[2830] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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| 26 | using HeuristicLab.Parameters;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 |
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| 29 | namespace HeuristicLab.Evolutionary {
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| 30 | /// <summary>
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| 31 | /// An operator which creates a new population of solutions.
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| 32 | /// </summary>
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| 33 | [Item("PopulationCreator", "An operator which creates a new population of solutions.")]
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[3017] | 34 | [StorableClass]
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[2830] | 35 | [Creatable("Test")]
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| 36 | public sealed class PopulationCreator : SingleSuccessorOperator {
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| 37 | public ValueLookupParameter<IntData> PopulationSizeParameter {
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| 38 | get { return (ValueLookupParameter<IntData>)Parameters["PopulationSize"]; }
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| 39 | }
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| 40 | public ValueLookupParameter<IOperator> SolutionCreatorParameter {
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| 41 | get { return (ValueLookupParameter<IOperator>)Parameters["SolutionCreator"]; }
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| 42 | }
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[2882] | 43 | public ValueLookupParameter<IOperator> EvaluatorParameter {
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| 44 | get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
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[2830] | 45 | }
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| 46 | private ScopeParameter CurrentScopeParameter {
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| 47 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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| 48 | }
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| 49 | public IScope CurrentScope {
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| 50 | get { return CurrentScopeParameter.ActualValue; }
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| 51 | }
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| 52 |
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| 53 | public PopulationCreator()
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| 54 | : base() {
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| 55 | Parameters.Add(new ValueLookupParameter<IntData>("PopulationSize", "The number of individuals that should be created."));
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| 56 | Parameters.Add(new ValueLookupParameter<IOperator>("SolutionCreator", "The operator which is used to create new solutions."));
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[2882] | 57 | Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator which is used to evaluate new solutions."));
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[2830] | 58 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope which represents the population."));
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| 59 | }
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| 60 |
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[2834] | 61 | public override IOperation Apply() {
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[2830] | 62 | int size = PopulationSizeParameter.ActualValue.Value;
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| 63 | IOperator creator = SolutionCreatorParameter.ActualValue;
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[2882] | 64 | IOperator evaluator = EvaluatorParameter.ActualValue;
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[2830] | 65 |
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| 66 | if (CurrentScope.SubScopes.Count > 0) throw new InvalidOperationException("Population is not empty. PopulationCreator cannot be applied on scopes which already contain sub-scopes.");
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| 67 |
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| 68 | for (int i = 0; i < size; i++)
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| 69 | CurrentScope.SubScopes.Add(new Scope(i.ToString()));
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| 70 |
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[2834] | 71 | OperationCollection next = new OperationCollection();
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[2830] | 72 | for (int i = 0; i < CurrentScope.SubScopes.Count; i++) {
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[2834] | 73 | if (creator != null) next.Add(ExecutionContext.CreateOperation(creator, CurrentScope.SubScopes[i]));
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| 74 | if (evaluator != null) next.Add(ExecutionContext.CreateOperation(evaluator, CurrentScope.SubScopes[i]));
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[2830] | 75 | }
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| 76 | next.Add(base.Apply());
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| 77 | return next;
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| 78 | }
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| 79 | }
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| 80 | }
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