[484] | 1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
---|
| 2 | * |
---|
| 3 | * This file is a part of LEMON, a generic C++ optimization library. |
---|
| 4 | * |
---|
| 5 | * Copyright (C) 2003-2008 |
---|
| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
| 8 | * |
---|
| 9 | * Permission to use, modify and distribute this software is granted |
---|
| 10 | * provided that this copyright notice appears in all copies. For |
---|
| 11 | * precise terms see the accompanying LICENSE file. |
---|
| 12 | * |
---|
| 13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
| 14 | * express or implied, and with no claim as to its suitability for any |
---|
| 15 | * purpose. |
---|
| 16 | * |
---|
| 17 | */ |
---|
| 18 | |
---|
| 19 | #ifndef LEMON_CPLEX_H |
---|
| 20 | #define LEMON_CPLEX_H |
---|
| 21 | |
---|
| 22 | ///\file |
---|
| 23 | ///\brief Header of the LEMON-CPLEX lp solver interface. |
---|
| 24 | |
---|
| 25 | #include <lemon/lp_base.h> |
---|
| 26 | |
---|
| 27 | struct cpxenv; |
---|
| 28 | struct cpxlp; |
---|
| 29 | |
---|
| 30 | namespace lemon { |
---|
| 31 | |
---|
| 32 | /// \brief Reference counted wrapper around cpxenv pointer |
---|
| 33 | /// |
---|
| 34 | /// The cplex uses environment object which is responsible for |
---|
| 35 | /// checking the proper license usage. This class provides a simple |
---|
| 36 | /// interface for share the environment object between different |
---|
| 37 | /// problems. |
---|
| 38 | class CplexEnv { |
---|
| 39 | friend class CplexBase; |
---|
| 40 | private: |
---|
| 41 | cpxenv* _env; |
---|
| 42 | mutable int* _cnt; |
---|
| 43 | |
---|
| 44 | public: |
---|
| 45 | |
---|
| 46 | /// \brief This exception is thrown when the license check is not |
---|
| 47 | /// sufficient |
---|
| 48 | class LicenseError : public Exception { |
---|
| 49 | friend class CplexEnv; |
---|
| 50 | private: |
---|
| 51 | |
---|
| 52 | LicenseError(int status); |
---|
| 53 | char _message[510]; |
---|
| 54 | |
---|
| 55 | public: |
---|
| 56 | |
---|
| 57 | /// The short error message |
---|
| 58 | virtual const char* what() const throw() { |
---|
| 59 | return _message; |
---|
| 60 | } |
---|
| 61 | }; |
---|
| 62 | |
---|
| 63 | /// Constructor |
---|
| 64 | CplexEnv(); |
---|
| 65 | /// Shallow copy constructor |
---|
| 66 | CplexEnv(const CplexEnv&); |
---|
| 67 | /// Shallow assignement |
---|
| 68 | CplexEnv& operator=(const CplexEnv&); |
---|
| 69 | /// Destructor |
---|
| 70 | virtual ~CplexEnv(); |
---|
| 71 | |
---|
| 72 | protected: |
---|
| 73 | |
---|
| 74 | cpxenv* cplexEnv() { return _env; } |
---|
| 75 | const cpxenv* cplexEnv() const { return _env; } |
---|
| 76 | }; |
---|
| 77 | |
---|
| 78 | /// \brief Base interface for the CPLEX LP and MIP solver |
---|
| 79 | /// |
---|
| 80 | /// This class implements the common interface of the CPLEX LP and |
---|
| 81 | /// MIP solvers. |
---|
| 82 | /// \ingroup lp_group |
---|
| 83 | class CplexBase : virtual public LpBase { |
---|
| 84 | protected: |
---|
| 85 | |
---|
| 86 | CplexEnv _env; |
---|
| 87 | cpxlp* _prob; |
---|
| 88 | |
---|
| 89 | CplexBase(); |
---|
| 90 | CplexBase(const CplexEnv&); |
---|
| 91 | CplexBase(const CplexBase &); |
---|
| 92 | virtual ~CplexBase(); |
---|
| 93 | |
---|
| 94 | virtual int _addCol(); |
---|
| 95 | virtual int _addRow(); |
---|
| 96 | |
---|
| 97 | virtual void _eraseCol(int i); |
---|
| 98 | virtual void _eraseRow(int i); |
---|
| 99 | |
---|
| 100 | virtual void _eraseColId(int i); |
---|
| 101 | virtual void _eraseRowId(int i); |
---|
| 102 | |
---|
| 103 | virtual void _getColName(int col, std::string& name) const; |
---|
| 104 | virtual void _setColName(int col, const std::string& name); |
---|
| 105 | virtual int _colByName(const std::string& name) const; |
---|
| 106 | |
---|
| 107 | virtual void _getRowName(int row, std::string& name) const; |
---|
| 108 | virtual void _setRowName(int row, const std::string& name); |
---|
| 109 | virtual int _rowByName(const std::string& name) const; |
---|
| 110 | |
---|
| 111 | virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
---|
| 112 | virtual void _getRowCoeffs(int i, InsertIterator b) const; |
---|
| 113 | |
---|
| 114 | virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
---|
| 115 | virtual void _getColCoeffs(int i, InsertIterator b) const; |
---|
| 116 | |
---|
| 117 | virtual void _setCoeff(int row, int col, Value value); |
---|
| 118 | virtual Value _getCoeff(int row, int col) const; |
---|
| 119 | |
---|
| 120 | virtual void _setColLowerBound(int i, Value value); |
---|
| 121 | virtual Value _getColLowerBound(int i) const; |
---|
| 122 | |
---|
| 123 | virtual void _setColUpperBound(int i, Value value); |
---|
| 124 | virtual Value _getColUpperBound(int i) const; |
---|
| 125 | |
---|
| 126 | private: |
---|
| 127 | void _set_row_bounds(int i, Value lb, Value ub); |
---|
| 128 | protected: |
---|
| 129 | |
---|
| 130 | virtual void _setRowLowerBound(int i, Value value); |
---|
| 131 | virtual Value _getRowLowerBound(int i) const; |
---|
| 132 | |
---|
| 133 | virtual void _setRowUpperBound(int i, Value value); |
---|
| 134 | virtual Value _getRowUpperBound(int i) const; |
---|
| 135 | |
---|
| 136 | virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
---|
| 137 | virtual void _getObjCoeffs(InsertIterator b) const; |
---|
| 138 | |
---|
| 139 | virtual void _setObjCoeff(int i, Value obj_coef); |
---|
| 140 | virtual Value _getObjCoeff(int i) const; |
---|
| 141 | |
---|
| 142 | virtual void _setSense(Sense sense); |
---|
| 143 | virtual Sense _getSense() const; |
---|
| 144 | |
---|
| 145 | virtual void _clear(); |
---|
| 146 | |
---|
| 147 | public: |
---|
| 148 | |
---|
| 149 | /// Returns the used \c CplexEnv instance |
---|
| 150 | const CplexEnv& env() const { return _env; } |
---|
| 151 | /// |
---|
| 152 | const cpxenv* cplexEnv() const { return _env.cplexEnv(); } |
---|
| 153 | |
---|
| 154 | cpxlp* cplexLp() { return _prob; } |
---|
| 155 | const cpxlp* cplexLp() const { return _prob; } |
---|
| 156 | |
---|
| 157 | }; |
---|
| 158 | |
---|
| 159 | /// \brief Interface for the CPLEX LP solver |
---|
| 160 | /// |
---|
| 161 | /// This class implements an interface for the CPLEX LP solver. |
---|
| 162 | ///\ingroup lp_group |
---|
[485] | 163 | class CplexLp : public CplexBase, public LpSolver { |
---|
[484] | 164 | public: |
---|
| 165 | /// \e |
---|
[485] | 166 | CplexLp(); |
---|
[484] | 167 | /// \e |
---|
[485] | 168 | CplexLp(const CplexEnv&); |
---|
[484] | 169 | /// \e |
---|
[485] | 170 | CplexLp(const CplexLp&); |
---|
[484] | 171 | /// \e |
---|
[485] | 172 | virtual ~CplexLp(); |
---|
[484] | 173 | |
---|
| 174 | private: |
---|
| 175 | |
---|
| 176 | // these values cannot retrieved element by element |
---|
| 177 | mutable std::vector<int> _col_status; |
---|
| 178 | mutable std::vector<int> _row_status; |
---|
| 179 | |
---|
| 180 | mutable std::vector<Value> _primal_ray; |
---|
| 181 | mutable std::vector<Value> _dual_ray; |
---|
| 182 | |
---|
| 183 | void _clear_temporals(); |
---|
| 184 | |
---|
| 185 | SolveExitStatus convertStatus(int status); |
---|
| 186 | |
---|
| 187 | protected: |
---|
| 188 | |
---|
[485] | 189 | virtual CplexLp* _cloneSolver() const; |
---|
| 190 | virtual CplexLp* _newSolver() const; |
---|
[484] | 191 | |
---|
| 192 | virtual const char* _solverName() const; |
---|
| 193 | |
---|
| 194 | virtual SolveExitStatus _solve(); |
---|
| 195 | virtual Value _getPrimal(int i) const; |
---|
| 196 | virtual Value _getDual(int i) const; |
---|
| 197 | virtual Value _getPrimalValue() const; |
---|
| 198 | |
---|
| 199 | virtual VarStatus _getColStatus(int i) const; |
---|
| 200 | virtual VarStatus _getRowStatus(int i) const; |
---|
| 201 | |
---|
| 202 | virtual Value _getPrimalRay(int i) const; |
---|
| 203 | virtual Value _getDualRay(int i) const; |
---|
| 204 | |
---|
| 205 | virtual ProblemType _getPrimalType() const; |
---|
| 206 | virtual ProblemType _getDualType() const; |
---|
| 207 | |
---|
| 208 | public: |
---|
| 209 | |
---|
| 210 | /// Solve with primal simplex method |
---|
| 211 | SolveExitStatus solvePrimal(); |
---|
| 212 | |
---|
| 213 | /// Solve with dual simplex method |
---|
| 214 | SolveExitStatus solveDual(); |
---|
| 215 | |
---|
| 216 | /// Solve with barrier method |
---|
| 217 | SolveExitStatus solveBarrier(); |
---|
| 218 | |
---|
| 219 | }; |
---|
| 220 | |
---|
| 221 | /// \brief Interface for the CPLEX MIP solver |
---|
| 222 | /// |
---|
| 223 | /// This class implements an interface for the CPLEX MIP solver. |
---|
| 224 | ///\ingroup lp_group |
---|
[485] | 225 | class CplexMip : public CplexBase, public MipSolver { |
---|
[484] | 226 | public: |
---|
| 227 | /// \e |
---|
[485] | 228 | CplexMip(); |
---|
[484] | 229 | /// \e |
---|
[485] | 230 | CplexMip(const CplexEnv&); |
---|
[484] | 231 | /// \e |
---|
[485] | 232 | CplexMip(const CplexMip&); |
---|
[484] | 233 | /// \e |
---|
[485] | 234 | virtual ~CplexMip(); |
---|
[484] | 235 | |
---|
| 236 | protected: |
---|
| 237 | |
---|
[485] | 238 | virtual CplexMip* _cloneSolver() const; |
---|
| 239 | virtual CplexMip* _newSolver() const; |
---|
[484] | 240 | |
---|
| 241 | virtual const char* _solverName() const; |
---|
| 242 | |
---|
| 243 | virtual ColTypes _getColType(int col) const; |
---|
| 244 | virtual void _setColType(int col, ColTypes col_type); |
---|
| 245 | |
---|
| 246 | virtual SolveExitStatus _solve(); |
---|
| 247 | virtual ProblemType _getType() const; |
---|
| 248 | virtual Value _getSol(int i) const; |
---|
| 249 | virtual Value _getSolValue() const; |
---|
| 250 | |
---|
| 251 | }; |
---|
| 252 | |
---|
| 253 | } //END OF NAMESPACE LEMON |
---|
| 254 | |
---|
| 255 | #endif //LEMON_CPLEX_H |
---|
| 256 | |
---|