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/* -*- mode: C++; indent-tabs-mode: nil; -*-
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*
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* This file is a part of LEMON, a generic C++ optimization library.
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*
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* Copyright (C) 2003-2008
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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* (Egervary Research Group on Combinatorial Optimization, EGRES).
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*
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* Permission to use, modify and distribute this software is granted
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* provided that this copyright notice appears in all copies. For
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* precise terms see the accompanying LICENSE file.
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*
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* This software is provided "AS IS" with no warranty of any kind,
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* express or implied, and with no claim as to its suitability for any
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* purpose.
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*
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*/
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#ifndef LEMON_CLP_H
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#define LEMON_CLP_H
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///\file
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///\brief Header of the LEMON-CLP lp solver interface.
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#include <vector>
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#include <string>
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#include <lemon/lp_base.h>
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class ClpSimplex;
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namespace lemon {
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/// \ingroup lp_group
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///
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/// \brief Interface for the CLP solver
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///
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/// This class implements an interface for the Clp LP solver. The
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/// Clp library is an object oriented lp solver library developed at
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/// the IBM. The CLP is part of the COIN-OR package and it can be
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/// used with Common Public License.
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class ClpLp : public LpSolver {
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protected:
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ClpSimplex* _prob;
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std::map<std::string, int> _col_names_ref;
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std::map<std::string, int> _row_names_ref;
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public:
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/// \e
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ClpLp();
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/// \e
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ClpLp(const ClpLp&);
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/// \e
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~ClpLp();
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/// \e
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virtual ClpLp* newSolver() const;
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/// \e
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virtual ClpLp* cloneSolver() const;
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protected:
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mutable double* _primal_ray;
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mutable double* _dual_ray;
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void _init_temporals();
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void _clear_temporals();
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protected:
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virtual const char* _solverName() const;
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virtual int _addCol();
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virtual int _addRow();
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virtual void _eraseCol(int i);
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virtual void _eraseRow(int i);
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virtual void _eraseColId(int i);
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virtual void _eraseRowId(int i);
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virtual void _getColName(int col, std::string& name) const;
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virtual void _setColName(int col, const std::string& name);
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virtual int _colByName(const std::string& name) const;
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virtual void _getRowName(int row, std::string& name) const;
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virtual void _setRowName(int row, const std::string& name);
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virtual int _rowByName(const std::string& name) const;
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virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);
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virtual void _getRowCoeffs(int i, InsertIterator b) const;
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virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);
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virtual void _getColCoeffs(int i, InsertIterator b) const;
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virtual void _setCoeff(int row, int col, Value value);
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virtual Value _getCoeff(int row, int col) const;
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virtual void _setColLowerBound(int i, Value value);
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virtual Value _getColLowerBound(int i) const;
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virtual void _setColUpperBound(int i, Value value);
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virtual Value _getColUpperBound(int i) const;
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virtual void _setRowLowerBound(int i, Value value);
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virtual Value _getRowLowerBound(int i) const;
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virtual void _setRowUpperBound(int i, Value value);
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virtual Value _getRowUpperBound(int i) const;
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virtual void _setObjCoeffs(ExprIterator, ExprIterator);
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virtual void _getObjCoeffs(InsertIterator) const;
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virtual void _setObjCoeff(int i, Value obj_coef);
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virtual Value _getObjCoeff(int i) const;
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virtual void _setSense(Sense sense);
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virtual Sense _getSense() const;
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virtual SolveExitStatus _solve();
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virtual Value _getPrimal(int i) const;
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virtual Value _getDual(int i) const;
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virtual Value _getPrimalValue() const;
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virtual Value _getPrimalRay(int i) const;
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virtual Value _getDualRay(int i) const;
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virtual VarStatus _getColStatus(int i) const;
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virtual VarStatus _getRowStatus(int i) const;
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virtual ProblemType _getPrimalType() const;
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virtual ProblemType _getDualType() const;
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virtual void _clear();
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virtual void _messageLevel(MessageLevel);
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public:
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///Solves LP with primal simplex method.
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SolveExitStatus solvePrimal();
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///Solves LP with dual simplex method.
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SolveExitStatus solveDual();
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///Solves LP with barrier method.
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SolveExitStatus solveBarrier();
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///Returns the constraint identifier understood by CLP.
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int clpRow(Row r) const { return rows(id(r)); }
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///Returns the variable identifier understood by CLP.
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int clpCol(Col c) const { return cols(id(c)); }
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};
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} //END OF NAMESPACE LEMON
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#endif //LEMON_CLP_H
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