1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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.Data;
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26 | using HeuristicLab.Operators;
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27 | using HeuristicLab.Optimization;
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28 | using HeuristicLab.Parameters;
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29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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30 |
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31 | namespace HeuristicLab.Selection {
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32 | [Item("Replacer", "Generic replacer that replaces sub-scopes of the remaining scope with those from the selected scope.")]
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33 | [StorableClass]
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34 | public class Replacer : AlgorithmOperator, IReplacer {
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35 | public IValueLookupParameter<ISelector> ReplacedSelectorParameter {
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36 | get { return (IValueLookupParameter<ISelector>)Parameters["ReplacedSelector"]; }
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37 | }
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38 | public IValueLookupParameter<ISelector> SelectedSelectorParameter {
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39 | get { return (IValueLookupParameter<ISelector>)Parameters["SelectedSelector"]; }
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40 | }
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41 |
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42 | [StorableConstructor]
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43 | protected Replacer(bool deserializing) : base(deserializing) { }
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44 | protected Replacer(Replacer original, Cloner cloner) : base(original, cloner) { }
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45 | public override IDeepCloneable Clone(Cloner cloner) {
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46 | return new Replacer(this, cloner);
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47 | }
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48 | public Replacer() {
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49 | Parameters.Add(new ValueLookupParameter<ISelector>("ReplacedSelector", "The selection operator to select those scopes that are to be replaced."));
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50 | Parameters.Add(new ValueLookupParameter<ISelector>("SelectedSelector", "The selection operator to select those scopes that are replacing the others."));
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51 |
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52 | SubScopesProcessor ssp = new SubScopesProcessor();
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53 |
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54 | Placeholder replacedSelector = new Placeholder();
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55 | replacedSelector.OperatorParameter.ActualName = ReplacedSelectorParameter.Name;
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56 |
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57 | LeftReducer leftReducer = new LeftReducer();
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58 |
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59 | Placeholder selectedSelector = new Placeholder();
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60 | selectedSelector.OperatorParameter.ActualName = SelectedSelectorParameter.Name;
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61 |
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62 | RightReducer rightReducer = new RightReducer();
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63 |
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64 | MergingReducer merger = new MergingReducer();
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65 |
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66 | OperatorGraph.InitialOperator = ssp;
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67 | ssp.Operators.Add(replacedSelector);
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68 | ssp.Operators.Add(selectedSelector);
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69 | ssp.Successor = merger;
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70 | replacedSelector.Successor = leftReducer;
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71 | leftReducer.Successor = null;
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72 | selectedSelector.Successor = rightReducer;
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73 | rightReducer.Successor = null;
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74 | merger.Successor = null;
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75 | }
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76 |
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77 | public override IOperation Apply(IExecutionContext context) {
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78 | if (context.Scope.SubScopes.Count != 2) throw new InvalidOperationException(Name + ": There must be two sub-scopes which should be replaced/merged.");
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79 | int remaining = context.Scope.SubScopes[0].SubScopes.Count;
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80 | int selected = context.Scope.SubScopes[1].SubScopes.Count;
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81 |
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82 | ISelector replacedSelector = ReplacedSelectorParameter.ActualValue;
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83 | ISelector selectedSelector = SelectedSelectorParameter.ActualValue;
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84 |
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85 | if (replacedSelector != null) {
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86 | replacedSelector.CopySelected = new BoolValue(false);
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87 | replacedSelector.NumberOfSelectedSubScopesParameter.Value = new IntValue(Math.Min(remaining, selected));
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88 | }
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89 | if (selectedSelector != null) {
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90 | selectedSelector.CopySelected = new BoolValue(false);
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91 | selectedSelector.NumberOfSelectedSubScopesParameter.Value = new IntValue(Math.Min(remaining, selected));
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92 | }
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93 |
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94 | return base.Apply(context);
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95 | }
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96 | }
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97 | }
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