MueLu_NullspaceFactory_decl.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// 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
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER
#ifndef MUELU_NULLSPACEFACTORY_DECL_HPP
#define MUELU_NULLSPACEFACTORY_DECL_HPP

#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_VectorFactory_fwd.hpp>
#include <Xpetra_MultiVectorFactory_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"
#include "MueLu_SingleLevelFactoryBase.hpp"
#include "MueLu_NullspaceFactory_fwd.hpp"

#include "MueLu_Level_fwd.hpp"

namespace MueLu {

template <class Scalar = DefaultScalar,
          class LocalOrdinal = DefaultLocalOrdinal,
          class GlobalOrdinal = DefaultGlobalOrdinal,
          class Node = DefaultNode>
  class NullspaceFactory : public SingleLevelFactoryBase {
#undef MUELU_NULLSPACEFACTORY_SHORT
#include "MueLu_UseShortNames.hpp"

  public:



    NullspaceFactory(const std::string & nspName = "Nullspace") {
      SetParameter("Fine level nullspace", ParameterEntry(nspName));
    }

    virtual ~NullspaceFactory() { }




    RCP<const ParameterList> GetValidParameterList() const;

    void DeclareInput(Level &currentLevel) const;




    void Build(Level &currentLevel) const;


  private:
    void fillNullspaceVector(const RCP<BlockedMultiVector>& nsp, LocalOrdinal numPDEs) const;

  }; //class NullspaceFactory

} //namespace MueLu

#define MUELU_NULLSPACEFACTORY_SHORT
#endif // MUELU_NULLSPACEFACTORY_DECL_HPP