COIN-OR::LEMON - Graph Library

source: lemon-1.2/lemon/soplex.h @ 894:bb70ad62c95f

Last change on this file since 894:bb70ad62c95f was 576:745e182d0139, checked in by Balazs Dezso <deba@…>, 11 years ago

Unified message handling for LP and MIP solvers (#9)

File size: 4.3 KB
Line 
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_SOPLEX_H
20#define LEMON_SOPLEX_H
21
22///\file
23///\brief Header of the LEMON-SOPLEX lp solver interface.
24
25#include <vector>
26#include <string>
27
28#include <lemon/lp_base.h>
29
30// Forward declaration
31namespace soplex {
32  class SoPlex;
33}
34
35namespace lemon {
36
37  /// \ingroup lp_group
38  ///
39  /// \brief Interface for the SOPLEX solver
40  ///
41  /// This class implements an interface for the SoPlex LP solver.
42  /// The SoPlex library is an object oriented lp solver library
43  /// developed at the Konrad-Zuse-Zentrum für Informationstechnik
44  /// Berlin (ZIB). You can find detailed information about it at the
45  /// <tt>http://soplex.zib.de</tt> address.
46  class SoplexLp : public LpSolver {
47  private:
48
49    soplex::SoPlex* soplex;
50
51    std::vector<std::string> _col_names;
52    std::map<std::string, int> _col_names_ref;
53
54    std::vector<std::string> _row_names;
55    std::map<std::string, int> _row_names_ref;
56
57  private:
58
59    // these values cannot be retrieved element by element
60    mutable std::vector<Value> _primal_values;
61    mutable std::vector<Value> _dual_values;
62
63    mutable std::vector<Value> _primal_ray;
64    mutable std::vector<Value> _dual_ray;
65
66    void _clear_temporals();
67
68  public:
69
70    /// \e
71    SoplexLp();
72    /// \e
73    SoplexLp(const SoplexLp&);
74    /// \e
75    ~SoplexLp();
76    /// \e
77    virtual SoplexLp* newSolver() const;
78    /// \e
79    virtual SoplexLp* cloneSolver() const;
80
81  protected:
82
83    virtual const char* _solverName() const;
84
85    virtual int _addCol();
86    virtual int _addRow();
87
88    virtual void _eraseCol(int i);
89    virtual void _eraseRow(int i);
90
91    virtual void _eraseColId(int i);
92    virtual void _eraseRowId(int i);
93
94    virtual void _getColName(int col, std::string& name) const;
95    virtual void _setColName(int col, const std::string& name);
96    virtual int _colByName(const std::string& name) const;
97
98    virtual void _getRowName(int row, std::string& name) const;
99    virtual void _setRowName(int row, const std::string& name);
100    virtual int _rowByName(const std::string& name) const;
101
102    virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);
103    virtual void _getRowCoeffs(int i, InsertIterator b) const;
104
105    virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);
106    virtual void _getColCoeffs(int i, InsertIterator b) const;
107
108    virtual void _setCoeff(int row, int col, Value value);
109    virtual Value _getCoeff(int row, int col) const;
110
111    virtual void _setColLowerBound(int i, Value value);
112    virtual Value _getColLowerBound(int i) const;
113    virtual void _setColUpperBound(int i, Value value);
114    virtual Value _getColUpperBound(int i) const;
115
116    virtual void _setRowLowerBound(int i, Value value);
117    virtual Value _getRowLowerBound(int i) const;
118    virtual void _setRowUpperBound(int i, Value value);
119    virtual Value _getRowUpperBound(int i) const;
120
121    virtual void _setObjCoeffs(ExprIterator b, ExprIterator e);
122    virtual void _getObjCoeffs(InsertIterator b) const;
123
124    virtual void _setObjCoeff(int i, Value obj_coef);
125    virtual Value _getObjCoeff(int i) const;
126
127    virtual void _setSense(Sense sense);
128    virtual Sense _getSense() const;
129
130    virtual SolveExitStatus _solve();
131    virtual Value _getPrimal(int i) const;
132    virtual Value _getDual(int i) const;
133
134    virtual Value _getPrimalValue() const;
135
136    virtual Value _getPrimalRay(int i) const;
137    virtual Value _getDualRay(int i) const;
138
139    virtual VarStatus _getColStatus(int i) const;
140    virtual VarStatus _getRowStatus(int i) const;
141
142    virtual ProblemType _getPrimalType() const;
143    virtual ProblemType _getDualType() const;
144
145    virtual void _clear();
146
147    void _messageLevel(MessageLevel m);
148    void _applyMessageLevel();
149
150    int _message_level;
151
152  };
153
154} //END OF NAMESPACE LEMON
155
156#endif //LEMON_SOPLEX_H
157
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