Thyra_EpetraOperatorWrapper.hpp

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//              Meros: Segregated Preconditioning Package
//                 Copyright (2004) Sandia Corporation
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#ifndef THYRA_EPETRA_OPERATOR_WRAPPER_HPP
#define THYRA_EPETRA_OPERATOR_WRAPPER_HPP

#include "Thyra_LinearOpBase.hpp"
#include "Epetra_Map.h"
#include "Epetra_Comm.h"
#include "Epetra_MultiVector.h"
#include "Epetra_Operator.h"


namespace Thyra {


class EpetraOperatorWrapper : public Epetra_Operator
{
public:


  EpetraOperatorWrapper(const RCP<const LinearOpBase<double> > &thyraOp);

  void copyEpetraIntoThyra(const Epetra_MultiVector &x,
    const Ptr<VectorBase<double> > &thyraVec) const;

  void copyThyraIntoEpetra(const VectorBase<double> &thyraVec,
    Epetra_MultiVector &x) const;



  int SetUseTranspose(bool UseTranspose_in)
    {
      useTranspose_ = UseTranspose_in;
      return 0;
    }

  int Apply(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;

  int ApplyInverse(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;

  double NormInf() const ;

  const char* Label() const {return label_.c_str();}

  bool UseTranspose() const {return useTranspose_;}

  bool HasNormInf() const {return false;}
    
  const Epetra_Comm& Comm() const {return *comm_;}

  const Epetra_Map& OperatorDomainMap() const {return *domainMap_;}

  const Epetra_Map& OperatorRangeMap() const {return *rangeMap_;}


private:

  bool useTranspose_;
  RCP<const LinearOpBase<double> > thyraOp_;
  RCP<const VectorSpaceBase<double> > range_;
  RCP<const VectorSpaceBase<double> > domain_;
  RCP<const Epetra_Comm> comm_;
  RCP<const Epetra_Map> rangeMap_;
  RCP<const Epetra_Map> domainMap_;

  std::string label_;

  static RCP<const Epetra_Comm> getEpetraComm(const LinearOpBase<double>& thyraOp);

};


RCP<const LinearOpBase<double> > 
makeEpetraWrapper(const RCP<const LinearOpBase<double> > &thyraOp);


}  // namespace Thyra


#endif // THYRA_EPETRA_OPERATOR_WRAPPER_HPP