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source: branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/Moves/VRPMoveMaker.cs @ 4369

Last change on this file since 4369 was 4369, checked in by svonolfe, 14 years ago

Added move operators (WIP) (#1177)

File size: 3.6 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;
23using System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using HeuristicLab.Core;
28using HeuristicLab.Optimization;
29using HeuristicLab.Data;
30using HeuristicLab.Parameters;
31using HeuristicLab.Problems.VehicleRouting.Interfaces;
32
33namespace HeuristicLab.Problems.VehicleRouting.Encodings.General {
34  [Item("VRPMoveMaker", "Performs a VRP move.")]
35  [StorableClass]
36  public abstract class VRPMoveMaker : VRPMoveOperator, IMoveMaker {
37    public ILookupParameter<DoubleValue> QualityParameter {
38      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
39    }
40    public ILookupParameter<DoubleValue> MoveQualityParameter {
41      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
42    }
43
44    [StorableConstructor]
45    protected VRPMoveMaker(bool deserializing) : base(deserializing) { }
46
47    public VRPMoveMaker()
48      : base() {
49      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the solution."));
50      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The relative quality of the move."));
51    }
52
53    protected abstract void PerformMove();
54
55    private void UpdateMoveEvaluation() {
56      IVRPEvaluator evaluator = ProblemInstance.EvaluatorParameter.Value;
57      foreach (IParameter parameter in evaluator.Parameters) {
58        if (parameter is ILookupParameter
59          && parameter != evaluator.VRPToursParameter
60          && parameter != evaluator.ProblemInstanceParameter) {
61          ILookupParameter evaluatorParameter = parameter as ILookupParameter;
62         
63          string resultName = evaluatorParameter.ActualName;
64          if (!this.Parameters.Exists(p => p.Name == resultName)) {
65            ILookupParameter resultParameter = new LookupParameter<IItem>(resultName);
66            resultParameter.ExecutionContext = ExecutionContext;
67            this.Parameters.Add(resultParameter);
68          }
69
70          string moveResultName = VRPMoveEvaluator.MovePrefix + resultName;
71          if (!this.Parameters.Exists(p => p.Name == moveResultName)) {
72            ILookupParameter moveResultParameter = new LookupParameter<IItem>(moveResultName);
73            moveResultParameter.ExecutionContext = ExecutionContext;
74            this.Parameters.Add(moveResultParameter);
75          }
76
77          ILookupParameter result = Parameters[resultName] as ILookupParameter;
78          ILookupParameter moveResult = Parameters[moveResultName] as ILookupParameter;
79          result.ActualValue = moveResult.ActualValue.Clone() as IItem;
80        }
81      }
82    }
83
84    public override IOperation Apply() {
85      PerformMove();
86      UpdateMoveEvaluation();
87     
88      return base.Apply();
89    }
90  }
91}
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