[2830] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7268] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2830] | 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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[4722] | 22 | using HeuristicLab.Common;
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[2830] | 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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[3021] | 29 | namespace HeuristicLab.Optimization.Operators {
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[2830] | 30 | /// <summary>
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[5208] | 31 | /// An operator which creates new solutions. Evaluation of the new solutions is executed in parallel, if an engine is used which supports parallelization.
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[2830] | 32 | /// </summary>
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[5208] | 33 | [Item("SolutionsCreator", "An operator which creates new solutions. Evaluation of the new solutions is executed in parallel, if an engine is used which supports parallelization.")]
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[3017] | 34 | [StorableClass]
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[3023] | 35 | public sealed class SolutionsCreator : SingleSuccessorOperator {
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[3048] | 36 | public ValueLookupParameter<IntValue> NumberOfSolutionsParameter {
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| 37 | get { return (ValueLookupParameter<IntValue>)Parameters["NumberOfSolutions"]; }
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[2830] | 38 | }
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| 39 | public ValueLookupParameter<IOperator> SolutionCreatorParameter {
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| 40 | get { return (ValueLookupParameter<IOperator>)Parameters["SolutionCreator"]; }
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| 41 | }
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[2882] | 42 | public ValueLookupParameter<IOperator> EvaluatorParameter {
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| 43 | get { return (ValueLookupParameter<IOperator>)Parameters["Evaluator"]; }
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[2830] | 44 | }
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[6430] | 45 | public ValueLookupParameter<BoolValue> ParallelParameter {
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| 46 | get { return (ValueLookupParameter<BoolValue>)Parameters["Parallel"]; }
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| 47 | }
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[2830] | 48 | private ScopeParameter CurrentScopeParameter {
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| 49 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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| 50 | }
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| 51 | public IScope CurrentScope {
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| 52 | get { return CurrentScopeParameter.ActualValue; }
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| 53 | }
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[3048] | 54 | public IntValue NumberOfSolutions {
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[3044] | 55 | get { return NumberOfSolutionsParameter.Value; }
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| 56 | set { NumberOfSolutionsParameter.Value = value; }
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| 57 | }
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[2830] | 58 |
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[4722] | 59 | [StorableConstructor]
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| 60 | private SolutionsCreator(bool deserializing) : base(deserializing) { }
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| 61 | private SolutionsCreator(SolutionsCreator original, Cloner cloner) : base(original, cloner) { }
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[3023] | 62 | public SolutionsCreator()
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[2830] | 63 | : base() {
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[3048] | 64 | Parameters.Add(new ValueLookupParameter<IntValue>("NumberOfSolutions", "The number of solutions that should be created."));
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[2830] | 65 | Parameters.Add(new ValueLookupParameter<IOperator>("SolutionCreator", "The operator which is used to create new solutions."));
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[5208] | 66 | Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator which is used to evaluate new solutions. This operator is executed in parallel, if an engine is used which supports parallelization."));
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[6430] | 67 | Parameters.Add(new ValueLookupParameter<BoolValue>("Parallel", "True if the operator should be applied in parallel on all sub-scopes, otherwise false.", new BoolValue(true)));
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| 68 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope to which the new solutions are added as sub-scopes."));
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[2830] | 69 | }
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[6430] | 70 | [StorableHook(HookType.AfterDeserialization)]
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| 71 | private void AfterDeserialization() {
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| 72 | if (!Parameters.ContainsKey("Parallel")) Parameters.Add(new ValueLookupParameter<BoolValue>("Parallel", "True if the operator should be applied in parallel on all sub-scopes, otherwise false.", new BoolValue(true))); // backwards compatibility
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| 73 | }
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[2830] | 74 |
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[4722] | 75 | public override IDeepCloneable Clone(Cloner cloner) {
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| 76 | return new SolutionsCreator(this, cloner);
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| 77 | }
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| 78 |
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[2834] | 79 | public override IOperation Apply() {
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[3023] | 80 | int count = NumberOfSolutionsParameter.ActualValue.Value;
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[2830] | 81 | IOperator creator = SolutionCreatorParameter.ActualValue;
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[2882] | 82 | IOperator evaluator = EvaluatorParameter.ActualValue;
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[6430] | 83 | bool parallel = ParallelParameter.ActualValue.Value;
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[2830] | 84 |
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[3023] | 85 | int current = CurrentScope.SubScopes.Count;
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| 86 | for (int i = 0; i < count; i++)
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| 87 | CurrentScope.SubScopes.Add(new Scope((current + i).ToString()));
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[2830] | 88 |
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[5208] | 89 | OperationCollection creation = new OperationCollection();
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[6430] | 90 | OperationCollection evaluation = new OperationCollection() { Parallel = parallel };
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[3023] | 91 | for (int i = 0; i < count; i++) {
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[5208] | 92 | if (creator != null) creation.Add(ExecutionContext.CreateOperation(creator, CurrentScope.SubScopes[current + i]));
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| 93 | if (evaluator != null) evaluation.Add(ExecutionContext.CreateOperation(evaluator, CurrentScope.SubScopes[current + i]));
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[2830] | 94 | }
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[5208] | 95 | OperationCollection next = new OperationCollection();
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| 96 | next.Add(creation);
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| 97 | next.Add(evaluation);
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[2830] | 98 | next.Add(base.Apply());
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| 99 | return next;
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| 100 | }
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| 101 | }
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| 102 | }
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