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+/* $Id: ClpDynamicExampleMatrix.hpp 1936 2013-04-09 10:29:27Z forrest $ */
+// 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 ClpDynamicExampleMatrix_H
+#define ClpDynamicExampleMatrix_H
+
+
+#include "CoinPragma.hpp"
+
+#include "ClpDynamicMatrix.hpp"
+class ClpSimplex;
+/** This implements a dynamic matrix when we have a limit on the number of
+    "interesting rows". This version inherits from ClpDynamicMatrix and knows that
+    the real matrix is gub.  This acts just like ClpDynamicMatrix but generates columns.
+    This "generates" columns by choosing from stored set.  It is maent as a starting point
+    as to how you could use shortest path to generate columns.
+
+    So it has its own copy of all data needed.  It populates ClpDynamicWatrix with enough
+    to allow for gub keys and active variables.  In turn ClpDynamicMatrix populates
+    a CoinPackedMatrix with active columns and rows.
+
+    As there is one copy here and one in ClpDynamicmatrix these names end in Gen_
+
+    It is obviously more efficient to just use ClpDynamicMatrix but the ideas is to
+    show how much code a user would have to write.
+
+    This does not work very well with bounds
+
+*/
+
+class ClpDynamicExampleMatrix : public ClpDynamicMatrix {
+
+public:
+     /**@name Main functions provided */
+     //@{
+     /// Partial pricing
+     virtual void partialPricing(ClpSimplex * model, double start, double end,
+                                 int & bestSequence, int & numberWanted);
+
+     /** Creates a variable.  This is called after partial pricing and will modify matrix.
+         Will update bestSequence.
+     */
+     virtual void createVariable(ClpSimplex * model, int & bestSequence);
+     /** If addColumn forces compression then this allows descendant to know what to do.
+         If >= then entry stayed in, if -1 then entry went out to lower bound.of zero.
+         Entries at upper bound (really nonzero) never go out (at present).
+     */
+     virtual void packDown(const int * in, int numberToPack);
+     //@}
+
+
+
+     /**@name Constructors, destructor */
+     //@{
+     /** Default constructor. */
+     ClpDynamicExampleMatrix();
+     /** This is the real constructor.
+         It assumes factorization frequency will not be changed.
+         This resizes model !!!!
+         The contents of original matrix in model will be taken over and original matrix
+         will be sanitized so can be deleted (to avoid a very small memory leak)
+      */
+     ClpDynamicExampleMatrix(ClpSimplex * model, int numberSets,
+                             int numberColumns, const int * starts,
+                             const double * lower, const double * upper,
+                             const int * startColumn, const int * row,
+                             const double * element, const double * cost,
+                             const double * columnLower = NULL, const double * columnUpper = NULL,
+                             const unsigned char * status = NULL,
+                             const unsigned char * dynamicStatus = NULL,
+                             int numberIds = 0, const int *ids = NULL);
+#if 0
+     /// This constructor just takes over ownership (except for lower, upper)
+     ClpDynamicExampleMatrix(ClpSimplex * model, int numberSets,
+                             int numberColumns, int * starts,
+                             const double * lower, const double * upper,
+                             int * startColumn, int * row,
+                             double * element, double * cost,
+                             double * columnLower = NULL, double * columnUpper = NULL,
+                             const unsigned char * status = NULL,
+                             const unsigned char * dynamicStatus = NULL,
+                             int numberIds = 0, const int *ids = NULL);
+#endif
+     /** Destructor */
+     virtual ~ClpDynamicExampleMatrix();
+     //@}
+
+     /**@name Copy method */
+     //@{
+     /** The copy constructor. */
+     ClpDynamicExampleMatrix(const ClpDynamicExampleMatrix&);
+     ClpDynamicExampleMatrix& operator=(const ClpDynamicExampleMatrix&);
+     /// Clone
+     virtual ClpMatrixBase * clone() const ;
+     //@}
+     /**@name gets and sets */
+     //@{
+     /// Starts of each column
+     inline CoinBigIndex * startColumnGen() const {
+          return startColumnGen_;
+     }
+     /// rows
+     inline int * rowGen() const {
+          return rowGen_;
+     }
+     /// elements
+     inline double * elementGen() const {
+          return elementGen_;
+     }
+     /// costs
+     inline double * costGen() const {
+          return costGen_;
+     }
+     /// full starts
+     inline int * fullStartGen() const {
+          return fullStartGen_;
+     }
+     /// ids in next level matrix
+     inline int * idGen() const {
+          return idGen_;
+     }
+     /// Optional lower bounds on columns
+     inline double * columnLowerGen() const {
+          return columnLowerGen_;
+     }
+     /// Optional upper bounds on columns
+     inline double * columnUpperGen() const {
+          return columnUpperGen_;
+     }
+     /// size
+     inline int numberColumns() const {
+          return numberColumns_;
+     }
+     inline void setDynamicStatusGen(int sequence, DynamicStatus status) {
+          unsigned char & st_byte = dynamicStatusGen_[sequence];
+          st_byte = static_cast<unsigned char>(st_byte & ~7);
+          st_byte = static_cast<unsigned char>(st_byte | status);
+     }
+     inline DynamicStatus getDynamicStatusGen(int sequence) const {
+          return static_cast<DynamicStatus> (dynamicStatusGen_[sequence] & 7);
+     }
+     /// Whether flagged
+     inline bool flaggedGen(int i) const {
+          return (dynamicStatusGen_[i] & 8) != 0;
+     }
+     inline void setFlaggedGen(int i) {
+          dynamicStatusGen_[i] = static_cast<unsigned char>(dynamicStatusGen_[i] | 8);
+     }
+     inline void unsetFlagged(int i) {
+          dynamicStatusGen_[i] = static_cast<unsigned char>(dynamicStatusGen_[i] & ~8);
+     }
+     //@}
+
+
+protected:
+     /**@name Data members
+        The data members are protected to allow access for derived classes. */
+     //@{
+     /// size
+     int numberColumns_;
+     /// Starts of each column
+     CoinBigIndex * startColumnGen_;
+     /// rows
+     int * rowGen_;
+     /// elements
+     double * elementGen_;
+     /// costs
+     double * costGen_;
+     /// start of each set
+     int * fullStartGen_;
+     /// for status and which bound
+     unsigned char * dynamicStatusGen_;
+     /** identifier for each variable up one level (startColumn_, etc).  This is
+         of length maximumGubColumns_.  For this version it is just sequence number
+         at this level */
+     int * idGen_;
+     /// Optional lower bounds on columns
+     double * columnLowerGen_;
+     /// Optional upper bounds on columns
+     double * columnUpperGen_;
+     //@}
+};
+
+#endif