Teko_StridedMappingStrategy.hpp

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//      Teko: A package for block and physics based preconditioning
//                  Copyright 2010 Sandia Corporation 
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#ifndef __Teko_StridedMappingStrategy_hpp__
#define __Teko_StridedMappingStrategy_hpp__

// stl includes
#include <vector>

// Teuchos includes
#include "Teuchos_RCP.hpp"

// Thyra includes
#include "Thyra_MultiVectorBase.hpp"
#include "Thyra_LinearOpBase.hpp"
#include "Thyra_BlockedLinearOpBase.hpp"

// Epetra includes
#include "Epetra_Comm.h"
#include "Epetra_Map.h"
#include "Epetra_MultiVector.h"
#include "Epetra_Import.h"
#include "Epetra_Export.h"
#include "Epetra_CrsMatrix.h"

// Teko includes
#include "Teko_EpetraOperatorWrapper.hpp"

namespace Teko {
namespace Epetra {

class StridedMappingStrategy : public MappingStrategy {
public:


   StridedMappingStrategy(const std::vector<int> & vars,const Teuchos::RCP<const Epetra_Map> & map, const Epetra_Comm & comm);



   virtual void copyEpetraIntoThyra(const Epetra_MultiVector& epetra_X, 
                                    const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyra_X,
                                    const Teko::Epetra::EpetraOperatorWrapper & eow) const;

   virtual void copyThyraIntoEpetra(const Teuchos::RCP<const Thyra::MultiVectorBase<double> > & thyra_Y, 
                                    Epetra_MultiVector& epetra_Y,
                                    const Teko::Epetra::EpetraOperatorWrapper & eow) const;

   virtual const Teuchos::RCP<const Epetra_Map> domainMap() const
   { return domainMap_; }

   virtual const Teuchos::RCP<const Epetra_Map> rangeMap() const
   { return rangeMap_; }

   virtual std::string toString() const
   { return std::string("StridedMappingStrategy"); }
 



   void buildBlockTransferData(const std::vector<int> & vars,const Teuchos::RCP<const Epetra_Map> & baseMap, 
                               const Epetra_Comm & comm);

   const std::vector<std::pair<int,Teuchos::RCP<Epetra_Map> > > & getMaps() const
   { return blockMaps_; }

   const Teuchos::RCP<Thyra::BlockedLinearOpBase<double> > 
   buildBlockedThyraOp(const Teuchos::RCP<const Epetra_CrsMatrix> & mat,const std::string & label="<ANYM>") const;

   void rebuildBlockedThyraOp(const RCP<const Epetra_CrsMatrix> & mat,
                              const RCP<Thyra::BlockedLinearOpBase<double> > & A) const;


protected:
   // member variables


   Teuchos::RCP<const Epetra_Map> domainMap_; 
   Teuchos::RCP<const Epetra_Map> rangeMap_;


   std::vector<std::pair<int,Teuchos::RCP<Epetra_Map> > > blockMaps_;
   std::vector<Teuchos::RCP<Epetra_Export> > blockExport_;
   std::vector<Teuchos::RCP<Epetra_Import> > blockImport_;
};

} // end namespace Epetra
} // end namespace Teko

#endif