Thyra_NonlinearSolverBase.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_NONLINEAR_SOLVER_BASE_HPP
#define THYRA_NONLINEAR_SOLVER_BASE_HPP

#include "Thyra_LinearOpWithSolveBase.hpp"
#include "Thyra_ModelEvaluator.hpp"
#include "Teuchos_Describable.hpp"
#include "Teuchos_VerboseObject.hpp"
#include "Teuchos_ParameterListAcceptor.hpp"


namespace Thyra {


template <class Scalar>
class NonlinearSolverBase
  : virtual public Teuchos::Describable
  , virtual public Teuchos::VerboseObject<NonlinearSolverBase<Scalar> >
  , virtual public Teuchos::ParameterListAcceptor
{
public:
  

  virtual void setModel(
    const RCP<const ModelEvaluator<Scalar> > &model
    ) = 0;
  
  virtual RCP<const ModelEvaluator<Scalar> > getModel() const = 0;
  
  virtual SolveStatus<Scalar> solve(
    VectorBase<Scalar> *x,
    const SolveCriteria<Scalar> *solveCriteria = NULL,
    VectorBase<Scalar> *delta = NULL
    ) = 0;
  
  

  virtual bool supportsCloning() const;

  virtual RCP<NonlinearSolverBase<Scalar> > cloneNonlinearSolver() const;
  
  virtual RCP<const VectorBase<Scalar> > get_current_x() const;

  virtual bool is_W_current() const;

  virtual RCP<LinearOpWithSolveBase<Scalar> >
  get_nonconst_W( const bool forceUpToDate = false );

  virtual RCP<const LinearOpWithSolveBase<Scalar> > get_W() const;

  virtual void set_W_is_current(bool W_is_current);


private:
  
  // Not defined and not to be called
  NonlinearSolverBase<Scalar>&
  operator=(const NonlinearSolverBase<Scalar>&);

};


template <class Scalar>
const SolveStatus<Scalar> solve(
  NonlinearSolverBase<Scalar> &nonlinearSolver,
    VectorBase<Scalar> *x,
    const SolveCriteria<Scalar> *solveCriteria = NULL,
    VectorBase<Scalar> *delta = NULL
    )
{
  return nonlinearSolver.solve(x,solveCriteria,delta);
}


// ///////////////////////////////
// Implementations

template <class Scalar>
bool NonlinearSolverBase<Scalar>::supportsCloning() const
{
  return false;
}

template <class Scalar>
RCP<NonlinearSolverBase<Scalar> >
NonlinearSolverBase<Scalar>::cloneNonlinearSolver() const
{
  return Teuchos::null;
}

template <class Scalar>
RCP<const VectorBase<Scalar> >
NonlinearSolverBase<Scalar>::get_current_x() const
{
  return Teuchos::null;
}

template <class Scalar>
bool NonlinearSolverBase<Scalar>::is_W_current() const
{
  return false;
}

template <class Scalar>
RCP<LinearOpWithSolveBase<Scalar> >
NonlinearSolverBase<Scalar>::get_nonconst_W(const bool forceUpToDate)
{
  return Teuchos::null;
}

template <class Scalar>
RCP<const LinearOpWithSolveBase<Scalar> >
NonlinearSolverBase<Scalar>::get_W() const
{
  return Teuchos::null;
}

template <class Scalar>
void NonlinearSolverBase<Scalar>::set_W_is_current(bool W_is_current)
{
  TEUCHOS_TEST_FOR_EXCEPTION(
    true, std::logic_error,
    "Error, the subclass object described as " << this->description() << " did not"
    " override this function!"
    );
}


} // namespace Thyra


#endif // THYRA_NONLINEAR_SOLVER_BASE_HPP