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 System.Linq;
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24 | using HeuristicLab.Common;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Operators;
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27 | using HeuristicLab.Parameters;
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28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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29 |
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30 | namespace HeuristicLab.Optimization {
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31 | [StorableClass]
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32 | public abstract class MultiEncodingOperator<T> : InstrumentedOperator, IEncodingOperator<CombinedSolution>, IMultiEncodingOperator where T : class, IOperator {
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33 | public ILookupParameter<CombinedSolution> SolutionParameter {
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34 | get { return (ILookupParameter<CombinedSolution>)Parameters["Solution"]; }
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35 | }
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36 |
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37 | public ILookupParameter<IEncoding<CombinedSolution>> EncodingParameter {
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38 | get { return (ILookupParameter<IEncoding<CombinedSolution>>)Parameters["Encoding"]; }
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39 | }
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40 |
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41 | [StorableConstructor]
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42 | protected MultiEncodingOperator(bool deserializing) : base(deserializing) { }
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43 | protected MultiEncodingOperator(MultiEncodingOperator<T> original, Cloner cloner) : base(original, cloner) { }
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44 | protected MultiEncodingOperator()
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45 | : base() {
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46 | Parameters.Add(new LookupParameter<CombinedSolution>("Solution", "The solution that gets created."));
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47 | Parameters.Add(new LookupParameter<IEncoding<CombinedSolution>>("Encoding", "The encoding."));
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48 | }
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49 |
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50 | public override IOperation InstrumentedApply() {
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51 | var operations = Parameters.Select(p => p.ActualValue).OfType<IOperator>().Select(op => ExecutionContext.CreateOperation(op));
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52 | return new OperationCollection(operations);
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53 | }
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54 |
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55 | public virtual void AddEncoding(IEncoding encoding) {
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56 | if (Parameters.ContainsKey(encoding.Name)) throw new ArgumentException(string.Format("Encoding {0} was already added.", encoding.Name));
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57 |
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58 | encoding.OperatorsChanged += Encoding_OperatorsChanged;
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59 |
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60 | var param = new ConstrainedValueParameter<T>(encoding.Name, new ItemSet<T>(encoding.Operators.OfType<T>()));
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61 | param.Value = param.ValidValues.First();
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62 | Parameters.Add(param);
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63 | }
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64 |
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65 | public virtual bool RemoveEncoding(IEncoding encoding) {
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66 | if (!Parameters.ContainsKey(encoding.Name)) throw new ArgumentException(string.Format("Encoding {0} was not added to the MultiEncoding.", encoding.Name));
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67 | encoding.OperatorsChanged -= Encoding_OperatorsChanged;
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68 | return Parameters.Remove(encoding.Name);
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69 | }
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70 |
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71 | protected IConstrainedValueParameter<T> GetParameter(IEncoding encoding) {
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72 | if (!Parameters.ContainsKey(encoding.Name)) throw new ArgumentException(string.Format("Encoding {0} was not added to the MultiEncoding.", encoding.Name));
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73 |
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74 | return (IConstrainedValueParameter<T>)Parameters[encoding.Name];
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75 | }
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76 |
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77 | private void Encoding_OperatorsChanged(object sender, EventArgs e) {
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78 | var enc = (IEncoding)sender;
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79 | var param = GetParameter(enc);
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80 |
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81 | var oldParameterValue = param.Value;
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82 | param.ValidValues.Clear();
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83 | foreach (var op in enc.Operators.OfType<T>())
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84 | param.ValidValues.Add(op);
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85 |
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86 | var newValue = param.ValidValues.FirstOrDefault(op => op.GetType() == oldParameterValue.GetType());
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87 | if (newValue == null) newValue = param.ValidValues.First();
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88 | param.Value = newValue;
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89 | }
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90 | }
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91 | }
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