Thyra_DefaultMultipliedLinearOp_decl.hpp

// @HEADER
// *****************************************************************************
//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//
// Copyright 2004 NTESS and the Thyra contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP
#define THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP

#include "Thyra_MultipliedLinearOpBase.hpp"
#include "Teuchos_ConstNonconstObjectContainer.hpp"


namespace Thyra {


template<class Scalar>
class DefaultMultipliedLinearOp : virtual public MultipliedLinearOpBase<Scalar>
{
public:


  DefaultMultipliedLinearOp();

  void initialize(const ArrayView<const RCP<LinearOpBase<Scalar> > > &Ops);

  void initialize(const ArrayView<const RCP<const LinearOpBase<Scalar> > > &Ops );

  void uninitialize();



  int numOps() const;
  bool opIsConst(const int k) const;
  RCP<LinearOpBase<Scalar> > getNonconstOp(const int k);
  RCP<const LinearOpBase<Scalar> > getOp(const int k) const;



  RCP< const VectorSpaceBase<Scalar> > range() const;

  RCP< const VectorSpaceBase<Scalar> > domain() const;

  RCP<const LinearOpBase<Scalar> > clone() const;


                                                
  std::string description() const;

  void describe(
    Teuchos::FancyOStream &out,
    const Teuchos::EVerbosityLevel verbLevel
    ) const;


protected:


  bool opSupportedImpl(EOpTransp M_trans) const;

  void allocateVecs(const Ordinal dim) const;

  void applyImpl(
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &X,
    const Ptr<MultiVectorBase<Scalar> > &Y,
    const Scalar alpha,
    const Scalar beta
    ) const;


public:

private:

  Array<Teuchos::ConstNonconstObjectContainer<LinearOpBase<Scalar> > > Ops_;
  mutable std::vector<Teuchos::RCP<MultiVectorBase<Scalar> > > T_k_;

  inline void assertInitialized() const;
  inline std::string getClassName() const;
  inline Ordinal getRangeDim() const;
  inline Ordinal getDomainDim() const;

  void validateOps();
  void setupDefaultObjectLabel();

  // Not defined and not to be called
  DefaultMultipliedLinearOp(const DefaultMultipliedLinearOp&);
  DefaultMultipliedLinearOp& operator=(const DefaultMultipliedLinearOp&);

};


template<class Scalar>
inline
RCP<DefaultMultipliedLinearOp<Scalar> >
defaultMultipliedLinearOp()
{
  return Teuchos::rcp(new DefaultMultipliedLinearOp<Scalar>);
}


template<class Scalar>
RCP<DefaultMultipliedLinearOp<Scalar> >
defaultMultipliedLinearOp(const ArrayView<const RCP<LinearOpBase<Scalar> > > &Ops)
{
  RCP<DefaultMultipliedLinearOp<Scalar> > dmlo = defaultMultipliedLinearOp<Scalar>();
  dmlo->initialize(Ops);
  return dmlo;
}


template<class Scalar>
RCP<DefaultMultipliedLinearOp<Scalar> >
defaultMultipliedLinearOp(const ArrayView<const RCP<const LinearOpBase<Scalar> > > &Ops)
{
  RCP<DefaultMultipliedLinearOp<Scalar> > dmlo = defaultMultipliedLinearOp<Scalar>();
  dmlo->initialize(Ops);
  return dmlo;
}


template<class Scalar>
RCP<LinearOpBase<Scalar> >
nonconstMultiply(
  const RCP<LinearOpBase<Scalar> > &A,
  const RCP<LinearOpBase<Scalar> > &B,
  const std::string &M_label = ""
  );


template<class Scalar>
RCP<const LinearOpBase<Scalar> >
multiply(
  const RCP<const LinearOpBase<Scalar> > &A,
  const RCP<const LinearOpBase<Scalar> > &B,
  const std::string &M_label = ""
  );


template<class Scalar>
RCP<const LinearOpBase<Scalar> >
multiply(
  const RCP<const LinearOpBase<Scalar> > &A,
  const RCP<const LinearOpBase<Scalar> > &B,
  const RCP<const LinearOpBase<Scalar> > &C,
  const std::string &M_label = ""
  );


} // end namespace Thyra


#endif  // THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP