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+// $Id: CglDuplicateRow.hpp 1119 2013-04-06 20:24:18Z 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 CglDuplicateRow_H
+#define CglDuplicateRow_H
+
+#include <string>
+
+#include "CglCutGenerator.hpp"
+class CglStored;
+
+/** DuplicateRow Cut Generator Class */
+class CglDuplicateRow : public CglCutGenerator {
+ 
+public:
+    
+  
+  /**@name Generate Cuts */
+  //@{
+  /** Fix variables and find duplicate/dominated rows for the model of the 
+      solver interface, si.
+
+      This is a very simple minded idea but I (JJF) am using it in a project so thought
+      I might as well add it.  It should really be called before first solve and I may
+      modify CBC to allow for that.
+
+      This is designed for problems with few rows and many integer variables where the rhs
+      are <= or == and all coefficients and rhs are small integers.
+
+      If effective rhs is K then we can fix all variables with coefficients > K to their lower bounds
+      (effective rhs just means original with variables with nonzero lower bounds subtracted out).
+
+      If one row is a subset of another and the effective rhs are same we can fix some variables
+      and then the two rows are identical.
+
+      The generator marks identical rows so can be taken out in solve
+  */
+  virtual void generateCuts( const OsiSolverInterface & si, OsiCuts & cs,
+			     const CglTreeInfo info = CglTreeInfo());
+private:
+  /// Does work for modes 1,2
+  void generateCuts12( const OsiSolverInterface & si, OsiCuts & cs,
+		       const CglTreeInfo info = CglTreeInfo());
+  /// Does work for mode 4
+  void generateCuts4( const OsiSolverInterface & si, OsiCuts & cs,
+		       const CglTreeInfo info = CglTreeInfo());
+  /// Does work for mode 8
+  void generateCuts8( const OsiSolverInterface & si, OsiCuts & cs,
+		       const CglTreeInfo info = CglTreeInfo());
+public:
+  /** Fix variables and find duplicate/dominated rows for the model of the 
+      solver interface, si.
+
+      This is a very simple minded idea but I (JJF) am using it in a project so thought
+      I might as well add it.  It should really be called before first solve and I may
+      modify CBC to allow for that.
+
+      This is designed for problems with few rows and many integer variables where the rhs
+      are <= or == and all coefficients and rhs are small integers.
+
+      If effective rhs is K then we can fix all variables with coefficients > K to their lower bounds
+      (effective rhs just means original with variables with nonzero lower bounds subtracted out).
+
+      If one row is a subset of another and the effective rhs are same we can fix some variables
+      and then the two rows are identical.
+
+      This version does deletions and fixings and may return stored cuts for
+      dominated columns 
+  */
+  CglStored * outDuplicates( OsiSolverInterface * solver);
+
+  //@}
+
+  /**@name Get information on size of problem */
+  //@{
+  /// Get duplicate row list, -1 means still in, -2 means out (all fixed), k>= means same as row k 
+  inline const int * duplicate() const
+  { return duplicate_;}
+  /// Size of dynamic program
+  inline int sizeDynamic() const
+  { return sizeDynamic_;}
+  /// Number of rows in original problem
+  inline int numberOriginalRows() const
+  { return matrix_.getNumRows();}
+  //@}
+
+  /**@name Get information on size of problem */
+  //@{
+  /// logLevel
+  inline int logLevel() const
+  { return logLevel_;}
+  inline void setLogLevel(int value)
+  { logLevel_ = value;}
+  //@}
+
+
+  /**@name We only check for duplicates amongst rows with effective rhs <= this */
+  //@{
+  /// Get
+  inline int maximumRhs() const
+  { return maximumRhs_;}
+  /// Set
+  inline void setMaximumRhs(int value)
+  { maximumRhs_=value;}
+  //@}
+
+  /**@name We only check for dominated amongst groups of columns whose size <= this */
+  //@{
+  /// Get
+  inline int maximumDominated() const
+  { return maximumDominated_;}
+  /// Set
+  inline void setMaximumDominated(int value)
+  { maximumDominated_=value;}
+  //@}
+  /**@name gets and sets */
+  //@{
+  /// Get mode
+  inline int mode() const
+  { return mode_;}
+  /// Set mode
+  inline void setMode(int value)
+  { mode_=value;}
+  //@}
+
+  /**@name Constructors and destructors */
+  //@{
+  /// Default constructor 
+  CglDuplicateRow ();
+ 
+  /// Useful constructor 
+  CglDuplicateRow (OsiSolverInterface * solver);
+ 
+  /// Copy constructor 
+  CglDuplicateRow (
+    const CglDuplicateRow & rhs);
+
+  /// Clone
+  virtual CglCutGenerator * clone() const;
+
+  /// Assignment operator 
+  CglDuplicateRow &
+    operator=(
+    const CglDuplicateRow& rhs);
+  
+  /// Destructor 
+  virtual
+    ~CglDuplicateRow ();
+  /// Create C++ lines to get to current state
+  virtual std::string generateCpp( FILE * fp);
+
+  /// This can be used to refresh any information
+  virtual void refreshSolver(OsiSolverInterface * solver);
+  //@}
+      
+protected:
+  
+
+  // Protected member data
+
+  /**@name Protected member data */
+  //@{
+  /// Matrix
+  CoinPackedMatrix matrix_;
+  /// Matrix by row
+  CoinPackedMatrix matrixByRow_; 
+  /// Possible rhs (if 0 then not possible)
+  int * rhs_;
+  /// Marks duplicate rows
+  int * duplicate_;
+  /// To allow for <= rows
+  int * lower_;
+  /// Stored cuts if we found dominance cuts
+  CglStored * storedCuts_;
+  /// Check dominated columns if less than this number of candidates
+  int maximumDominated_;
+  /// Check duplicates if effective rhs <= this
+  int maximumRhs_;
+  /// Size of dynamic program
+  int sizeDynamic_;
+  /// 1 do rows, 2 do columns, 3 do both
+  int mode_;
+  /// Controls print out
+  int logLevel_;
+  //@}
+};
+#endif