/* -*- C++ -*-

  * src/lemon/lp_solver_skeleton.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_SOLVER_SKELETON

 #define LEMON_LP_SOLVER_SKELETON

 #include"lp_base.h"

 ///\file

 ///\brief A skeleton file to implement LP solver interfaces

 namespace lemon {

   ///A skeleton class to implement LP solver interfaces

   class LpSolverSkeleton :public LpSolverBase {

     int col_num,row_num;

   protected:

     virtual int _addCol();

     virtual int _addRow();

     virtual void _setRowCoeffs(int i, 

 			       int length,

                                int  const * indices, 

                                Value  const * values );

     virtual void _setColCoeffs(int i, 

 			       int length,

                                int  const * indices, 

                                Value  const * 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);

     virtual SolutionType _solve();

     virtual Value _getSolution(int i);

   public:

     LpSolverSkeleton() : LpSolverBase(), col_num(0), row_num(0) {}

   };  

 } //namespace lemon

 #endif // LEMON_LP_SOLVER_SKELETON