Amesos2_MatrixAdapter_decl.hpp

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#ifndef AMESOS2_MATRIXADAPTER_DECL_HPP
#define AMESOS2_MATRIXADAPTER_DECL_HPP

#include "Amesos2_config.h"

#include <Teuchos_Comm.hpp>
#include <Teuchos_ArrayView.hpp>
#include <Teuchos_VerbosityLevel.hpp>
#include <Teuchos_FancyOStream.hpp>

#include <Tpetra_ConfigDefs.hpp>  // for global_size_t

// #include "Amesos2_ConcreteMatrixAdapter_decl.hpp"
#include "Amesos2_Util.hpp"
#include "Amesos2_MatrixTraits.hpp"

namespace Amesos2 {

  template <class M> class ConcreteMatrixAdapter;
  
  template < class Matrix >
  class MatrixAdapter {

  public:

    typedef typename MatrixTraits<Matrix>::scalar_t                 scalar_t;
    typedef typename MatrixTraits<Matrix>::local_ordinal_t   local_ordinal_t;
    typedef typename MatrixTraits<Matrix>::global_ordinal_t global_ordinal_t;
    typedef typename MatrixTraits<Matrix>::node_t                     node_t;
    typedef Tpetra::global_size_t                              global_size_t;

    typedef Matrix                                                  matrix_t;
    typedef MatrixAdapter<Matrix>                                       type;
    typedef ConcreteMatrixAdapter<Matrix>                          adapter_t;

    // template<typename S, typename GO, typename GS, typename Op>
    // friend class Util::get_cxs_helper<MatrixAdapter<Matrix>,S,GO,GS,Op>;
    // template<class M, typename S, typename GO, typename GS, typename Op>
    // friend class Util::get_cxs_helper;

    MatrixAdapter(Teuchos::RCP<Matrix> m);


    void getCrs(const Teuchos::ArrayView<scalar_t> nzval,
    const Teuchos::ArrayView<global_ordinal_t> colind,
    const Teuchos::ArrayView<global_size_t> rowptr,
    global_size_t& nnz,
    const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > rowmap,
    EStorage_Ordering ordering=ARBITRARY) const;

    void getCrs(const Teuchos::ArrayView<scalar_t> nzval,
    const Teuchos::ArrayView<global_ordinal_t> colind,
    const Teuchos::ArrayView<global_size_t> rowptr,
    global_size_t& nnz,
    EDistribution distribution,
    EStorage_Ordering ordering=ARBITRARY) const;

    void getCcs(const Teuchos::ArrayView<scalar_t> nzval,
    const Teuchos::ArrayView<global_ordinal_t> rowind,
    const Teuchos::ArrayView<global_size_t> colptr,
    global_size_t& nnz,
    const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > colmap,
    EStorage_Ordering ordering=ARBITRARY) const;

    void getCcs(const Teuchos::ArrayView<scalar_t> nzval,
    const Teuchos::ArrayView<global_ordinal_t> rowind,
    const Teuchos::ArrayView<global_size_t> colptr,
    global_size_t& nnz,
    EDistribution distribution,
    EStorage_Ordering ordering=ARBITRARY) const;


    const Teuchos::RCP<const Teuchos::Comm<int> > getComm() const
    {
      return comm_;
    }

    global_size_t getGlobalNumRows() const;

    global_size_t getGlobalNumCols() const;

    global_size_t getGlobalNNZ() const;

    size_t getLocalNumRows() const;

    size_t getLocalNumCols() const;

    size_t getLocalNNZ() const;

    Teuchos::RCP<const Tpetra::Map<local_ordinal_t,global_ordinal_t> >
    getRowMap() const {
      return row_map_;
    }

    Teuchos::RCP<const Tpetra::Map<local_ordinal_t,global_ordinal_t> >
    getColMap() const {
      return col_map_;
    }

    Teuchos::RCP<const type> get(const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > map) const;

    std::string description() const;

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


  private:

    void help_getCrs(const Teuchos::ArrayView<scalar_t> nzval,
         const Teuchos::ArrayView<global_ordinal_t> colind,
         const Teuchos::ArrayView<global_size_t> rowptr,
         global_size_t& nnz,
         const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > rowmap,
         EStorage_Ordering ordering,
         has_special_impl hsi) const;

    void help_getCrs(const Teuchos::ArrayView<scalar_t> nzval,
         const Teuchos::ArrayView<global_ordinal_t> colind,
         const Teuchos::ArrayView<global_size_t> rowptr,
         global_size_t& nnz,
         const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > rowmap,
         EStorage_Ordering ordering,
         no_special_impl nsi) const;

    void do_getCrs(const Teuchos::ArrayView<scalar_t> nzval,
       const Teuchos::ArrayView<global_ordinal_t> colind,
       const Teuchos::ArrayView<global_size_t> rowptr,
       global_size_t& nnz,
       const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > rowmap,
       EStorage_Ordering ordering,
       row_access ra) const;

    void do_getCrs(const Teuchos::ArrayView<scalar_t> nzval,
       const Teuchos::ArrayView<global_ordinal_t> colind,
       const Teuchos::ArrayView<global_size_t> rowptr,
       global_size_t& nnz,
       const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > rowmap,
       EStorage_Ordering ordering,
       col_access ca) const;

    void help_getCcs(const Teuchos::ArrayView<scalar_t> nzval,
         const Teuchos::ArrayView<global_ordinal_t> rowind,
         const Teuchos::ArrayView<global_size_t> colptr,
         global_size_t& nnz,
         const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > colmap,
         EStorage_Ordering ordering,
         has_special_impl hsi) const;

    void help_getCcs(const Teuchos::ArrayView<scalar_t> nzval,
         const Teuchos::ArrayView<global_ordinal_t> rowind,
         const Teuchos::ArrayView<global_size_t> colptr,
         global_size_t& nnz,
         const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > colmap,
         EStorage_Ordering ordering,
         no_special_impl nsi) const;

    void do_getCcs(const Teuchos::ArrayView<scalar_t> nzval,
       const Teuchos::ArrayView<global_ordinal_t> rowind,
       const Teuchos::ArrayView<global_size_t> colptr,
       global_size_t& nnz,
       const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > colmap,
       EStorage_Ordering ordering,
       row_access ra) const;

    void do_getCcs(const Teuchos::ArrayView<scalar_t> nzval,
       const Teuchos::ArrayView<global_ordinal_t> rowind,
       const Teuchos::ArrayView<global_size_t> colptr,
       global_size_t& nnz,
       const Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > colmap,
       EStorage_Ordering ordering,
       col_access ca) const;

  protected:
    // These methods will link to concrete implementations, and may
    // also be used by them

    void getGlobalRowCopy(global_ordinal_t row,
        const Teuchos::ArrayView<global_ordinal_t>& indices,
        const Teuchos::ArrayView<scalar_t>& vals,
        size_t& nnz) const;

    void getGlobalColCopy(global_ordinal_t col,
        const Teuchos::ArrayView<global_ordinal_t>& indices,
        const Teuchos::ArrayView<scalar_t>& vals,
        size_t& nnz) const;

    size_t getMaxRowNNZ() const;

    size_t getMaxColNNZ() const;

    size_t getGlobalRowNNZ(global_ordinal_t row) const;

    size_t getLocalRowNNZ(local_ordinal_t row) const;

    size_t getGlobalColNNZ(global_ordinal_t col) const;

    size_t getLocalColNNZ(local_ordinal_t col) const;

    bool isLocallyIndexed() const;

    bool isGloballyIndexed() const;

  protected:
    const Teuchos::RCP<const Matrix> mat_;

    // only need to be mutable for the initial assignment, is there
    // another way to do this?
    mutable Teuchos::RCP<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > row_map_;

    mutable Teuchos::RCP<const Tpetra::Map<local_ordinal_t,global_ordinal_t,node_t> > col_map_;

    mutable Teuchos::RCP<const Teuchos::Comm<int> > comm_;
    
  };        // end class MatrixAdapter


  // Factory creation method
  template <class Matrix>
  Teuchos::RCP<MatrixAdapter<Matrix> >
  createMatrixAdapter(Teuchos::RCP<Matrix> m);
    
  template <class Matrix>
  Teuchos::RCP<const MatrixAdapter<Matrix> >
  createConstMatrixAdapter(Teuchos::RCP<const Matrix> m);

} // end namespace Amesos2

#endif  // AMESOS2_MATRIXADAPTER_DECL_HPP