1  #region License Information


2  /* HeuristicLab


3  * Copyright (C) 20022015 Joseph Helm and 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 


22  using System;


23  using HeuristicLab.Operators;


24  using HeuristicLab.Core;


25  using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;


26  using HeuristicLab.Common;


27  using HeuristicLab.Data;


28  using HeuristicLab.Parameters;


29 


30 


31  namespace HeuristicLab.Problems.BinPacking {


32  [Item("Packingplan Evaluation Algorithm", "Represents a composition of a decoder and an evaluator for binpacking problems.")]


33  [StorableClass]


34  public class PackingPlanEvaluationAlgorithm<E, D, B, I> : SingleSuccessorOperator, IPackingPlanEvaluationAlgorithm


35  where E : Item //E defines the used Encoding


36  where D : class, IPackingPosition


37  where B : PackingShape<D>


38  where I : PackingShape<D>, IPackingItem {


39 


40  public IValueLookupParameter<IPackingSolutionDecoder> PackingSolutionDecoderParameter {


41  get { return (IValueLookupParameter<IPackingSolutionDecoder>)Parameters["PackingSolutionDecoder"]; }


42  }


43  ILookupParameter<IPackingSolutionDecoder> IPackingPlanEvaluationAlgorithm.PackingSolutionDecoderParameter {


44  get { return PackingSolutionDecoderParameter; }


45  }


46  public IValueLookupParameter<IEvaluator> PackingPlanEvaluatorParameter {


47  get { return (IValueLookupParameter<IEvaluator>)Parameters["PackingPlanEvaluator"]; }


48  }


49  ILookupParameter<IEvaluator> IPackingPlanEvaluationAlgorithm.PackingPlanEvaluatorParameter {


50  get { return PackingPlanEvaluatorParameter; }


51  }


52  public ILookupParameter<DoubleValue> QualityParameter {


53  get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }


54  }


55 


56  [StorableConstructor]


57  protected PackingPlanEvaluationAlgorithm(bool deserializing) : base(deserializing) { }


58  protected PackingPlanEvaluationAlgorithm(PackingPlanEvaluationAlgorithm<E, D, B, I> original, Cloner cloner)


59  : base(original, cloner) {


60  }


61  public PackingPlanEvaluationAlgorithm ()


62  : base() {


63  Parameters.Add(new ValueLookupParameter<IPackingSolutionDecoder>("PackingSolutionDecoder", "The decoding operator that is used to calculate a packing plan from the used representation."));


64  Parameters.Add(new ValueLookupParameter<IEvaluator>("PackingPlanEvaluator", "The actual packing plan evaluation operator."));


65  Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality value aka fitness value of the solution."));


66  QualityParameter.Hidden = true;


67  }


68  public override IDeepCloneable Clone(Cloner cloner) {


69  return new PackingPlanEvaluationAlgorithm<E, D, B, I>(this, cloner);


70  }


71 


72  public override IOperation Apply() {


73  var decoder = PackingSolutionDecoderParameter.ActualValue;


74  var evaluator = PackingPlanEvaluatorParameter.ActualValue;


75  if (evaluator == null) throw new InvalidOperationException("A PackingPlanEvaluator could not be found.");


76 


77  var operations = new OperationCollection(base.Apply());


78  operations.Insert(0, ExecutionContext.CreateChildOperation(evaluator));


79  if (decoder != null) // decode before evaluating


80  operations.Insert(0, ExecutionContext.CreateChildOperation(decoder));


81  return operations;


82  }


83  }


84  } 
