Cbc  2.9.9
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
CglCutGenerator.hpp
Go to the documentation of this file.
1 // Copyright (C) 2000, International Business Machines
2 // Corporation and others. All Rights Reserved.
3 // This code is licensed under the terms of the Eclipse Public License (EPL).
4 
5 #ifndef CglCutGenerator_H
6 #define CglCutGenerator_H
7 
8 #include "OsiCuts.hpp"
9 #include "OsiSolverInterface.hpp"
10 #include "CglTreeInfo.hpp"
11 
12 //-------------------------------------------------------------------
13 //
14 // Abstract base class for generating cuts.
15 //
16 //-------------------------------------------------------------------
18 
24 
25 public:
26 
33  virtual void generateCuts( const OsiSolverInterface & si, OsiCuts & cs,
34  const CglTreeInfo info = CglTreeInfo())=0;
36 
37 
40  CglCutGenerator ();
42 
45 
47  virtual CglCutGenerator * clone() const = 0;
48 
51 
53  virtual ~CglCutGenerator ();
54 
65  virtual std::string generateCpp( FILE * ) {return "";}
66 
68  virtual void refreshSolver(OsiSolverInterface * ) {}
70 
77  inline int getAggressiveness() const
78  { return aggressive_;}
79 
84  inline void setAggressiveness(int value)
85  { aggressive_=value;}
87  inline void setGlobalCuts(bool trueOrFalse)
88  { canDoGlobalCuts_ = trueOrFalse;}
90  inline bool canDoGlobalCuts() const
91  {return canDoGlobalCuts_;}
99  virtual bool mayGenerateRowCutsInTree() const;
101  virtual bool needsOptimalBasis() const;
103  virtual int maximumLengthOfCutInTree() const
104  { return COIN_INT_MAX;}
106 
107  // test this class
108  //static void unitTest();
109 
110 // private:
111 
119 };
120 
121 #endif
virtual int maximumLengthOfCutInTree() const
Return maximum length of cut in tree.
int aggressive_
Aggressiveness - 0 = neutral, 100 is normal root node.
virtual bool mayGenerateRowCutsInTree() const
Returns true if may generate Row cuts in tree (rather than root node).
Information about where the cut generator is invoked from.
Definition: CglTreeInfo.hpp:15
Collections of row cuts and column cuts.
Definition: OsiCuts.hpp:19
Abstract Base Class for describing an interface to a solver.
bool canDoGlobalCuts() const
Say whether can do global cuts.
CglCutGenerator()
Default constructor.
Cut Generator Base Class.
int getAggressiveness() const
Get Aggressiveness - 0 = neutral, 100 is normal root node.
virtual void generateCuts(const OsiSolverInterface &si, OsiCuts &cs, const CglTreeInfo info=CglTreeInfo())=0
Generate cuts for the model data contained in si.
bool canDoGlobalCuts_
True if can do global cuts i.e. no general integers.
const int COIN_INT_MAX
Definition: CoinFinite.hpp:19
virtual void refreshSolver(OsiSolverInterface *)
This can be used to refresh any information.
virtual CglCutGenerator * clone() const =0
Clone.
virtual ~CglCutGenerator()
Destructor.
void setAggressiveness(int value)
Set Aggressiveness - 0 = neutral, 100 is normal root node.
virtual std::string generateCpp(FILE *)
Create C++ lines to set the generator in the current state.
CglCutGenerator & operator=(const CglCutGenerator &rhs)
Assignment operator.
void setGlobalCuts(bool trueOrFalse)
Set whether can do global cuts.
virtual bool needsOptimalBasis() const
Return true if needs optimal basis to do cuts.