COIN-OR::LEMON - Graph Library

source: lemon/lemon/soplex.h @ 899:cc9e0c15d747

Last change on this file since 899:cc9e0c15d747 was 793:e4554cd6b2bf, checked in by Balazs Dezso <deba@…>, 10 years ago

Faster add row operation (#203)

One virtual function call instead of more

File size: 4.4 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    virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u);
88
89    virtual void _eraseCol(int i);
90    virtual void _eraseRow(int i);
91
92    virtual void _eraseColId(int i);
93    virtual void _eraseRowId(int i);
94
95    virtual void _getColName(int col, std::string& name) const;
96    virtual void _setColName(int col, const std::string& name);
97    virtual int _colByName(const std::string& name) const;
98
99    virtual void _getRowName(int row, std::string& name) const;
100    virtual void _setRowName(int row, const std::string& name);
101    virtual int _rowByName(const std::string& name) const;
102
103    virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e);
104    virtual void _getRowCoeffs(int i, InsertIterator b) const;
105
106    virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e);
107    virtual void _getColCoeffs(int i, InsertIterator b) const;
108
109    virtual void _setCoeff(int row, int col, Value value);
110    virtual Value _getCoeff(int row, int col) const;
111
112    virtual void _setColLowerBound(int i, Value value);
113    virtual Value _getColLowerBound(int i) const;
114    virtual void _setColUpperBound(int i, Value value);
115    virtual Value _getColUpperBound(int i) const;
116
117    virtual void _setRowLowerBound(int i, Value value);
118    virtual Value _getRowLowerBound(int i) const;
119    virtual void _setRowUpperBound(int i, Value value);
120    virtual Value _getRowUpperBound(int i) const;
121
122    virtual void _setObjCoeffs(ExprIterator b, ExprIterator e);
123    virtual void _getObjCoeffs(InsertIterator b) const;
124
125    virtual void _setObjCoeff(int i, Value obj_coef);
126    virtual Value _getObjCoeff(int i) const;
127
128    virtual void _setSense(Sense sense);
129    virtual Sense _getSense() const;
130
131    virtual SolveExitStatus _solve();
132    virtual Value _getPrimal(int i) const;
133    virtual Value _getDual(int i) const;
134
135    virtual Value _getPrimalValue() const;
136
137    virtual Value _getPrimalRay(int i) const;
138    virtual Value _getDualRay(int i) const;
139
140    virtual VarStatus _getColStatus(int i) const;
141    virtual VarStatus _getRowStatus(int i) const;
142
143    virtual ProblemType _getPrimalType() const;
144    virtual ProblemType _getDualType() const;
145
146    virtual void _clear();
147
148    void _messageLevel(MessageLevel m);
149    void _applyMessageLevel();
150
151    int _message_level;
152
153  };
154
155} //END OF NAMESPACE LEMON
156
157#endif //LEMON_SOPLEX_H
158
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