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/* -*- mode: C++; indent-tabs-mode: nil; -*-
*
* This file is a part of LEMON, a generic C++ optimization library.
*
* Copyright (C) 2003-2013
* 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_CLP_H
#define LEMON_CLP_H
///\file
///\brief Header of the LEMON-CLP lp solver interface.
#include <vector>
#include <string>
#include <lemon/lp_base.h>
class ClpSimplex;
namespace lemon {
/// \ingroup lp_group
///
/// \brief Interface for the CLP solver
///
/// This class implements an interface for the Clp LP solver. The
/// Clp library is an object oriented lp solver library developed at
/// the IBM. The CLP is part of the COIN-OR package and it can be
/// used with Common Public License.
class ClpLp : public LpSolver {
protected:
ClpSimplex* _prob;
std::map<std::string, int> _col_names_ref;
std::map<std::string, int> _row_names_ref;
public:
/// \e
ClpLp();
/// \e
ClpLp(const ClpLp&);
/// \e
~ClpLp();
/// \e
virtual ClpLp* newSolver() const;
/// \e
virtual ClpLp* cloneSolver() const;
protected:
mutable double* _primal_ray;
mutable double* _dual_ray;
void _init_temporals();
void _clear_temporals();
protected:
virtual const char* _solverName() const;
virtual int _addCol();
virtual int _addRow();
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u);
virtual void _eraseCol(int i);
virtual void _eraseRow(int i);
virtual void _eraseColId(int i);
virtual void _eraseRowId(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 _getRowName(int row, std::string& name) const;
virtual void _setRowName(int row, const std::string& name);
virtual int _rowByName(const std::string& name) const;
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);
virtual void _getRowCoeffs(int i, InsertIterator b) const;
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);
virtual void _getColCoeffs(int i, InsertIterator 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 Value _getRowLowerBound(int i) const;
virtual void _setRowUpperBound(int i, Value value);
virtual Value _getRowUpperBound(int i) const;
virtual void _setObjCoeffs(ExprIterator, ExprIterator);
virtual void _getObjCoeffs(InsertIterator) const;
virtual void _setObjCoeff(int i, Value obj_coef);
virtual Value _getObjCoeff(int i) const;
virtual void _setSense(Sense sense);
virtual Sense _getSense() const;
virtual SolveExitStatus _solve();
virtual Value _getPrimal(int i) const;
virtual Value _getDual(int i) const;
virtual Value _getPrimalValue() const;
virtual Value _getPrimalRay(int i) const;
virtual Value _getDualRay(int i) const;
virtual VarStatus _getColStatus(int i) const;
virtual VarStatus _getRowStatus(int i) const;
virtual ProblemType _getPrimalType() const;
virtual ProblemType _getDualType() const;
virtual void _clear();
virtual void _messageLevel(MessageLevel);
public:
///Solves LP with primal simplex method.
SolveExitStatus solvePrimal();
///Solves LP with dual simplex method.
SolveExitStatus solveDual();
///Solves LP with barrier method.
SolveExitStatus solveBarrier();
///Returns the constraint identifier understood by CLP.
int clpRow(Row r) const { return rows(id(r)); }
///Returns the variable identifier understood by CLP.
int clpCol(Col c) const { return cols(id(c)); }
};
} //END OF NAMESPACE LEMON
#endif //LEMON_CLP_H
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