1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 | using HeuristicLab.Optimization;
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26 | using HeuristicLab.Parameters;
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27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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28 |
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29 |
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30 | namespace HeuristicLab.Encodings.ScheduleEncoding {
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31 | [Item("DirectScheduleRandomCreator", "Creator class used to create schedule encoding objects.")]
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32 | [StorableClass]
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33 | public class DirectScheduleRandomCreator : ScheduleCreator, IStochasticOperator, IDirectScheduleOperator {
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34 |
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35 | public ILookupParameter<IRandom> RandomParameter {
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36 | get { return (LookupParameter<IRandom>)Parameters["Random"]; }
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37 | }
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38 | public ILookupParameter<ItemList<Job>> JobDataParameter {
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39 | get { return (LookupParameter<ItemList<Job>>)Parameters["JobData"]; }
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40 | }
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41 |
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42 | [StorableConstructor]
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43 | protected DirectScheduleRandomCreator(bool deserializing) : base(deserializing) { }
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44 | protected DirectScheduleRandomCreator(DirectScheduleRandomCreator original, Cloner cloner)
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45 | : base(original, cloner) {
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46 | }
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47 | public override IDeepCloneable Clone(Cloner cloner) {
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48 | return new DirectScheduleRandomCreator(this, cloner);
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49 | }
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50 | public DirectScheduleRandomCreator()
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51 | : base() {
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52 | Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator."));
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53 | Parameters.Add(new LookupParameter<ItemList<Job>>("JobData", "Job data taken from the JSSP - Instance."));
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54 | }
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55 |
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56 |
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57 | public static Schedule Apply(int jobs, int resources, PWREncoding pwr, ItemList<Job> jobData) {
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58 | var resultingSchedule = new Schedule(jobData[0].Tasks.Count);
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59 | foreach (int jobNr in pwr.PermutationWithRepetition) {
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60 | int i = 0;
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61 | while (jobData[jobNr].Tasks[i].IsScheduled) i++;
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62 | Task currentTask = jobData[jobNr].Tasks[i];
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63 | double startTime = GTAlgorithmUtils.ComputeEarliestStartTime(currentTask, resultingSchedule);
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64 | currentTask.IsScheduled = true;
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65 | resultingSchedule.ScheduleTask(currentTask.ResourceNr, startTime, currentTask.Duration, currentTask.JobNr);
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66 | }
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67 | return resultingSchedule;
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68 | }
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69 |
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70 |
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71 |
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72 | protected override ISchedule CreateSolution() {
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73 | try {
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74 | var jobData = (ItemList<Job>)JobDataParameter.ActualValue.Clone();
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75 | return Apply(JobsParameter.ActualValue.Value,
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76 | ResourcesParameter.ActualValue.Value,
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77 | new PWREncoding(JobsParameter.ActualValue.Value, ResourcesParameter.ActualValue.Value, RandomParameter.ActualValue),
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78 | jobData);
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79 | }
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80 | catch {
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81 | throw new Exception("ScheduleRandomCreator needs JobData parameter from a JSSP-Instance to create Schedule-Instances!");
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82 | }
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83 | }
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84 | }
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85 | }
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