source: trunk/sources/HeuristicLab.Selection/3.3/Reducer.cs @ 12012

Last change on this file since 12012 was 12012, checked in by ascheibe, 5 years ago

#2212 merged r12008, r12009, r12010 back into trunk

File size: 2.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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 reduction operators.
32  /// </summary>
33  [Item("Reducer", "A base class for reduction operators.")]
34  [StorableClass]
35  public abstract class Reducer : SingleSuccessorOperator {
36    protected ScopeParameter CurrentScopeParameter {
37      get { return (ScopeParameter)Parameters["CurrentScope"]; }
38    }
39
40    public IScope CurrentScope {
41      get { return CurrentScopeParameter.ActualValue; }
42    }
43
44    [StorableConstructor]
45    protected Reducer(bool deserializing) : base(deserializing) { }
46    protected Reducer(Reducer original, Cloner cloner)
47      : base(original, cloner) {
48    }
49    protected Reducer()
50      : base() {
51      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope from which sub-scopes should be selected."));
52    }
53
54    public sealed override IOperation Apply() {
55      List<IScope> scopes = new List<IScope>(CurrentScope.SubScopes);
56      List<IScope> reduced = Reduce(scopes);
57
58      CurrentScope.SubScopes.Clear();
59      CurrentScope.SubScopes.AddRange(reduced);
60
61      return base.Apply();
62    }
63
64    protected abstract List<IScope> Reduce(List<IScope> scopes);
65  }
66}
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