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.commands.sequences;
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16 |
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17 | import java.util.Collection;
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18 | import java.util.LinkedList;
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19 | import java.util.List;
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20 |
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21 | import de.ugoe.cs.autoquest.CommandHelpers;
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22 | import de.ugoe.cs.autoquest.SequenceInstanceOf;
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23 | import de.ugoe.cs.autoquest.eventcore.Event;
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24 | import de.ugoe.cs.util.console.Command;
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25 | import de.ugoe.cs.util.console.Console;
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26 | import de.ugoe.cs.util.console.GlobalDataContainer;
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27 |
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28 | /**
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29 | * <p>
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30 | * Command to split all sequences of a collection of sequences into subsequences depending on
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31 | * the timestamps of the events. If the difference of the timestamps of two subsequent events is
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32 | * larger than the provided number of milliseconds, the sequence to which the events belong is
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33 | * split up into two subsequences between the two events.
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34 | * </p>
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35 | *
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36 | * @author Patrick Harms
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37 | * @version 1.0
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38 | */
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39 | public class CMDsplitSequences implements Command {
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40 |
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41 | /*
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42 | * (non-Javadoc)
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43 | *
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44 | * @see de.ugoe.cs.util.console.Command#run(java.util.List)
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45 | */
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46 | @SuppressWarnings("unchecked")
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47 | @Override
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48 | public void run(List<Object> parameters) {
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49 | long diff;
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50 | String sequencesName;
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51 | String newSequencesName;
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52 | try {
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53 | diff = Long.parseLong((String) parameters.get(0));
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54 | sequencesName = (String) parameters.get(1);
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55 | if (parameters.size() > 2) {
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56 | newSequencesName = (String) parameters.get(2);
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57 | }
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58 | else {
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59 | newSequencesName = sequencesName;
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60 | }
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61 | }
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62 | catch (Exception e) {
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63 | throw new IllegalArgumentException("must provide an integer for the maximum " +
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64 | "timestamp difference and a sequences name");
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65 | }
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66 |
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67 | Collection<List<Event>> sequences = null;
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68 | Object dataObject = GlobalDataContainer.getInstance().getData(sequencesName);
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69 | if (dataObject == null) {
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70 | CommandHelpers.objectNotFoundMessage(sequencesName);
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71 | return;
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72 | }
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73 | if (!SequenceInstanceOf.isCollectionOfSequences(dataObject)) {
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74 | CommandHelpers.objectNotType(sequencesName, "Collection<List<Event<?>>>");
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75 | return;
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76 | }
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77 |
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78 | sequences = (Collection<List<Event>>) dataObject;
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79 |
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80 | Collection<List<Event>> newSequences = new LinkedList<List<Event>>();
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81 |
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82 | Console.println("splitting " + sequences.size() + " sequences");
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83 | for (List<Event> sequence : sequences) {
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84 | Event previous = null;
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85 | List<Event> resultingSequence = new LinkedList<Event>();
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86 | for (Event currentEvent : sequence) {
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87 | if (currentEvent.getTimestamp() < 0) {
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88 | Console.printerrln("at least one of the events does not have a correct " +
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89 | "timestamp required for the merging of sequences and " +
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90 | "sorting of events");
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91 | }
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92 |
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93 | if ((previous != null) &&
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94 | (Math.abs(previous.getTimestamp() - currentEvent.getTimestamp()) > diff))
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95 | {
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96 | newSequences.add(resultingSequence);
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97 | resultingSequence = new LinkedList<Event>();
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98 | }
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99 |
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100 | resultingSequence.add(currentEvent);
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101 | previous = currentEvent;
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102 | }
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103 |
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104 | newSequences.add(resultingSequence);
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105 | }
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106 |
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107 | if (GlobalDataContainer.getInstance().addData(newSequencesName, newSequences)) {
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108 | CommandHelpers.dataOverwritten(newSequencesName);
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109 | }
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110 |
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111 | Console.println("sequences splitted");
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112 | }
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113 |
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114 | /*
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115 | * (non-Javadoc)
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116 | *
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117 | * @see de.ugoe.cs.util.console.Command#help()
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118 | */
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119 | @Override
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120 | public String help() {
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121 | return "splitSequences <maximumTimestampDifference> <sequencesName> {<newSequences>}";
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122 | }
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123 |
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124 | }
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