Teko_StridedEpetraOperator.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_StridedEpetraOperator_hpp__
#define __Teko_StridedEpetraOperator_hpp__
 
// Epetra includes
#include "Epetra_Operator.h"
 
// Teuchos includes
#include "Teuchos_RCP.hpp"
 
#include "Thyra_LinearOpBase.hpp"
 
// Teko includes
#include "Teko_BlockedReordering.hpp"
#include "Teko_EpetraOperatorWrapper.hpp"
#include "Teko_StridedMappingStrategy.hpp"
 
namespace Teko {
namespace Epetra {
 
class StridedEpetraOperator : public EpetraOperatorWrapper {
public:
   enum eNormType { Inf, One, Frobenius};
 
   StridedEpetraOperator(int numVars,const Teuchos::RCP<const Epetra_Operator> & content,
                         const std::string & label="<ANYM>");
   StridedEpetraOperator(const std::vector<int> & vars,const Teuchos::RCP<const Epetra_Operator> & content,
                         const std::string & label="<ANYM>");
 
   virtual void SetContent(const std::vector<int> & vars,const Teuchos::RCP<const Epetra_Operator> & content);
 
   virtual void RebuildOps()
   { BuildBlockedOperator(); }
 
   virtual const Teuchos::RCP<const Epetra_Operator> GetContent() const
   { return fullContent_; }
 
   // virtual const Teuchos::RCP<Epetra_Operator> GetContent()
   // { return fullContent_; }
 
   const Teuchos::RCP<const Epetra_Operator> GetBlock(int i,int j) const;

   void Reorder(const BlockReorderManager & brm);

   void RemoveReording();

   virtual void WriteBlocks(const std::string & prefix) const;

   virtual std::string PrintNorm(const eNormType & nrmType=Frobenius,const char newline='\n');
 
   // functions overloading Epetra_Operator
 
   // destructor
   virtual ~StridedEpetraOperator() {}
 
   // attribute set methods
   
   // don't use transpose...ever!
   virtual int SetUseTranspose(bool /* useTranspose */)
   { return -1; }
 
   virtual int ApplyInverse(const Epetra_MultiVector &/* X */, Epetra_MultiVector &/* Y */) const
   { TEUCHOS_ASSERT(false); return -1; }
 
   virtual double NormInf() const
   { TEUCHOS_ASSERT(false); return 0.0; }
 
   // attribute access functions
   virtual bool UseTranspose() const { return false; }
   virtual bool HasNormInf() const { return false; }
   virtual const Epetra_Comm & Comm() const { return fullContent_->Comm(); }
 
   
   bool testAgainstFullOperator(int count,double tol) const;
 
protected:
   // gooey center of this shell
   Teuchos::RCP<const Epetra_Operator> fullContent_;
   Teuchos::RCP<StridedMappingStrategy> stridedMapping_;
   Teuchos::RCP<Thyra::LinearOpBase<double> > stridedOperator_;
   Teuchos::RCP<const BlockReorderManager> reorderManager_;
 
   std::string label_;
 
   void BuildBlockedOperator();
};
 
} // end namespace Epetra
} // end namespace Teko
 
#endif