CbcBranchToFixLots.hpp

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// $Id$
// Copyright (C) 2004, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
 
// Edwin 11/13/2009-- carved out of CbcBranchCut
 
#ifndef CbcBranchToFixLots_H
#define CbcBranchToFixLots_H
 
#include "CbcBranchCut.hpp"
#include "CbcBranchBase.hpp"
#include "OsiRowCut.hpp"
#include "CoinPackedMatrix.hpp"

 
class CbcBranchToFixLots : public CbcBranchCut {
 
public:
  // Default Constructor
  CbcBranchToFixLots();

  CbcBranchToFixLots(CbcModel *model, double djTolerance,
    double fractionFixed, int depth,
    int numberClean = 0,
    const char *mark = NULL,
    bool alwaysCreate = false);
 
  // Copy constructor
  CbcBranchToFixLots(const CbcBranchToFixLots &);

  virtual CbcObject *clone() const;
 
  // Assignment operator
  CbcBranchToFixLots &operator=(const CbcBranchToFixLots &rhs);
 
  // Destructor
  ~CbcBranchToFixLots();

  int shallWe() const;

  virtual double infeasibility(const OsiBranchingInformation *info,
    int &preferredWay) const;
  virtual bool canDoHeuristics() const
  {
    return true;
  }

  virtual CbcBranchingObject *createCbcBranch(OsiSolverInterface *solver, const OsiBranchingInformation *info, int way);
  virtual void redoSequenceEtc(CbcModel *model, int numberColumns, const int *originalColumns);
 
protected:

  double djTolerance_;
  double fractionFixed_;
  char *mark_;
  CoinPackedMatrix matrixByRow_;
  int depth_;
  int numberClean_;
  bool alwaysCreate_;
};
#endif
 
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