790 | private static class RuleApplicationData implements Serializable { |
---|
791 | |
---|
792 | /** |
---|
793 | * |
---|
794 | */ |
---|
795 | private static final long serialVersionUID = -7559657686755522960L; |
---|
796 | |
---|
797 | private HashMap<Integer, ITask> number2task; |
---|
798 | |
---|
799 | // TODO: We Actually just need number2task here, this structure can be removed in the future. |
---|
800 | private HashSet<ITask> uniqueTasks; |
---|
801 | |
---|
802 | ObjectDistanceSubstitionMatrix submat; |
---|
803 | |
---|
804 | |
---|
805 | private ArrayList<NumberSequence> numberseqs; |
---|
806 | |
---|
807 | private LinkedList<ITask> newTasks; |
---|
808 | |
---|
809 | /** |
---|
810 | * |
---|
811 | */ |
---|
812 | private List<IUserSession> sessions; |
---|
813 | |
---|
814 | /** |
---|
815 | * |
---|
816 | */ |
---|
817 | private boolean detectedAndReplacedTasks; |
---|
818 | |
---|
819 | /** |
---|
820 | * |
---|
821 | */ |
---|
822 | private RuleApplicationResult result; |
---|
823 | |
---|
824 | /** |
---|
825 | * |
---|
826 | */ |
---|
827 | private StopWatch stopWatch; |
---|
828 | |
---|
829 | /** |
---|
830 | * |
---|
831 | */ |
---|
832 | private RuleApplicationData(List<IUserSession> sessions) { |
---|
833 | this.sessions = sessions; |
---|
834 | numberseqs = new ArrayList<NumberSequence>(); |
---|
835 | uniqueTasks = new HashSet<ITask>(); |
---|
836 | number2task = new HashMap<Integer, ITask>(); |
---|
837 | stopWatch = new StopWatch(); |
---|
838 | result = new RuleApplicationResult(); |
---|
839 | submat= new ObjectDistanceSubstitionMatrix(6,-3,false); |
---|
840 | newTasks = new LinkedList<ITask>(); |
---|
841 | } |
---|
842 | |
---|
843 | private ObjectDistanceSubstitionMatrix getSubmat() { |
---|
844 | return submat; |
---|
845 | } |
---|
846 | |
---|
847 | private void resetNewlyCreatedTasks() { |
---|
848 | uniqueTasks.addAll(newTasks); |
---|
849 | newTasks.clear(); |
---|
850 | } |
---|
851 | |
---|
852 | private void newTaskCreated(ITask task) { |
---|
853 | number2task.put(task.getId(), task); |
---|
854 | newTasks.add(task); |
---|
855 | } |
---|
856 | |
---|
857 | /** |
---|
858 | * @return the UserSessions as List. |
---|
859 | */ |
---|
860 | private List<IUserSession> getSessions() { |
---|
861 | return sessions; |
---|
862 | } |
---|
863 | |
---|
864 | private HashSet<ITask> getUniqueTasks() { |
---|
865 | return uniqueTasks; |
---|
866 | } |
---|
867 | |
---|
868 | private void setNumberSequences(ArrayList<NumberSequence> numberseqs) { |
---|
869 | this.numberseqs = numberseqs; |
---|
870 | } |
---|
871 | |
---|
872 | private ArrayList<NumberSequence> getNumberSequences() { |
---|
873 | return numberseqs; |
---|
874 | } |
---|
875 | |
---|
876 | private void updateSubstitutionMatrix() { |
---|
877 | submat.update(getNewTasks()); |
---|
878 | resetNewlyCreatedTasks(); |
---|
879 | } |
---|
880 | |
---|
881 | |
---|
882 | /** |
---|
883 | * |
---|
884 | */ |
---|
885 | private boolean detectedAndReplacedTasks() { |
---|
886 | return detectedAndReplacedTasks; |
---|
887 | } |
---|
888 | |
---|
889 | /** |
---|
890 | * @return the result |
---|
891 | */ |
---|
892 | private RuleApplicationResult getResult() { |
---|
893 | return result; |
---|
894 | } |
---|
895 | |
---|
896 | public LinkedList<ITask> getNewTasks() { |
---|
897 | return newTasks; |
---|
898 | } |
---|
899 | |
---|
900 | /** |
---|
901 | * @return the stopWatch |
---|
902 | */ |
---|
903 | private StopWatch getStopWatch() { |
---|
904 | return stopWatch; |
---|
905 | } |
---|
906 | |
---|
907 | private HashMap<Integer, ITask> getNumber2Task() { |
---|
908 | return number2task; |
---|
909 | } |
---|
910 | |
---|
911 | } |
---|
912 | |
---|
913 | } |
---|