Panzer_ReadOnlyVector_GlobalEvaluationData.hpp

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// @HEADER
// *****************************************************************************
//           Panzer: A partial differential equation assembly
//       engine for strongly coupled complex multiphysics systems
//
// Copyright 2011 NTESS and the Panzer contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef   __Panzer_ReadOnlyVector_GlobalEvaluationData_hpp__
#define   __Panzer_ReadOnlyVector_GlobalEvaluationData_hpp__

// Panzer
#include "PanzerDiscFE_config.hpp"
#ifdef PANZER_HAVE_EPETRA_STACK
#include "Panzer_KokkosUtils_VectorToView.hpp"
#endif

#include "Panzer_GlobalEvaluationData.hpp"

// Teuchos
#include "Teuchos_RCP.hpp"

// Thyra
#include "Thyra_VectorBase.hpp"

namespace panzer {

class ReadOnlyVector_GlobalEvaluationData : public GlobalEvaluationData {
public:

  virtual ~ReadOnlyVector_GlobalEvaluationData() {}

  virtual bool isInitialized() const = 0;

  virtual void globalToGhost(int mem) = 0;

  virtual void ghostToGlobal(int /* mem */) {}

  virtual void setOwnedVector(const Teuchos::RCP<const Thyra::VectorBase<double> > & ownedVector) = 0;

  virtual Teuchos::RCP<const Thyra::VectorBase<double> > getOwnedVector() const = 0;

  virtual Teuchos::RCP<Thyra::VectorBase<double> > getGhostedVector() const = 0;

#ifdef PANZER_HAVE_EPETRA_STACK

  const double&
  operator[](
    const int& lid) const
  {
    if (lid < static_cast<int>(ownedView_.extent(0)))
      return ownedView_(lid);
    else // if (lid >= static_cast<int>(ownedView_.extent(0)))
      return ghostedView_(lid - ownedView_.extent(0));
  } // end of operator[]()

protected:

  typename panzer::kokkos_utils::VectorToViewTraits<const Epetra_Vector>::View
  ownedView_;

  typename panzer::kokkos_utils::VectorToViewTraits<Epetra_Vector>::View
  ghostedView_;
#endif

}; // end of class ReadOnlyVector_GlobalEvaluationData

} // end of namespace panzer

#endif // __Panzer_ReadOnlyVector_GlobalEvaluationData_hpp__