Ifpack2_OverlappingRowMatrix_decl.hpp

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#ifndef IFPACK2_OVERLAPPINGROWMATRIX_DECL_HPP
#define IFPACK2_OVERLAPPINGROWMATRIX_DECL_HPP

#include "Ifpack2_ConfigDefs.hpp"
#include "Tpetra_RowMatrix.hpp"
#include "Tpetra_CrsMatrix_decl.hpp" // only need the declaration here
#include "Tpetra_Import.hpp"
#include "Tpetra_Map.hpp"


namespace Ifpack2 {

template<class MatrixType>
class OverlappingRowMatrix :
    virtual public Tpetra::RowMatrix<typename MatrixType::scalar_type,
                                     typename MatrixType::local_ordinal_type,
                                     typename MatrixType::global_ordinal_type,
                                     typename MatrixType::node_type> {
public:

  typedef typename MatrixType::scalar_type scalar_type;
  typedef typename MatrixType::local_ordinal_type local_ordinal_type;
  typedef typename MatrixType::global_ordinal_type global_ordinal_type;
  typedef typename MatrixType::node_type node_type;
  typedef typename Teuchos::ScalarTraits<scalar_type>::magnitudeType magnitude_type;
  typedef Tpetra::RowMatrix<scalar_type, local_ordinal_type,
                            global_ordinal_type, node_type> row_matrix_type;



  OverlappingRowMatrix (const Teuchos::RCP<const row_matrix_type>& A,
                        const int overlapLevel);

  OverlappingRowMatrix (const Teuchos::RCP<const row_matrix_type>& A,
                        const int overlapLevel,
                        const int subdomainID);
  ~OverlappingRowMatrix ();




  virtual Teuchos::RCP<const Teuchos::Comm<int> > getComm() const;

  virtual Teuchos::RCP<node_type> getNode() const;

  virtual Teuchos::RCP<const Tpetra::Map<local_ordinal_type, global_ordinal_type, node_type> >
  getRowMap () const;

  virtual Teuchos::RCP<const Tpetra::Map<local_ordinal_type, global_ordinal_type, node_type> >
  getColMap () const;

  virtual Teuchos::RCP<const Tpetra::Map<local_ordinal_type, global_ordinal_type, node_type> >
  getDomainMap () const;

  virtual Teuchos::RCP<const Tpetra::Map<local_ordinal_type, global_ordinal_type, node_type> >
  getRangeMap () const;

  virtual Teuchos::RCP<const Tpetra::RowGraph<local_ordinal_type, global_ordinal_type, node_type> >
  getGraph () const;

  virtual global_size_t getGlobalNumRows () const;

  virtual global_size_t getGlobalNumCols () const;

  virtual size_t getNodeNumRows () const;

  virtual size_t getNodeNumCols () const;

  virtual global_ordinal_type getIndexBase () const;

  virtual global_size_t getGlobalNumEntries () const;

  virtual size_t getNodeNumEntries () const;

  virtual size_t getNumEntriesInGlobalRow (global_ordinal_type globalRow) const;

  virtual size_t getNumEntriesInLocalRow (local_ordinal_type localRow) const;

  virtual global_size_t getGlobalNumDiags () const;

  virtual size_t getNodeNumDiags () const;

  virtual size_t getGlobalMaxNumRowEntries () const;

  virtual size_t getNodeMaxNumRowEntries() const;

  virtual bool hasColMap() const;

  virtual bool isLowerTriangular() const;

  virtual bool isUpperTriangular() const;

  virtual bool isLocallyIndexed () const;

  virtual bool isGloballyIndexed () const;

  virtual bool isFillComplete() const;

  virtual bool supportsRowViews() const;





  virtual void
  getGlobalRowCopy (global_ordinal_type GlobalRow,
                    const Teuchos::ArrayView<global_ordinal_type> &Indices,
                    const Teuchos::ArrayView<scalar_type> &Values,
                    size_t &NumEntries) const;


  virtual void
  getLocalRowCopy (local_ordinal_type LocalRow,
                   const Teuchos::ArrayView<local_ordinal_type> &Indices,
                   const Teuchos::ArrayView<scalar_type> &Values,
                   size_t &NumEntries) const;


  virtual void
  getGlobalRowView (global_ordinal_type GlobalRow,
                    Teuchos::ArrayView<const global_ordinal_type> &indices,
                    Teuchos::ArrayView<const scalar_type> &values) const;


  virtual void
  getLocalRowView (local_ordinal_type LocalRow,
                   Teuchos::ArrayView<const local_ordinal_type> &indices,
                   Teuchos::ArrayView<const scalar_type> &values) const;


  virtual
  void getLocalDiagCopy (Tpetra::Vector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &diag) const;




  virtual void
  leftScale (const Tpetra::Vector<scalar_type, local_ordinal_type, global_ordinal_type, node_type>& x);

  virtual void
  rightScale (const Tpetra::Vector<scalar_type, local_ordinal_type, global_ordinal_type, node_type>& x);


  virtual typename Teuchos::ScalarTraits<scalar_type>::magnitudeType
  getFrobeniusNorm () const;


  virtual void
  apply (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &X,
         Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &Y,
         Teuchos::ETransp mode = Teuchos::NO_TRANS,
         scalar_type alpha = Teuchos::ScalarTraits<scalar_type>::one(),
         scalar_type beta = Teuchos::ScalarTraits<scalar_type>::zero()) const;

  virtual bool hasTransposeApply() const;

  virtual void
  importMultiVector (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &X,
                     Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &OvX,
                     Tpetra::CombineMode CM = Tpetra::INSERT);

  virtual void
  exportMultiVector (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &OvX,
                     Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> &X,
                     Tpetra::CombineMode CM = Tpetra::ADD);

  std::string description() const;

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

private:
  typedef Tpetra::Map<local_ordinal_type, global_ordinal_type, node_type> map_type;
  typedef Tpetra::Import<local_ordinal_type, global_ordinal_type, node_type> import_type;
  typedef Tpetra::Export<local_ordinal_type, global_ordinal_type, node_type> export_type;
  typedef Tpetra::RowGraph<local_ordinal_type, global_ordinal_type, node_type> row_graph_type;
  typedef Tpetra::CrsMatrix<scalar_type, local_ordinal_type, global_ordinal_type, node_type> crs_matrix_type;

  Teuchos::RCP<const row_matrix_type> A_;

  Tpetra::global_size_t NumGlobalRows_;
  Tpetra::global_size_t NumGlobalNonzeros_;
  size_t MaxNumEntries_;
  int OverlapLevel_;

  // Subcommunicator stuff
  bool UseSubComm_;
  int subdomainID_;

  // Wrapper matrix objects
  Teuchos::RCP<const map_type> RowMap_;
  Teuchos::RCP<const map_type> ColMap_;
  Teuchos::RCP<const import_type> Importer_;

  Teuchos::RCP<row_matrix_type> ExtMatrix_;
  Teuchos::RCP<map_type>        ExtMap_;
  Teuchos::RCP<import_type>     ExtImporter_;

  Teuchos::RCP<const row_graph_type> graph_;

  mutable Teuchos::Array<local_ordinal_type> Indices_;
  mutable Teuchos::Array<scalar_type> Values_;

}; // class OverlappingRowMatrix

} // namespace Ifpack2

#endif // IFPACK2_OVERLAPPINGROWMATRIX_DECL_HPP