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-/* $Id: CbcFathom.hpp 1889 2013-04-07 13:46:46Z stefan $ */
-// Copyright (C) 2004, International Business Machines
-// Corporation and others. All Rights Reserved.
-// This code is licensed under the terms of the Eclipse Public License (EPL).
-
-#ifndef CbcFathom_H
-#define CbcFathom_H
-#include "CbcConfig.h"
-
-/*
- This file contains two classes, CbcFathom and CbcOsiSolver. It's unclear why
- they're in the same file. CbcOsiSolver is a base class for CbcLinked.
-
- --lh, 071031 --
-*/
-
-
-class CbcModel;
-
-//#############################################################################
-/** Fathom base class.
-
- The idea is that after some branching the problem will be effectively smaller than
- the original problem and maybe there will be a more specialized technique which can completely
- fathom this branch quickly.
-
- One method is to presolve the problem to give a much smaller new problem and then do branch
- and cut on that. Another might be dynamic programming.
-
- */
-
-class CbcFathom {
-public:
- // Default Constructor
- CbcFathom ();
-
- // Constructor with model - assumed before cuts
- CbcFathom (CbcModel & model);
-
- virtual ~CbcFathom();
-
- /// update model (This is needed if cliques update matrix etc)
- virtual void setModel(CbcModel * model);
-
- /// Clone
- virtual CbcFathom * clone() const = 0;
-
- /// Resets stuff if model changes
- virtual void resetModel(CbcModel * model) = 0;
-
- /** returns 0 if no fathoming attempted, 1 fully fathomed,
- 2 incomplete search, 3 incomplete search but treat as complete.
- If solution then newSolution will not be NULL and
- will be freed by CbcModel. It is expected that the solution is better
- than best so far but CbcModel will double check.
-
- If returns 3 then of course there is no guarantee of global optimum
- */
- virtual int fathom(double *& newSolution) = 0;
-
- // Is this method possible
- inline bool possible() const {
- return possible_;
- }
-
-protected:
-
- /// Model
- CbcModel * model_;
- /// Possible - if this method of fathoming can be used
- bool possible_;
-private:
-
- /// Illegal Assignment operator
- CbcFathom & operator=(const CbcFathom& rhs);
-
-};
-
-#include "OsiClpSolverInterface.hpp"
-
-//#############################################################################
-
-/**
-
-This is for codes where solver needs to know about CbcModel
- Seems to provide only one value-added feature, a CbcModel object.
-
-*/
-
-class CbcOsiSolver : public OsiClpSolverInterface {
-
-public:
-
- /**@name Constructors and destructors */
- //@{
- /// Default Constructor
- CbcOsiSolver ();
-
- /// Clone
- virtual OsiSolverInterface * clone(bool copyData = true) const;
-
- /// Copy constructor
- CbcOsiSolver (const CbcOsiSolver &);
-
- /// Assignment operator
- CbcOsiSolver & operator=(const CbcOsiSolver& rhs);
-
- /// Destructor
- virtual ~CbcOsiSolver ();
-
- //@}
-
-
- /**@name Sets and Gets */
- //@{
- /// Set Cbc Model
- inline void setCbcModel(CbcModel * model) {
- cbcModel_ = model;
- }
- /// Return Cbc Model
- inline CbcModel * cbcModel() const {
- return cbcModel_;
- }
- //@}
-
- //---------------------------------------------------------------------------
-
-protected:
-
-
- /**@name Private member data */
- //@{
- /// Pointer back to CbcModel
- CbcModel * cbcModel_;
- //@}
-};
-#endif