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deba@inf.elte.hu
Port LP and MIP solvers from SVN -r3509 (#44)
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/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Copyright (C) 2003-2008

 * 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>



struct cpxenv;

struct cpxlp;



namespace lemon {





  /// \brief Interface for the CPLEX solver

  ///

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

  class LpCplex :virtual public LpSolverBase {



  public:



    typedef LpSolverBase Parent;



    /// \e

    int status;

    cpxenv* env;

    cpxlp* lp;





    /// \e

    LpCplex();

    /// \e

    LpCplex(const 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 _getColName(int col, std::string & name) const;

    virtual void _setColName(int col, const std::string & name);

    virtual int _colByName(const std::string& name) const;

    virtual void _setRowCoeffs(int i, ConstRowIterator b, ConstRowIterator e);

    virtual void _getRowCoeffs(int i, RowIterator b) const;

    virtual void _setColCoeffs(int i, ConstColIterator b, ConstColIterator e);

    virtual void _getColCoeffs(int i, ColIterator b) const;

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

    virtual Value _getCoeff(int row, int col) const;



    virtual void _setColLowerBound(int i, Value value);

    virtual Value _getColLowerBound(int i) const;

    virtual void _setColUpperBound(int i, Value value);

    virtual Value _getColUpperBound(int i) const;



//     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 _getRowBounds(int i, Value &lb, Value &ub) const;

    virtual void _setObjCoeff(int i, Value obj_coef);

    virtual Value _getObjCoeff(int i) const;

    virtual void _clearObj();





    virtual SolveExitStatus _solve();

    virtual Value _getPrimal(int i) const;

    virtual Value _getDual(int i) const;

    virtual Value _getPrimalValue() const;

    virtual bool _isBasicCol(int i) const;



    virtual SolutionStatus _getPrimalStatus() const;

    virtual SolutionStatus _getDualStatus() const;

    virtual ProblemTypes _getProblemType() const;





    virtual void _setMax();

    virtual void _setMin();



    virtual bool _isMax() const;



  public:



    cpxenv* cplexEnv() { return env; }

    cpxlp* cplexLp() { return lp; }



  };

} //END OF NAMESPACE LEMON



#endif //LEMON_LP_CPLEX_H