Ifpack2_Factory_decl.hpp

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Templated 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_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