Panzer_GatherTangent_Tpetra_decl.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_EVALUATOR_GATHER_TANGENT_TPETRA_DECL_HPP
#define PANZER_EVALUATOR_GATHER_TANGENT_TPETRA_DECL_HPP

#include "Phalanx_config.hpp"
#include "Phalanx_Evaluator_Macros.hpp"
#include "Phalanx_MDField.hpp"
#include "Phalanx_KokkosViewOfViews.hpp"

#include "Teuchos_ParameterList.hpp"

#include "PanzerDiscFE_config.hpp"
#include "Panzer_Dimension.hpp"
#include "Panzer_Traits.hpp"
#include "Panzer_CloneableEvaluator.hpp"
#include "Panzer_TpetraLinearObjContainer.hpp"

#include"Panzer_NodeType.hpp"

#include "Panzer_Evaluator_WithBaseImpl.hpp"

namespace panzer {

class GlobalIndexer; //forward declaration

template<typename EvalT,typename TRAITS,typename LO,typename GO,typename NodeT=panzer::TpetraNodeType>
class GatherTangent_Tpetra
  : public panzer::EvaluatorWithBaseImpl<TRAITS>,
    public PHX::EvaluatorDerived<EvalT, TRAITS>,
    public panzer::CloneableEvaluator  {
public:

  GatherTangent_Tpetra(const Teuchos::RCP<const panzer::GlobalIndexer> & indexer) :
     globalIndexer_(indexer) {}

  GatherTangent_Tpetra(const Teuchos::RCP<const panzer::GlobalIndexer> & indexer,
                        const Teuchos::ParameterList& p);

  void postRegistrationSetup(typename TRAITS::SetupData d,
                             PHX::FieldManager<TRAITS>& vm);

  void preEvaluate(typename TRAITS::PreEvalData d);

  void evaluateFields(typename TRAITS::EvalData d);

  virtual Teuchos::RCP<CloneableEvaluator> clone(const Teuchos::ParameterList & pl) const
  { return Teuchos::rcp(new GatherTangent_Tpetra<EvalT,TRAITS,LO,GO,NodeT>(globalIndexer_,pl)); }

  // for testing purposes
  const PHX::FieldTag & getFieldTag(int i) const
  { TEUCHOS_ASSERT(i < Teuchos::as<int>(gatherFields_.size())); return gatherFields_[i].fieldTag(); }

private:

  // We always use RealType for gathering as we never compute derivatives for this evaluator
  typedef typename panzer::Traits::RealType ScalarT;
  //typedef typename EvalT::ScalarT ScalarT;

  // maps the local (field,element,basis) triplet to a global ID
  // for scattering
  Teuchos::RCP<const panzer::GlobalIndexer> globalIndexer_;
  std::vector<int> fieldIds_; // field IDs needing mapping

  std::vector< PHX::MDField<ScalarT,Cell,NODE> > gatherFields_;
  PHX::ViewOfViews<1,PHX::View<ScalarT**>> gatherFieldsVoV_;

  Teuchos::RCP<std::vector<std::string> > indexerNames_;
  bool useTimeDerivativeSolutionVector_;
  std::string globalDataKey_; // what global data does this fill?

  Teuchos::RCP<const TpetraLinearObjContainer<double,LO,GO,NodeT> > tpetraContainer_;

  GatherTangent_Tpetra();
};

}

// **************************************************************
#endif