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source: trunk/sources/HeuristicLab.Selection/3.3/Selector.cs @ 2891

Last change on this file since 2891 was 2891, checked in by swagner, 14 years ago

Operator architecture refactoring (#95)

  • worked on algorithms and parameters
File size: 3.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Collections.Generic;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Operators;
26using HeuristicLab.Optimization;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Selection {
31  /// <summary>
32  /// A base class for selection operators.
33  /// </summary>
34  [Item("Selector", "A base class for selection operators.")]
35  [EmptyStorableClass]
36  public abstract class Selector : SingleSuccessorOperator, ISelector {
37    protected ValueParameter<BoolData> CopySelectedParameter {
38      get { return (ValueParameter<BoolData>)Parameters["CopySelected"]; }
39    }
40    public IValueLookupParameter<IntData> NumberOfSelectedSubScopesParameter {
41      get { return (ValueLookupParameter<IntData>)Parameters["NumberOfSelectedSubScopes"]; }
42    }
43    protected ScopeParameter CurrentScopeParameter {
44      get { return (ScopeParameter)Parameters["CurrentScope"]; }
45    }
46
47    public BoolData CopySelected {
48      get { return CopySelectedParameter.Value; }
49      set { CopySelectedParameter.Value = value; }
50    }
51    public IScope CurrentScope {
52      get { return CurrentScopeParameter.ActualValue; }
53    }
54
55    protected Selector()
56      : base() {
57      Parameters.Add(new ValueParameter<BoolData>("CopySelected", "True if the selected sub-scopes should be copied, otherwise false.", new BoolData(false)));
58      Parameters.Add(new ValueLookupParameter<IntData>("NumberOfSelectedSubScopes", "The number of sub-scopes which should be selected."));
59      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope from which sub-scopes should be selected."));
60    }
61
62    public sealed override IOperation Apply() {
63      List<IScope> scopes = new List<IScope>(CurrentScope.SubScopes);
64      IScope[] selected = Select(scopes);
65
66      CurrentScope.SubScopes.Clear();
67      IScope remainingScope = new Scope("Remaining");
68      remainingScope.SubScopes.AddRange(scopes);
69      CurrentScope.SubScopes.Add(remainingScope);
70      IScope selectedScope = new Scope("Selected");
71      selectedScope.SubScopes.AddRange(selected);
72      CurrentScope.SubScopes.Add(selectedScope);
73
74      return base.Apply();
75    }
76
77    protected abstract IScope[] Select(List<IScope> scopes);
78  }
79}
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