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// $Id: CbcCutSubsetModifier.hpp 1899 2013-04-09 18:12:08Z stefan $
// Copyright (C) 2003, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).

//Edwin 11/25/09 carved out of CbcCutGenerator

#ifndef CbcCutSubsetModifier_H
#define CbcCutSubsetModifier_H

#include "OsiSolverInterface.hpp"
#include "OsiCuts.hpp"
#include "CglCutGenerator.hpp"
#include "CbcCutModifier.hpp"

class CbcModel;
class OsiRowCut;
class OsiRowCutDebugger;
/** Simple cut modifier base class

    In exotic circumstances - cuts may need to be modified
    a) strengthened - changed
    b) weakened - changed
    c) deleted - set to NULL
    d) unchanged

    initially get rid of cuts with variables >= k
    could weaken
*/

class CbcCutSubsetModifier  : public CbcCutModifier {
public:
    /// Default Constructor
    CbcCutSubsetModifier ();

    /// Useful Constructor
    CbcCutSubsetModifier (int firstOdd);

    // Copy constructor
    CbcCutSubsetModifier ( const CbcCutSubsetModifier &);

    /// Destructor
    virtual ~CbcCutSubsetModifier();

    /// Assignment
    CbcCutSubsetModifier & operator=(const CbcCutSubsetModifier& rhs);
/// Clone
    virtual CbcCutModifier * clone() const ;

    /** Returns
        0 unchanged
        1 strengthened
        2 weakened
        3 deleted
    */
    virtual int modify(const OsiSolverInterface * solver, OsiRowCut & cut) ;
    /// Create C++ lines to get to current state
    virtual void generateCpp( FILE * ) {}
protected:
    /// data
    /// First odd variable
    int firstOdd_;
};

#endif //CbcCutSubsetModifier_H