lemon/soplex.h
author Balazs Dezso <deba@inf.elte.hu>
Thu, 04 Mar 2010 15:20:59 +0100
changeset 951 41d7ac528c3a
parent 587 9db62975c32b
child 793 e4554cd6b2bf
child 1081 f1398882a928
permissions -rw-r--r--
Uniforming primal scale to 2 (#314)
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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_SOPLEX_H
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#define LEMON_SOPLEX_H
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///\file
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///\brief Header of the LEMON-SOPLEX 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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// Forward declaration
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namespace soplex {
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  class SoPlex;
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}
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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 SOPLEX solver
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  ///
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  /// This class implements an interface for the SoPlex LP solver.
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  /// The SoPlex library is an object oriented lp solver library
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  /// developed at the Konrad-Zuse-Zentrum für Informationstechnik
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  /// Berlin (ZIB). You can find detailed information about it at the
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  /// <tt>http://soplex.zib.de</tt> address.
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  class SoplexLp : public LpSolver {
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  private:
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    soplex::SoPlex* soplex;
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    std::vector<std::string> _col_names;
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    std::map<std::string, int> _col_names_ref;
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    std::vector<std::string> _row_names;
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    std::map<std::string, int> _row_names_ref;
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  private:
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    // these values cannot be retrieved element by element
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    mutable std::vector<Value> _primal_values;
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    mutable std::vector<Value> _dual_values;
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    mutable std::vector<Value> _primal_ray;
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    mutable std::vector<Value> _dual_ray;
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    void _clear_temporals();
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  public:
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    /// \e
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    SoplexLp();
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    /// \e
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    SoplexLp(const SoplexLp&);
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    /// \e
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    ~SoplexLp();
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    /// \e
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    virtual SoplexLp* newSolver() const;
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    /// \e
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    virtual SoplexLp* cloneSolver() const;
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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 b, ExprIterator e);
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    virtual void _getObjCoeffs(InsertIterator b) 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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    void _messageLevel(MessageLevel m);
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    void _applyMessageLevel();
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    int _message_level;
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  };
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} //END OF NAMESPACE LEMON
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#endif //LEMON_SOPLEX_H
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