Ifpack_Graph_Epetra_RowMatrix.h

/*@HEADER
// ***********************************************************************
//
//       Ifpack: Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2002) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/

#ifndef IFPACK_GRAPH_EPETRA_ROWMATRIX_H
#define IFPACK_GRAPH_EPETRA_ROWMATRIX_H

#include "Ifpack_ConfigDefs.h"
#include "Ifpack_Graph.h"
#include "Teuchos_RefCountPtr.hpp"

class Epetra_Comm;
class Epetra_RowMatrix;


class Ifpack_Graph_Epetra_RowMatrix : public Ifpack_Graph {

public:
    
  Ifpack_Graph_Epetra_RowMatrix(const Teuchos::RefCountPtr<const Epetra_RowMatrix>& RowMatrix);

  virtual ~Ifpack_Graph_Epetra_RowMatrix() {};

  int NumMyRows() const
  {
    return(NumMyRows_);
  }

  int NumMyCols() const
  {
    return(NumMyCols_);
  }

  int NumGlobalRows() const
  {
    return(NumGlobalRows_);
  }

  int NumGlobalCols() const
  {
    return(NumGlobalCols_);
  }

  int MaxMyNumEntries() const
  {
    return(MaxNumIndices_);
  }

  int NumMyNonzeros() const;

  bool Filled() const;

  int GRID(int) const;

  int GCID(int) const;
  
  int LRID(int) const;

  int LCID(int) const;

  int ExtractMyRowCopy(int GlobalRow, int LenOfIndices, 
               int &NumIndices, int *Indices) const;

  const Epetra_Comm& Comm() const;  
  
  ostream& Print(std::ostream& os) const;

private:

  int NumMyRows_;
  int NumMyCols_;
  int NumGlobalRows_;
  int NumGlobalCols_;
  int MaxNumIndices_;
  Teuchos::RefCountPtr<const Epetra_RowMatrix> RowMatrix_;
  mutable std::vector<double> Values_;
};

#endif