/* $Id: CbcHeuristicDiveLineSearch.hpp 1173 2009-06-04 09:44:10Z forrest $ */
// Copyright (C) 2008, International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef CbcHeuristicDiveLineSearch_H
#define CbcHeuristicDiveLineSearch_H

#include "CbcHeuristicDive.hpp"

/** DiveLineSearch class
 */

class CbcHeuristicDiveLineSearch : public CbcHeuristicDive {
public:

  // Default Constructor 
  CbcHeuristicDiveLineSearch ();

  // Constructor with model - assumed before cuts
  CbcHeuristicDiveLineSearch (CbcModel & model);
  
  // Copy constructor 
  CbcHeuristicDiveLineSearch ( const CbcHeuristicDiveLineSearch &);
   
  // Destructor 
  ~CbcHeuristicDiveLineSearch ();

  /// Clone
  virtual CbcHeuristicDiveLineSearch * clone() const;
  
  /// Assignment operator 
  CbcHeuristicDiveLineSearch & operator=(const CbcHeuristicDiveLineSearch& rhs);

  /// Create C++ lines to get to current state
  virtual void generateCpp( FILE * fp) ;

  /// Selects the next variable to branch on
  /** Returns true if all the fractional variables can be trivially
      rounded. Returns false, if there is at least one fractional variable
      that is not trivially roundable. In this case, the bestColumn
      returned will not be trivially roundable.
  */
  virtual bool selectVariableToBranch(OsiSolverInterface* solver,
				      const double* newSolution,
				      int& bestColumn,
				      int& bestRound);

};

#endif
