MueLu_UzawaSmoother_decl.hpp

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/*
 * MueLu_UzawaSmoother_decl.hpp
 *
 *  Created on: 13 May 2014
 *      Author: wiesner
 */

#ifndef MUELU_UZAWASMOOTHER_DECL_HPP_
#define MUELU_UZAWASMOOTHER_DECL_HPP_


#include "MueLu_ConfigDefs.hpp"

#include <Teuchos_ParameterList.hpp>

//Xpetra
#include <Xpetra_MapExtractor_fwd.hpp>
#include <Xpetra_MultiVectorFactory_fwd.hpp>
#include <Xpetra_CrsMatrixWrap_fwd.hpp>
#include <Xpetra_Matrix_fwd.hpp>

//MueLu
#include "MueLu_UzawaSmoother_fwd.hpp"
#include "MueLu_SmootherPrototype.hpp"
#include "MueLu_FactoryBase_fwd.hpp"
#include "MueLu_FactoryManagerBase_fwd.hpp"
#include "MueLu_SmootherBase_fwd.hpp"
#include "MueLu_SubBlockAFactory_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"

#include "MueLu_SchurComplementFactory_fwd.hpp"
#include "MueLu_DirectSolver_fwd.hpp"
#include "MueLu_SmootherFactory_fwd.hpp"
#include "MueLu_FactoryManager_fwd.hpp"

namespace MueLu {

  template <class Scalar = SmootherPrototype<>::scalar_type,
            class LocalOrdinal = typename SmootherPrototype<Scalar>::local_ordinal_type,
            class GlobalOrdinal = typename SmootherPrototype<Scalar, LocalOrdinal>::global_ordinal_type,
            class Node = typename SmootherPrototype<Scalar, LocalOrdinal, GlobalOrdinal>::node_type>
  class UzawaSmoother : public SmootherPrototype<Scalar,LocalOrdinal,GlobalOrdinal,Node>
  {
    typedef Xpetra::MapExtractor<Scalar, LocalOrdinal, GlobalOrdinal, Node> MapExtractorClass;

#undef MUELU_UZAWASMOOTHER_SHORT
#include "MueLu_UseShortNames.hpp"

  public:



    UzawaSmoother();

    virtual ~UzawaSmoother();



    RCP<const ParameterList> GetValidParameterList() const;

    void DeclareInput(Level &currentLevel) const;

    void SetVelocityPredictionFactoryManager(RCP<FactoryManager> FactManager);

    void SetSchurCompFactoryManager(RCP<FactoryManager> FactManager);

    void AddFactoryManager(RCP<const FactoryManagerBase> FactManager, int pos);




    void Setup(Level &currentLevel);

    void Apply(MultiVector &X, MultiVector const &B, bool InitialGuessIsZero = false) const;

    RCP<SmootherPrototype> Copy() const;



    std::string description() const;

    //using MueLu::Describable::describe; // overloading, not hiding
    void print(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;

    size_t getNodeSmootherComplexity() const;


  private:

    std::string type_;

    RCP<const FactoryBase>                AFact_;           

    RCP<Matrix>                         A_;               // < ! internal blocked operator "A" generated by AFact_

    RCP<const MapExtractorClass>          rangeMapExtractor_;  
    RCP<const MapExtractorClass>          domainMapExtractor_; 

    Teuchos::RCP<Vector>                  diagFinv_;                      
    Teuchos::RCP<Matrix>                  F_;                             
    Teuchos::RCP<Matrix>                  G_;                             
    Teuchos::RCP<Matrix>                  D_;                             
    Teuchos::RCP<Matrix>                  Z_;                             

    Teuchos::RCP<SmootherBase>            velPredictSmoo_;              
    Teuchos::RCP<SmootherBase>            schurCompSmoo_;               


    std::vector<Teuchos::RCP<const FactoryManagerBase> > FactManager_;

  }; // class UzawaSmoother

} // namespace MueLu

#define MUELU_UZAWASMOOTHER_SHORT

#endif /* MUELU_UZAWASMOOTHER_DECL_HPP_ */