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source: trunk/sources/HeuristicLab.Selection/3.3/Selector.cs @ 7259

Last change on this file since 7259 was 7259, checked in by swagner, 12 years ago

Updated year of copyrights to 2012 (#1716)

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Operators;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Selection {
30  /// <summary>
31  /// A base class for selection operators.
32  /// </summary>
33  [Item("Selector", "A base class for selection operators.")]
34  [StorableClass]
35  public abstract class Selector : SingleSuccessorOperator {
36    public override bool CanChangeName {
37      get { return false; }
38    }
39    protected ScopeParameter CurrentScopeParameter {
40      get { return (ScopeParameter)Parameters["CurrentScope"]; }
41    }
42
43    public IScope CurrentScope {
44      get { return CurrentScopeParameter.ActualValue; }
45    }
46
47    [StorableConstructor]
48    protected Selector(bool deserializing) : base(deserializing) { }
49    protected Selector(Selector original, Cloner cloner) : base(original, cloner) { }
50
51    protected Selector()
52      : base() {
53      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope from which sub-scopes should be selected."));
54    }
55
56    public sealed override IOperation Apply() {
57      List<IScope> scopes = new List<IScope>(CurrentScope.SubScopes);
58      IScope[] selected = Select(scopes);
59
60      CurrentScope.SubScopes.Clear();
61      IScope remainingScope = new Scope("Remaining");
62      remainingScope.SubScopes.AddRange(scopes);
63      CurrentScope.SubScopes.Add(remainingScope);
64      IScope selectedScope = new Scope("Selected");
65      selectedScope.SubScopes.AddRange(selected);
66      CurrentScope.SubScopes.Add(selectedScope);
67
68      return base.Apply();
69    }
70
71    protected abstract IScope[] Select(List<IScope> scopes);
72  }
73}
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