CouenneChooseVariable.hpp

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/* $Id: CouenneChooseVariable.hpp 792 2012-01-24 17:24:15Z pbelotti $
 *
 * Name:    CouenneChooseVariable.hpp
 * Authors: Pierre Bonami, IBM Corp.
 *          Pietro Belotti, Carnegie Mellon University
 * Purpose: Branching object for choosing branching auxiliary variable
 *
 * (C) Carnegie-Mellon University, 2006.
 * This file is licensed under the Eclipse Public License (EPL)
 */

#ifndef COUENNECHOOSEVARIABLE_HPP
#define COUENNECHOOSEVARIABLE_HPP

#include "OsiChooseVariable.hpp"
#include "BonBabInfos.hpp"
#include "CouenneJournalist.hpp"
#include "BonRegisteredOptions.hpp"

namespace Couenne {

class CouenneProblem;

class CouenneChooseVariable: public OsiChooseVariable {

public:

  CouenneChooseVariable ();

  CouenneChooseVariable (const OsiSolverInterface *, CouenneProblem *, JnlstPtr jnlst);

  CouenneChooseVariable (const CouenneChooseVariable &);

  CouenneChooseVariable &operator= (const CouenneChooseVariable &);

  virtual OsiChooseVariable *clone() const
  {return new CouenneChooseVariable (*this);}

  virtual ~CouenneChooseVariable () {}

  virtual int setupList (OsiBranchingInformation *, bool);

  virtual bool feasibleSolution (const OsiBranchingInformation * info,
                                 const double * solution,
                                 int numberObjects,
                                 const OsiObject ** objects);

  // choose object to branch based on earlier setup
  //   virtual int chooseVariable (OsiSolverInterface * solver, 
  //                          OsiBranchingInformation *info, 
  //                          bool fixVariables);

  static void registerOptions (Ipopt::SmartPtr <Bonmin::RegisteredOptions> roptions);

protected:

  CouenneProblem *problem_;

  JnlstPtr jnlst_;
};

}

#endif