Ifpack_Graph.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_H
#define IFPACK_GRAPH_H
class Epetra_Comm;


class Ifpack_Graph {

public:
    
  virtual ~Ifpack_Graph() {};

  virtual int NumMyRows() const = 0;

  virtual int NumMyCols() const = 0;

  virtual int NumGlobalRows() const = 0;

  virtual int NumGlobalCols() const = 0;

  virtual int MaxMyNumEntries() const = 0;

  virtual int NumMyNonzeros() const = 0;

  virtual bool Filled() const = 0;

  virtual int GRID(int) const = 0;

  virtual int GCID(int) const = 0;
  
  virtual int LRID(int) const = 0;

  virtual int LCID(int) const = 0;

  virtual int ExtractMyRowCopy(int MyRow, int LenOfIndices, 
                   int &NumIndices, int *Indices) const = 0;

  virtual const Epetra_Comm& Comm() const = 0;

  virtual ostream& Print(std::ostream& os) const = 0;

};

inline ostream& operator<<(ostream& os, const Ifpack_Graph& obj)
{
  return(obj.Print(os));
}

#endif // iFPACK_GRAPH_H