BonLpBranchingSolver.hpp

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// Copyright (C) 2006, 2007 International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef BonLpBranchingSolver_H
#define BonLpBranchingSolver_H
 
#include "BonStrongBranchingSolver.hpp"
#include "BonEcpCuts.hpp"
 
namespace Bonmin
{

 
  class LpBranchingSolver : public StrongBranchingSolver
  {
 
  public:

    LpBranchingSolver (BabSetupBase *b);
    LpBranchingSolver (const LpBranchingSolver &);

    LpBranchingSolver & operator= (const LpBranchingSolver& rhs);

    virtual ~LpBranchingSolver ();

    virtual void markHotStart(OsiTMINLPInterface* tminlp_interface);

    virtual TNLPSolver::ReturnStatus solveFromHotStart(OsiTMINLPInterface* tminlp_interface);

    virtual void unmarkHotStart(OsiTMINLPInterface* tminlp_interface);
 
    void setMaxCuttingPlaneIter(int num)
    {
      maxCuttingPlaneIterations_ = num;
    }
 
    static void registerOptions(Ipopt::SmartPtr<Bonmin::RegisteredOptions> roptions);
 
  private:
    LpBranchingSolver ();

    OsiSolverInterface* lin_;

    CoinWarmStart* warm_;

    EcpCuts* ecp_;

    int maxCuttingPlaneIterations_;

    double abs_ecp_tol_;

    double rel_ecp_tol_;
 
 
   enum WarmStartMethod {
     Basis=0 ,
     Clone 
   };
   WarmStartMethod warm_start_mode_;
  };
 
}
#endif