CglCutGenerator.hpp

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// Copyright (C) 2000, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
 
#ifndef CglCutGenerator_H
#define CglCutGenerator_H
 
#include "OsiCuts.hpp"
#include "OsiSolverInterface.hpp"
#include "CglTreeInfo.hpp"
 
//-------------------------------------------------------------------
//
// Abstract base class for generating cuts.
//
//-------------------------------------------------------------------
 
class CglCutGenerator {
 
public:
  virtual void generateCuts(const OsiSolverInterface &si, OsiCuts &cs,
    const CglTreeInfo info = CglTreeInfo())
    = 0;
 
  CglCutGenerator();
 
  CglCutGenerator(const CglCutGenerator &);
 
  virtual CglCutGenerator *clone() const = 0;
 
  CglCutGenerator &operator=(const CglCutGenerator &rhs);
 
  virtual ~CglCutGenerator();
 
  virtual std::string generateCpp(FILE *) { return ""; }
 
  virtual void refreshSolver(OsiSolverInterface *) {}
 
  inline int getAggressiveness() const
  {
    return aggressive_;
  }
 
  inline void setAggressiveness(int value)
  {
    aggressive_ = value;
  }
  inline void setGlobalCuts(bool trueOrFalse)
  {
    canDoGlobalCuts_ = trueOrFalse;
  }
  inline bool canDoGlobalCuts() const
  {
    return canDoGlobalCuts_;
  }
  virtual bool mayGenerateRowCutsInTree() const;
  virtual bool needsOptimalBasis() const;
  virtual int maximumLengthOfCutInTree() const
  {
    return COIN_INT_MAX;
  }
 
  // test this class
  //static void unitTest();
 
  // private:
 
  int aggressive_;
  bool canDoGlobalCuts_;
};
 
#endif
 
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