1 | package de.ugoe.cs.autoquest.plugin.usability2.rules.operator.transformer; |
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2 | |
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3 | import java.util.Iterator; |
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4 | |
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5 | import de.ugoe.cs.autoquest.plugin.usability2.rules.operator.IFilter; |
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6 | import de.ugoe.cs.autoquest.plugin.usability2.rules.operator.IResultTransformer; |
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7 | import de.ugoe.cs.autoquest.plugin.usability2.rules.results.IMatch; |
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8 | import de.ugoe.cs.autoquest.plugin.usability2.rules.results.IResult; |
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9 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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10 | |
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11 | public class UniqueResultsTransformer implements IResultTransformer { |
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12 | |
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13 | public static final IResultTransformer UNIQUE_RESULTS_TRANSFORMER = new UniqueResultsTransformer(); |
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14 | |
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15 | private UniqueResultsTransformer(){ |
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16 | super(); |
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17 | } |
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18 | |
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19 | private static class UniqueResult implements IResult { |
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20 | |
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21 | final IResult result; |
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22 | |
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23 | private UniqueResult(IResult result) { |
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24 | this.result = result; |
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25 | } |
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26 | |
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27 | /* (non-Javadoc) |
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28 | * @see java.lang.Iterable#iterator() |
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29 | */ |
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30 | @Override |
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31 | public Iterator<IMatch> iterator() { |
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32 | return new Iterator<IMatch>() { |
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33 | IMatch last = null; |
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34 | Iterator<IMatch> inner = result.iterator(); |
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35 | |
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36 | @Override |
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37 | public boolean hasNext() { |
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38 | boolean result; |
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39 | if (last == null) { |
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40 | result = inner.hasNext(); |
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41 | if(result) |
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42 | last = inner.next(); |
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43 | return result; |
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44 | } |
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45 | |
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46 | while((result = inner.hasNext())) { |
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47 | IMatch cur = inner.next(); |
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48 | if (!cur.getTask().equals(last.getTask())) { |
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49 | last = cur; |
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50 | return true; |
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51 | } |
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52 | } |
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53 | return false; |
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54 | } |
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55 | |
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56 | @Override |
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57 | public IMatch next() { |
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58 | return last; |
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59 | } |
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60 | |
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61 | @Override |
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62 | public void remove() { |
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63 | throw new UnsupportedOperationException(); |
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64 | } |
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65 | |
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66 | }; |
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67 | } |
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68 | |
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69 | /* (non-Javadoc) |
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70 | * @see de.ugoe.cs.autoquest.usability.rules.patterns.operator.IResult#isPresent() |
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71 | */ |
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72 | @Override |
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73 | public boolean isPresent() { |
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74 | return result.isPresent(); |
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75 | } |
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76 | } |
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77 | |
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78 | @Override |
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79 | public IResult transform(IResult result, IFilter filter, ITask task) { |
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80 | return new UniqueResult(result); |
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81 | } |
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82 | |
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83 | } |
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