Ifpack2_OverlappingPartitioner_decl.hpp

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Tempated Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2009) 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.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/

#ifndef IFPACK2_OVERLAPPINGPARTITIONER_DECL_HPP
#define IFPACK2_OVERLAPPINGPARTITIONER_DECL_HPP

#include "Ifpack2_ConfigDefs.hpp"
#include "Ifpack2_Partitioner.hpp"
#include "Tpetra_RowGraph.hpp"

namespace Ifpack2 {

template<class GraphType>
class OverlappingPartitioner : public Partitioner<GraphType> {
public:
  typedef typename GraphType::local_ordinal_type local_ordinal_type;
  typedef typename GraphType::global_ordinal_type global_ordinal_type;
  typedef typename GraphType::node_type node_type;
  typedef Tpetra::RowGraph<local_ordinal_type, global_ordinal_type, node_type> row_graph_type;

  OverlappingPartitioner (const Teuchos::RCP<const row_graph_type>& graph);

  virtual ~OverlappingPartitioner();

  int numLocalParts () const;

  int overlappingLevel() const;

  local_ordinal_type operator () (const local_ordinal_type MyRow) const;

  local_ordinal_type
  operator () (const local_ordinal_type i, const local_ordinal_type j) const;

  size_t numRowsInPart (const local_ordinal_type Part) const;

  void rowsInPart (const local_ordinal_type Part, Teuchos::ArrayRCP<local_ordinal_type>& List) const;

  virtual Teuchos::ArrayView<const local_ordinal_type> 
  nonOverlappingPartition () const;


  virtual void setParameters (Teuchos::ParameterList& List);


  virtual void setPartitionParameters (Teuchos::ParameterList& List) = 0;

  virtual void compute();

  virtual void computePartitions() = 0;

  virtual void computeOverlappingPartitions();
  
  virtual bool isComputed() const;

  virtual std::ostream& print(std::ostream& os) const;



  std::string description() const;

  void describe(Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const;

 
protected:

  int NumLocalParts_;

  Teuchos::Array<local_ordinal_type> Partition_; 

  Teuchos::Array<Teuchos::ArrayRCP<local_ordinal_type> > Parts_;

  Teuchos::RCP<const row_graph_type> Graph_;

  int OverlappingLevel_;

  bool IsComputed_;

  bool verbose_;
}; // class Ifpack2::OverlappingPartitioner

}// namespace Ifpack2

#endif // IFPACK2_OVERLAPPINGPARTITIONER_DECL_HPP