source: trunk/sources/HeuristicLab.Problems.Scheduling/3.3/Decoders/PWRDecoder.cs @ 12012

Last change on this file since 12012 was 12012, checked in by ascheibe, 6 years ago

#2212 merged r12008, r12009, r12010 back into trunk

File size: 3.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Encodings.ScheduleEncoding;
26using HeuristicLab.Encodings.ScheduleEncoding.PermutationWithRepetition;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30
31namespace HeuristicLab.Problems.Scheduling {
32  [Item("PWRDecoder", "An item used to convert a PWR-individual into a generalized schedule.")]
33  [StorableClass]
34  public class PWRDecoder : ScheduleDecoder, IStochasticOperator, IJSSPOperator {
35
36    public ILookupParameter<IRandom> RandomParameter {
37      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
38    }
39    public ILookupParameter<ItemList<Job>> JobDataParameter {
40      get { return (LookupParameter<ItemList<Job>>)Parameters["JobData"]; }
41    }
42
43    [StorableConstructor]
44    protected PWRDecoder(bool deserializing) : base(deserializing) { }
45    protected PWRDecoder(PWRDecoder original, Cloner cloner) : base(original, cloner) { }
46    public PWRDecoder()
47      : base() {
48      Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator which should be used for stochastic manipulation operators."));
49      Parameters.Add(new LookupParameter<ItemList<Job>>("JobData", "Job data taken from the JSSP - Instance."));
50      ScheduleEncodingParameter.ActualName = "PermutationWithRepetition";
51    }
52
53    public override IDeepCloneable Clone(Cloner cloner) {
54      return new PWRDecoder(this, cloner);
55    }
56
57    public override Schedule CreateScheduleFromEncoding(IScheduleEncoding encoding) {
58      var solution = encoding as PWREncoding;
59      if (solution == null) throw new InvalidOperationException("Encoding is not of type PWREncoding");
60
61      var jobs = (ItemList<Job>)JobDataParameter.ActualValue.Clone();
62      var resultingSchedule = new Schedule(jobs[0].Tasks.Count);
63      foreach (int jobNr in solution.PermutationWithRepetition) {
64        int i = 0;
65        while (jobs[jobNr].Tasks[i].IsScheduled) i++;
66        Task currentTask = jobs[jobNr].Tasks[i];
67        double startTime = GTAlgorithmUtils.ComputeEarliestStartTime(currentTask, resultingSchedule);
68        currentTask.IsScheduled = true;
69        resultingSchedule.ScheduleTask(currentTask.ResourceNr, startTime, currentTask.Duration, currentTask.JobNr);
70      }
71      return resultingSchedule;
72    }
73  }
74}
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