/* -*- C++ -*-

 * lemon/lp_cplex.h - Part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_LP_CPLEX_H

#define LEMON_LP_CPLEX_H

///\file

///\brief Header of the LEMON-CPLEX lp solver interface.

#include <lemon/lp_base.h>

extern "C" {

#include <ilcplex/cplex.h>

}

namespace lemon {

  /// \brief Interface for the CPLEX solver

  /// 

  /// This class implements an interface for the CPLEX LP solver.

  class LpCplex : public LpSolverBase {

  public:

    typedef LpSolverBase Parent;

    /// \e

    int status;

    CPXENVptr env;

    CPXLPptr lp;

    /// \e

    LpCplex();

    /// \e

    ~LpCplex();

  protected:

    virtual LpSolverBase &_newLp();

    virtual LpSolverBase &_copyLp();

    virtual int _addCol();

    virtual int _addRow();

    virtual void _eraseCol(int i);

    virtual void _eraseRow(int i);

    virtual void _setRowCoeffs(int i, 

			       int length,

                               const int   * indices, 

                               const Value   * values );

    virtual void _setColCoeffs(int i, 

			       int length,

                               const int   * indices, 

                               const Value   * values);

    virtual void _setCoeff(int row, int col, Value value);

    virtual void _setColLowerBound(int i, Value value);

    virtual void _setColUpperBound(int i, Value value);

//     virtual void _setRowLowerBound(int i, Value value);

//     virtual void _setRowUpperBound(int i, Value value);

    virtual void _setRowBounds(int i, Value lower, Value upper);

    virtual void _setObjCoeff(int i, Value obj_coef);

    virtual void _clearObj();

    ///\e

    virtual SolveExitStatus _solve();

    virtual Value _getPrimal(int i);

    virtual Value _getDual(int i);

    virtual Value _getPrimalValue();

    virtual bool _isBasicCol(int i);

    virtual SolutionStatus _getPrimalStatus();

    virtual SolutionStatus _getDualStatus();

    virtual ProblemTypes _getProblemType();

    virtual void _setMax();

    virtual void _setMin();

  };

} //END OF NAMESPACE LEMON

#endif //LEMON_LP_CPLEX_H