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source: branches/XmlReaderWriterBranch/HeuristicLab.Operators/Sorter.cs @ 125

Last change on this file since 125 was 77, checked in by swagner, 17 years ago

Fixed ticket #67

  • adapted accessing of variables in operators due to changes of variable lookup and the new name aliasing mechanism (actual/formal name translations should not be done directly anymore; instead the new method Scope.TranslateName should be used)
File size: 2.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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;
23using System.Collections.Generic;
24using System.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27
28namespace HeuristicLab.Operators {
29  public class Sorter : OperatorBase {
30    public override string Description {
31      get { return @"TODO\r\nOperator description still missing ..."; }
32    }
33
34    public Sorter()
35      : base() {
36      AddVariableInfo(new VariableInfo("Descending", "Sort in descending order", typeof(BoolData), VariableKind.In));
37      AddVariableInfo(new VariableInfo("Value", "Sorting value", typeof(DoubleData), VariableKind.In));
38    }
39
40    public override IOperation Apply(IScope scope) {
41      bool descending = GetVariableValue<BoolData>("Descending", scope, true).Data;
42      double[] keys = new double[scope.SubScopes.Count];
43      int[] sequence = new int[keys.Length];
44
45      for (int i = 0; i < keys.Length; i++) {
46        keys[i] = scope.SubScopes[i].GetVariableValue<DoubleData>("Value", false).Data;
47        sequence[i] = i;
48      }
49
50      Array.Sort<double, int>(keys, sequence);
51
52      if (descending) {
53        int temp;
54        for (int i = 0; i < sequence.Length / 2; i++) {
55          temp = sequence[i];
56          sequence[i] = sequence[sequence.Length - 1 - i];
57          sequence[sequence.Length - 1 - i] = temp;
58        }
59      }
60      scope.ReorderSubScopes(sequence);
61
62      return null;
63    }
64  }
65}
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