Ifpack2_Factory_decl.hpp

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//       Ifpack2: Templated Object-Oriented Algebraic Preconditioner Package
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#ifndef IFPACK2_FACTORY_DECL_HPP
#define IFPACK2_FACTORY_DECL_HPP
 
#include "Ifpack2_ConfigDefs.hpp"
#include "Ifpack2_Preconditioner.hpp"
#include "Ifpack2_Details_Factory.hpp"
 
#include "Ifpack2_Chebyshev.hpp"
#include "Ifpack2_RILUK.hpp"
#include "Ifpack2_Experimental_RBILUK.hpp"
 
#include <type_traits>
 
namespace Ifpack2 {

bool supportsUnsymmetric (const std::string& prec_type);

class Factory {
public:
  template<class MatrixType>
  static
  Teuchos::RCP<Preconditioner<typename MatrixType::scalar_type,
                              typename MatrixType::local_ordinal_type,
                              typename MatrixType::global_ordinal_type,
                              typename MatrixType::node_type> >
  create (const std::string& precType,
          const Teuchos::RCP<const MatrixType>& matrix)
  {
    using Teuchos::RCP;
    using Teuchos::rcp_implicit_cast;
    typedef typename MatrixType::scalar_type SC;
    typedef typename MatrixType::local_ordinal_type LO;
    typedef typename MatrixType::global_ordinal_type GO;
    typedef typename MatrixType::node_type NT;
    typedef Tpetra::RowMatrix<SC, LO, GO, NT> row_matrix_type;
 
    RCP<const row_matrix_type> A;
    if (! matrix.is_null ()) {
      A = rcp_implicit_cast<const row_matrix_type> (matrix);
    }
    Ifpack2::Details::Factory<SC, LO, GO, NT> factory;
    return factory.create (precType, A);
  }

  template<class MatrixType>
  static
  Teuchos::RCP<Preconditioner<typename MatrixType::scalar_type,
                              typename MatrixType::local_ordinal_type,
                              typename MatrixType::global_ordinal_type,
                              typename MatrixType::node_type> >
  create (const std::string& precType,
          const Teuchos::RCP<const MatrixType>& matrix,
          const int overlap)
  {
    using Teuchos::RCP;
    using Teuchos::rcp_implicit_cast;
    typedef typename MatrixType::scalar_type SC;
    typedef typename MatrixType::local_ordinal_type LO;
    typedef typename MatrixType::global_ordinal_type GO;
    typedef typename MatrixType::node_type NT;
    typedef Tpetra::RowMatrix<SC, LO, GO, NT> row_matrix_type;
 
    RCP<const row_matrix_type> A;
    if (! matrix.is_null ()) {
      A = rcp_implicit_cast<const row_matrix_type> (matrix);
    }
    Ifpack2::Details::Factory<SC, LO, GO, NT> factory;
    return factory.create (precType, A, overlap);
  }
 
  template<class MatrixType>
  static
  bool
  isSupported (const std::string& precType)
  {
    typedef typename MatrixType::scalar_type SC;
    typedef typename MatrixType::local_ordinal_type LO;
    typedef typename MatrixType::global_ordinal_type GO;
    typedef typename MatrixType::node_type NT;
 
    Ifpack2::Details::Factory<SC, LO, GO, NT> factory;
    return factory.isSupported (precType);
  }
 
};
 
} // namespace Ifpack2
 
#endif // IFPACK2_FACTORY_DECL_HPP