Thyra_DefaultMultipliedLinearOp_decl.hpp

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//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
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// 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.
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#ifndef THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP
#define THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP

#include "Thyra_MultipliedLinearOpBase.hpp"
#include "Thyra_SingleScalarLinearOpBase.hpp"
#include "Teuchos_ConstNonconstObjectContainer.hpp"
#include "Teuchos_Handleable.hpp"


namespace Thyra {


template<class Scalar>
class DefaultMultipliedLinearOp
  : virtual public MultipliedLinearOpBase<Scalar>,        // Public interface
    virtual protected SingleScalarLinearOpBase<Scalar>,   // Implementation detail
    virtual public Teuchos::Handleable<LinearOpBase<Scalar> >
{
public:

#ifdef THYRA_INJECT_USING_DECLARATIONS
  using SingleScalarLinearOpBase<Scalar>::apply;
#endif

  /* */
  TEUCHOS_GET_RCP(LinearOpBase<Scalar>);


  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 opSupported(EOpTransp M_trans) const;

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


public:



  DefaultMultipliedLinearOp(
    const int numOps_in,
    const RCP<LinearOpBase<Scalar> > Ops[]
    )
    {
      initialize(numOps_in, Ops);
    }

  DefaultMultipliedLinearOp(
    const int numOps_in,
    const RCP<const LinearOpBase<Scalar> > Ops[]
    )
    {
      initialize(numOps_in, Ops);
    }

  void initialize(
    const int numOps_in,
    const RCP<LinearOpBase<Scalar> > Ops[]
    )
    {
      initialize(Teuchos::arrayView(Ops, numOps_in));
    }

  void initialize(
    const int numOps_in,
    const RCP<const LinearOpBase<Scalar> > Ops[]
    )
    {
      initialize(Teuchos::arrayView(Ops, numOps_in));
    }


private:

  Array<Teuchos::ConstNonconstObjectContainer<LinearOpBase<Scalar> > > Ops_;

  void assertInitialized() const;
  void validateOps();
  void setupDefaultObjectLabel();

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

};


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


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 = ""
  );


// /////////////////////////////////
// Inline members


template<class Scalar>
inline
void DefaultMultipliedLinearOp<Scalar>::assertInitialized() const
{
#ifdef TEUCHOS_DEBUG
  TEST_FOR_EXCEPT( !( numOps() > 0 ) );
#endif
}


} // end namespace Thyra


#endif  // THYRA_DEFAULT_MULTIPLIED_LINEAR_OP_DECL_HPP

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