#region License Information /* HeuristicLab * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using System.Linq; using HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Operators; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Optimization.Operators { /// /// A shaking operator for VNS. /// [Item("ShakingOperator", "A shaking operator for VNS that can be filled with arbitrary manipulation operators.")] [StorableType("FE392285-B0A7-4559-A43B-920C47851500")] public class ShakingOperator : CheckedMultiOperator, IMultiNeighborhoodShakingOperator where T : class, IManipulator { public IValueLookupParameter CurrentNeighborhoodIndexParameter { get { return (IValueLookupParameter)Parameters["CurrentNeighborhoodIndex"]; } } public ILookupParameter NeighborhoodCountParameter { get { return (ILookupParameter)Parameters["NeighborhoodCount"]; } } [StorableConstructor] protected ShakingOperator(bool deserializing) : base(deserializing) { } protected ShakingOperator(ShakingOperator original, Cloner cloner) : base(original, cloner) { } public override IDeepCloneable Clone(Cloner cloner) { return new ShakingOperator(this, cloner); } public ShakingOperator() : base() { Parameters.Add(new ValueLookupParameter("CurrentNeighborhoodIndex", "The index of the operator that should be applied (k).")); Parameters.Add(new LookupParameter("NeighborhoodCount", "The number of operators that are available.")); } public override IOperation InstrumentedApply() { if (NeighborhoodCountParameter.ActualValue == null) NeighborhoodCountParameter.ActualValue = new IntValue(Operators.CheckedItems.Count()); else NeighborhoodCountParameter.ActualValue.Value = Operators.CheckedItems.Count(); int index = CurrentNeighborhoodIndexParameter.ActualValue.Value; var shaker = base.Operators.CheckedItems.SingleOrDefault(x => x.Index == index); OperationCollection next = new OperationCollection(base.InstrumentedApply()); if (shaker.Value != null) next.Insert(0, ExecutionContext.CreateChildOperation(shaker.Value)); return next; } } }