/* -*- 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