Tempus_StepperOperatorSplit_decl.hpp

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// @HEADER
// ****************************************************************************
//                Tempus: Copyright (2017) Sandia Corporation
//
// Distributed under BSD 3-clause license (See accompanying file Copyright.txt)
// ****************************************************************************
// @HEADER

#ifndef Tempus_StepperOperatorSplit_decl_hpp
#define Tempus_StepperOperatorSplit_decl_hpp

#include "Tempus_config.hpp"
#include "Tempus_Stepper.hpp"
#include "Tempus_StepperOperatorSplitAppAction.hpp"

namespace Tempus {

template<class Scalar>
class StepperOperatorSplit : virtual public Tempus::Stepper<Scalar>
{
public:

  StepperOperatorSplit();

  StepperOperatorSplit(
    std::vector<Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> > > appModels,
    std::vector<Teuchos::RCP<Stepper<Scalar> > > subStepperList,
    bool useFSAL,
    std::string ICConsistency,
    bool ICConsistencyCheck,
    int order,
    int orderMin,
    int orderMax,
    const Teuchos::RCP<StepperOperatorSplitAppAction<Scalar> >& stepperOSAppAction);


    virtual void setModel(
      const Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> >& appModel);

    virtual Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> > getModel() const;

    virtual void setSolver(
        Teuchos::RCP<Thyra::NonlinearSolverBase<Scalar> > solver);

    virtual Teuchos::RCP<Thyra::NonlinearSolverBase<Scalar> > getSolver() const
      { return Teuchos::null; }

    virtual void setAppAction(Teuchos::RCP<StepperOperatorSplitAppAction<Scalar> > appAction);

    virtual Teuchos::RCP<StepperOperatorSplitAppAction<Scalar> > getAppAction() const
    { return stepperOSAppAction_; }

    virtual void setTempState(Teuchos::RCP<Tempus::SolutionState<Scalar>> state)
      { tempState_ = state; }

    virtual void initialize();

    virtual void setInitialConditions (
      const Teuchos::RCP<SolutionHistory<Scalar> >& solutionHistory);

    virtual void takeStep(
      const Teuchos::RCP<SolutionHistory<Scalar> >& solutionHistory);

    virtual void setInitialGuess(
      Teuchos::RCP<const Thyra::VectorBase<Scalar> > /* initial_guess */){}

    virtual Teuchos::RCP<Tempus::StepperState<Scalar> > getDefaultStepperState();
    virtual Scalar getOrder()    const {return order_;}
    virtual Scalar getOrderMin() const {return orderMin_;}
    virtual Scalar getOrderMax() const {return orderMax_;}

    virtual Scalar getInitTimeStep(
        const Teuchos::RCP<SolutionHistory<Scalar> >& /* solutionHistory */) const
      {return Scalar(1.0e+99);}
    virtual void setOrder   (Scalar o) { order_ = o;}
    virtual void setOrderMin(Scalar o) { orderMin_ = o;}
    virtual void setOrderMax(Scalar o) { orderMax_ = o;}

    virtual bool isExplicit() const
    {
      bool isExplicit = false;
      typename std::vector<Teuchos::RCP<Stepper<Scalar> > >::const_iterator
        subStepperIter = subStepperList_.begin();
      for (; subStepperIter < subStepperList_.end(); subStepperIter++) {
        if ( (*subStepperIter)->isExplicit() ) isExplicit = true;
      }
      return isExplicit;
    }
    virtual bool isImplicit() const
    {
      bool isImplicit = false;
      typename std::vector<Teuchos::RCP<Stepper<Scalar> > >::const_iterator
        subStepperIter = subStepperList_.begin();
      for (; subStepperIter < subStepperList_.end(); subStepperIter++) {
        if ( (*subStepperIter)->isImplicit() ) isImplicit = true;
      }
      return isImplicit;
    }
    virtual bool isExplicitImplicit() const
      {return isExplicit() && isImplicit();}
    virtual bool isOneStepMethod()   const
    {
      bool isOneStepMethod = true;
      typename std::vector<Teuchos::RCP<Stepper<Scalar> > >::const_iterator
        subStepperIter = subStepperList_.begin();
      for (; subStepperIter < subStepperList_.end(); subStepperIter++) {
        if ( !(*subStepperIter)->isOneStepMethod() ) isOneStepMethod = false;
      }
      return isOneStepMethod;
    }
    virtual bool isMultiStepMethod() const {return !isOneStepMethod();}
    virtual void setUseFSAL(bool a) { this->useFSAL_ = a; this->isInitialized_ = false; }
    virtual OrderODE getOrderODE()   const {return FIRST_ORDER_ODE;}

  Teuchos::RCP<const Teuchos::ParameterList> getValidParameters() const;

  void createSubSteppers(
    std::vector<Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> > > appModels,
    Teuchos::RCP<Teuchos::ParameterList> pl);


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

  virtual bool isValidSetup(Teuchos::FancyOStream & out) const;

  virtual std::vector<Teuchos::RCP<Stepper<Scalar> > > getStepperList() const
    { return subStepperList_; }
  virtual void setStepperList(std::vector<Teuchos::RCP<Stepper<Scalar> > > sl)
    { subStepperList_ = sl; }

  virtual void addStepper(Teuchos::RCP<Stepper<Scalar> > stepper,
                          bool useFSAL = false);

  virtual void setSubStepperList(
    std::vector<Teuchos::RCP<Stepper<Scalar> > > subStepperList);

  virtual void clearSubStepperList() { subStepperList_.clear(); }

  virtual void setModels(
    std::vector<Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> > > appModels);

protected:

  Scalar order_;
  Scalar orderMin_;
  Scalar orderMax_;

  std::vector<Teuchos::RCP<Stepper<Scalar> > >         subStepperList_;
  Teuchos::RCP<SolutionHistory<Scalar> >               OpSpSolnHistory_;
  Teuchos::RCP<SolutionState<Scalar> >                 tempState_;
  Teuchos::RCP<StepperOperatorSplitAppAction<Scalar> > stepperOSAppAction_;

};


// ------------------------------------------------------------------------
template<class Scalar>
Teuchos::RCP<StepperOperatorSplit<Scalar> >
createStepperOperatorSplit(
  std::vector<Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> > > appModels,
  Teuchos::RCP<Teuchos::ParameterList> pl);


} // namespace Tempus

#endif // Tempus_StepperOperatorSplit_decl_hpp