/* -*- C++ -*-

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

 *

 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Combinatorial Optimization Research Group, 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 "lp_base.h"

extern "C" {

#include "ilcplex/cplex.h"

}

namespace lemon {

  /// \brief Wrapper for GLPK solver

  /// 

  /// This class implements a lemon wrapper for GLPK.

  class LpCplex : public LpSolverBase {

  public:

    typedef LpSolverBase Parent;

    /// \e

    int status;

    CPXENVptr env;

    CPXLPptr lp;

    /// \e

    LpCplex() : Parent() {

      env = NULL;

      lp = NULL;

      env = CPXopenCPLEXdevelop(&status);     

//     if (Env == NULL)

//     {

//          fprintf(stderr,"A CPLEX környezet megnyitása sikertelen.\n");

// 	 CPXgeterrorstring(Env, Status, ErrorMsg);

// 	 fprintf(stderr,"%s",ErrorMsg);

// 	 goto Terminate;

//     }

    // *** A problema létrehozása ***

    lp = CPXcreateprob(env, &status, "LP problem");

//    if (Problem == NULL)

//     {

// 	fprintf(stderr,"Az LP létrehozása sikertelen");

// 	goto Terminate;

//     }

    }

    /// \e

    ~LpCplex() {

      status = CPXfreeprob(env,&lp); 

//       if (Status != 0)

// 	{

// 	  fprintf(stderr,"A CPLEX feladat törlése sikertelen.\n");

// 	  CPXgeterrorstring(Env, Status, ErrorMsg);

// 	  fprintf(stderr,"%s",ErrorMsg);

// 	  goto Terminate;

// 	}

      status = CPXcloseCPLEX(&env); 

//       if (Status != 0)

// 	{

// 	  fprintf(stderr,"A CPLEX környezet bezárása sikertelen.\n");

// 	  CPXgeterrorstring(Env, Status, ErrorMsg);

// 	  fprintf(stderr,"%s",ErrorMsg);

// 	  goto Terminate;

// 	}

    }

  protected:

    virtual int _addCol();

    virtual int _addRow();

    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 _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 _setObjCoeff(int i, Value obj_coef);

    ///\e

    ///\bug Unimplemented

    ///

    virtual SolutionStatus _solve();

    ///\e

    ///\bug Unimplemented

    ///

    virtual Value _getSolution(int i);

  };

} //END OF NAMESPACE LEMON

#endif //LEMON_LP_CPLEX_H