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source: trunk/sources/HeuristicLab.Optimization.Operators/3.3/SolutionsCreator.cs @ 4184

Last change on this file since 4184 was 4068, checked in by swagner, 14 years ago

Sorted usings and removed unused usings in entire solution (#1094)

File size: 3.5 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 HeuristicLab.Core;
23using HeuristicLab.Data;
24using HeuristicLab.Operators;
25using HeuristicLab.Parameters;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Optimization.Operators {
29  /// <summary>
30  /// An operator which creates new solutions.
31  /// </summary>
32  [Item("SolutionsCreator", "An operator which creates new solutions.")]
33  [StorableClass]
34  public sealed class SolutionsCreator : SingleSuccessorOperator {
35    public ValueLookupParameter<IntValue> NumberOfSolutionsParameter {
36      get { return (ValueLookupParameter<IntValue>)Parameters["NumberOfSolutions"]; }
37    }
38    public ValueLookupParameter<IOperator> SolutionCreatorParameter {
39      get { return (ValueLookupParameter<IOperator>)Parameters["SolutionCreator"]; }
40    }
41    public ValueLookupParameter<IOperator> EvaluatorParameter {
42      get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
43    }
44    private ScopeParameter CurrentScopeParameter {
45      get { return (ScopeParameter)Parameters["CurrentScope"]; }
46    }
47    public IScope CurrentScope {
48      get { return CurrentScopeParameter.ActualValue; }
49    }
50    public IntValue NumberOfSolutions {
51      get { return NumberOfSolutionsParameter.Value; }
52      set { NumberOfSolutionsParameter.Value = value; }
53    }
54
55    public SolutionsCreator()
56      : base() {
57      Parameters.Add(new ValueLookupParameter<IntValue>("NumberOfSolutions", "The number of solutions that should be created."));
58      Parameters.Add(new ValueLookupParameter<IOperator>("SolutionCreator", "The operator which is used to create new solutions."));
59      Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator which is used to evaluate new solutions."));
60      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope to which the new solutions are added as sub-scopes."));
61    }
62
63    public override IOperation Apply() {
64      int count = NumberOfSolutionsParameter.ActualValue.Value;
65      IOperator creator = SolutionCreatorParameter.ActualValue;
66      IOperator evaluator = EvaluatorParameter.ActualValue;
67
68      int current = CurrentScope.SubScopes.Count;
69      for (int i = 0; i < count; i++)
70        CurrentScope.SubScopes.Add(new Scope((current + i).ToString()));
71
72      OperationCollection next = new OperationCollection();
73      for (int i = 0; i < count; i++) {
74        if (creator != null) next.Add(ExecutionContext.CreateOperation(creator, CurrentScope.SubScopes[current + i]));
75        if (evaluator != null) next.Add(ExecutionContext.CreateOperation(evaluator, CurrentScope.SubScopes[current + i]));
76      }
77      next.Add(base.Apply());
78      return next;
79    }
80  }
81}
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