1 | package de.ugoe.cs.autoquest.tasktrees.temporalrelation; |
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2 | |
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3 | import de.ugoe.cs.autoquest.eventcore.IEventTarget; |
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4 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTask; |
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5 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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6 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeBuilder; |
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7 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode; |
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8 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNodeFactory; |
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9 | |
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10 | /** |
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11 | * This rule subdivides long sequences into subsequences of tasks on the same event target. |
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12 | * Event targets are compared using the equals method. A more complex GUI model is ignored. |
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13 | * |
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14 | * @version $Revision: $ $Date: 18.03.2012$ |
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15 | * @author 2012, last modified by $Author: patrick$ |
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16 | */ |
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17 | class DefaultEventTargetSequenceDetectionRule implements TemporalRelationshipRule { |
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18 | |
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19 | /** |
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20 | * <p> |
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21 | * the task tree node factory to be used for creating substructures for the temporal |
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22 | * relationships identified during rule |
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23 | * </p> |
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24 | */ |
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25 | private ITaskTreeNodeFactory taskTreeNodeFactory; |
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26 | /** |
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27 | * <p> |
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28 | * the task tree builder to be used for creating substructures for the temporal relationships |
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29 | * identified during rule application |
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30 | * </p> |
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31 | */ |
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32 | private ITaskTreeBuilder taskTreeBuilder; |
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33 | |
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34 | /** |
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35 | * <p> |
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36 | * instantiates the rule with a task tree node factory and builder to be used during rule |
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37 | * application. |
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38 | * </p> |
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39 | * |
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40 | * @param taskTreeNodeFactory the task tree node factory to be used for creating substructures |
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41 | * for the temporal relationships identified during rule |
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42 | * application |
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43 | * @param taskTreeBuilder the task tree builder to be used for creating substructures for |
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44 | * the temporal relationships identified during rule application |
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45 | */ |
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46 | DefaultEventTargetSequenceDetectionRule(ITaskTreeNodeFactory taskTreeNodeFactory, |
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47 | ITaskTreeBuilder taskTreeBuilder) |
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48 | { |
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49 | this.taskTreeNodeFactory = taskTreeNodeFactory; |
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50 | this.taskTreeBuilder = taskTreeBuilder; |
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51 | } |
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52 | |
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53 | /* |
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54 | * (non-Javadoc) |
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55 | * |
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56 | * @see de.ugoe.cs.tasktree.temporalrelation.TemporalRelationshipRule#apply(TaskTreeNode, |
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57 | * boolean) |
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58 | */ |
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59 | @Override |
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60 | public RuleApplicationResult apply(ITaskTreeNode parent, boolean finalize) { |
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61 | if (!(parent instanceof ISequence)) { |
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62 | return null; |
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63 | } |
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64 | |
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65 | RuleApplicationResult result = new RuleApplicationResult(); |
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66 | |
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67 | IEventTarget currentEventTarget = null; |
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68 | int startingIndex = -1; |
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69 | |
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70 | int index = 0; |
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71 | while (index < parent.getChildren().size()) { |
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72 | ITaskTreeNode child = parent.getChildren().get(index); |
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73 | |
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74 | IEventTarget eventTarget = determineEventTarget(child); |
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75 | |
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76 | if (((eventTarget == null) && (currentEventTarget != null)) || |
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77 | ((eventTarget != null) && (!eventTarget.equals(currentEventTarget)))) |
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78 | { |
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79 | if (startingIndex < 0) { |
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80 | startingIndex = index; |
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81 | currentEventTarget = eventTarget; |
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82 | } |
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83 | else { |
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84 | int endIndex = index - 1; |
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85 | |
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86 | // only reduce to a sequence, if it is not a sequence with only one child |
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87 | // or if this child is not a sequence itself |
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88 | if ((startingIndex != endIndex) || |
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89 | (!(parent.getChildren().get(startingIndex) instanceof ISequence))) |
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90 | { |
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91 | handleEventTargetSequence |
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92 | (parent, currentEventTarget, startingIndex, endIndex, result); |
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93 | |
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94 | result.setRuleApplicationStatus |
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95 | (RuleApplicationStatus.RULE_APPLICATION_FINISHED); |
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96 | return result; |
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97 | } |
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98 | else if (eventTarget != null) { |
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99 | // here a new sequence on a new target begins |
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100 | startingIndex = index; |
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101 | currentEventTarget = eventTarget; |
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102 | } |
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103 | else { |
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104 | startingIndex = -1; |
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105 | currentEventTarget = null; |
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106 | } |
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107 | } |
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108 | } |
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109 | |
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110 | index++; |
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111 | } |
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112 | |
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113 | if (startingIndex > -1) { |
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114 | int endIndex = parent.getChildren().size() - 1; |
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115 | |
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116 | if (finalize) { |
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117 | // only reduce to a sequence, if it is not a sequence with only one child |
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118 | // or if this child is not a sequence itself |
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119 | if ((startingIndex > 0) && |
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120 | ((startingIndex != endIndex) || |
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121 | (!(parent.getChildren().get(startingIndex) instanceof ISequence)))) |
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122 | { |
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123 | handleEventTargetSequence |
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124 | (parent, currentEventTarget, startingIndex, endIndex, result); |
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125 | |
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126 | result.setRuleApplicationStatus(RuleApplicationStatus.RULE_APPLICATION_FINISHED); |
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127 | } |
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128 | } |
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129 | else { |
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130 | result.setRuleApplicationStatus(RuleApplicationStatus.RULE_APPLICATION_FEASIBLE); |
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131 | } |
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132 | } |
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133 | |
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134 | return result; |
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135 | } |
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136 | |
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137 | /** |
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138 | * |
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139 | */ |
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140 | private IEventTarget determineEventTarget(ITaskTreeNode node) { |
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141 | if (node instanceof IEventTask) { |
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142 | return ((IEventTask) node).getEventTarget(); |
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143 | } |
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144 | else { |
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145 | IEventTarget commonTarget = null; |
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146 | |
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147 | for (ITaskTreeNode child : node.getChildren()) { |
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148 | if (commonTarget == null) { |
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149 | commonTarget = determineEventTarget(child); |
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150 | } |
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151 | else { |
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152 | if (!commonTarget.equals(determineEventTarget(child))) { |
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153 | return null; |
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154 | } |
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155 | } |
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156 | } |
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157 | |
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158 | return commonTarget; |
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159 | } |
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160 | } |
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161 | |
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162 | /** |
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163 | * |
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164 | */ |
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165 | private void handleEventTargetSequence(ITaskTreeNode parent, |
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166 | IEventTarget target, |
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167 | int startIndex, |
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168 | int endIndex, |
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169 | RuleApplicationResult result) |
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170 | { |
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171 | String description = "interactions on " + target.getStringIdentifier(); |
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172 | |
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173 | ISequence sequence = RuleUtils.createNewSubSequenceInRange |
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174 | (parent, startIndex, endIndex, description, taskTreeNodeFactory, taskTreeBuilder); |
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175 | |
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176 | result.addNewlyCreatedParentNode(sequence); |
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177 | } |
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178 | |
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179 | } |
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