BonCbc.hpp

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// (C) Copyright International Business Machines Corporation 2007
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors :
// Pierre Bonami, International Business Machines Corporation
//
// Date : 04/19/2007

#ifndef BonCbc_H
#define BonCbc_H

//#include "BonBabSetupBase.hpp"
#include "CbcModel.hpp"

namespace Bonmin
{
  class BabSetupBase;
  class Bab
  {
  public:
    enum MipStatuses {FeasibleOptimal ,
        ProvenInfeasible ,
        Feasible ,
        UnboundedOrInfeasible /*Coninuous relaxation is unbounded.*/,
        NoSolutionKnown,
        NumMipStats};


    Bab();
    virtual ~Bab();
    virtual void branchAndBound(BabSetupBase & s);

    virtual void operator()(BabSetupBase & s);

    virtual void operator()(BabSetupBase * s){
       operator()(*s);}

    const double * bestSolution() const
    {
      return bestSolution_;
    }
    double bestObj() const
    {
      return bestObj_;
    }

    MipStatuses mipStatus() const
    {
      return mipStatus_;
    }

    double bestBound();

    int numNodes() const
    {
      return numNodes_;
    }
    int iterationCount()
    {
      return mipIterationCount_;
    }
    double continuousRelaxation()
    {
      return continuousRelaxation_;
    }

    virtual void replaceIntegers(OsiObject ** objects, int numberObjects)
    {}
    const CbcModel&  model() const
    {
      return model_;
    }

    CbcModel&  model()
    {
      return model_;
    }

  protected:
    double * bestSolution_;

    MipStatuses mipStatus_;
    double bestObj_;
    double bestBound_;
    double continuousRelaxation_;
    int numNodes_;
    int mipIterationCount_;
    CbcModel model_;
    CoinMessageHandler * modelHandler_;
    OsiObject** objects_;
    int nObjects_;
  };
}
#endif