| 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.Collections.Generic;
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| 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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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 | namespace HeuristicLab.Selection {
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| 30 | /// <summary>
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| 31 | /// A base class for selection operators.
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| 32 | /// </summary>
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| 33 | [Item("Selector", "A base class for selection operators.")]
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| 34 | [EmptyStorableClass]
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| 35 | public abstract class Selector : SingleSuccessorOperator {
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| 36 | protected ValueParameter<BoolData> CopySelectedParameter {
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| 37 | get { return (ValueParameter<BoolData>)Parameters["CopySelected"]; }
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| 38 | }
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| 39 | public ValueLookupParameter<IntData> NumberOfSelectedSubScopesParameter {
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| 40 | get { return (ValueLookupParameter<IntData>)Parameters["NumberOfSelectedSubScopes"]; }
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| 41 | }
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| 42 | protected ScopeParameter CurrentScopeParameter {
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| 43 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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| 44 | }
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| 45 |
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| 46 | public BoolData CopySelected {
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| 47 | get { return CopySelectedParameter.Value; }
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| 48 | set { CopySelectedParameter.Value = value; }
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| 49 | }
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| 50 | public IScope CurrentScope {
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| 51 | get { return CurrentScopeParameter.ActualValue; }
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| 52 | }
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| 53 |
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| 54 | protected Selector()
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| 55 | : base() {
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| 56 | Parameters.Add(new ValueParameter<BoolData>("CopySelected", "True if the selected sub-scopes should be copied, otherwise false.", new BoolData(false)));
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| 57 | Parameters.Add(new ValueLookupParameter<IntData>("NumberOfSelectedSubScopes", "The number of sub-scopes which should be selected."));
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| 58 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope from which sub-scopes should be selected."));
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| 59 | }
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| 60 |
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| 61 | public sealed override IExecutionSequence Apply() {
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| 62 | List<IScope> scopes = new List<IScope>(CurrentScope.SubScopes);
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| 63 | IScope[] selected = Select(scopes);
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| 64 |
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| 65 | CurrentScope.SubScopes.Clear();
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| 66 | IScope remainingScope = new Scope("Remaining");
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| 67 | remainingScope.SubScopes.AddRange(scopes);
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| 68 | CurrentScope.SubScopes.Add(remainingScope);
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| 69 | IScope selectedScope = new Scope("Selected");
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| 70 | selectedScope.SubScopes.AddRange(selected);
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| 71 | CurrentScope.SubScopes.Add(selectedScope);
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| 72 |
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| 73 | return base.Apply();
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| 74 | }
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| 75 |
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| 76 | protected abstract IScope[] Select(List<IScope> scopes);
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| 77 | }
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| 78 | }
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