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source: trunk/sources/HeuristicLab.Operators/SingleObjectiveEvaluatorBase.cs @ 2

Last change on this file since 2 was 2, checked in by swagner, 16 years ago

Added HeuristicLab 3.0 sources from former SVN repository at revision 52

File size: 1.9 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 abstract class SingleObjectiveEvaluatorBase : OperatorBase {
30    public SingleObjectiveEvaluatorBase()
31      : base() {
32      AddVariableInfo(new VariableInfo("Quality", "Quality value", typeof(DoubleData), VariableKind.New));
33    }
34
35    public override IOperation Apply(IScope scope) {
36      double qualityValue = Evaluate(scope);
37      DoubleData quality = GetVariableValue<DoubleData>("Quality", scope, false, false);
38      if (quality == null) {
39        quality = new DoubleData(qualityValue);
40        IVariableInfo qualityInfo = GetVariableInfo("Quality");
41        if (qualityInfo.Local)
42          AddVariable(new Variable(qualityInfo.ActualName, quality));
43        else
44          scope.AddVariable(new Variable(qualityInfo.ActualName, quality));
45      } else {
46        quality.Data = qualityValue;
47      }
48      return null;
49    }
50
51    protected abstract double Evaluate(IScope scope);
52  }
53}
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