Teko_EpetraOperatorWrapper.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_EpetraOperatorWrapper_hpp__
#define __Teko_EpetraOperatorWrapper_hpp__
 
#include "Thyra_LinearOpBase.hpp"
#include "Epetra_Map.h"
#include "Epetra_Comm.h"
#include "Epetra_MultiVector.h"
#include "Epetra_Operator.h"
 
#include <string>
 
 
namespace Teko {
namespace Epetra {
  using Teuchos::RCP;
 
  class EpetraOperatorWrapper;
 
  class MappingStrategy {
  public:
     virtual ~MappingStrategy() {}
 
     virtual void copyEpetraIntoThyra(const Epetra_MultiVector& epetraX,
                                      const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyraX) const = 0;
                                      // const EpetraOperatorWrapper & eow) const = 0;
 
     virtual void copyThyraIntoEpetra(const RCP<const Thyra::MultiVectorBase<double> > & thyraX,
                                      Epetra_MultiVector& epetraX) const = 0;
                                      // const EpetraOperatorWrapper & eow) const = 0;
 
     virtual const RCP<const Epetra_Map> domainMap() const = 0;
 
     virtual const RCP<const Epetra_Map> rangeMap() const = 0;
 
     virtual std::string toString() const = 0;
  };
 
  class InverseMappingStrategy : public MappingStrategy {
  public:
     InverseMappingStrategy(const RCP<const MappingStrategy> & forward)
        : forwardStrategy_(forward)
     { }
 
     virtual ~InverseMappingStrategy() {}
 
     virtual void copyEpetraIntoThyra(const Epetra_MultiVector& epetraX,
                                      const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyraX) const
                                      // const EpetraOperatorWrapper & eow) const
     { forwardStrategy_->copyEpetraIntoThyra(epetraX,thyraX); }
 
     virtual void copyThyraIntoEpetra(const RCP<const Thyra::MultiVectorBase<double> > & thyraX,
                                      Epetra_MultiVector& epetraX) const
                                      // const EpetraOperatorWrapper & eow) const
     { forwardStrategy_->copyThyraIntoEpetra(thyraX,epetraX); }
 
     virtual const RCP<const Epetra_Map> domainMap() const
     { return forwardStrategy_->rangeMap(); }
 
     virtual const RCP<const Epetra_Map> rangeMap() const
     { return forwardStrategy_->domainMap(); }
 
     virtual std::string toString() const
     { return std::string("InverseMapping(")+forwardStrategy_->toString()+std::string(")"); }
  protected:
     const RCP<const MappingStrategy> forwardStrategy_;
 
  private:
     InverseMappingStrategy();
     InverseMappingStrategy(const InverseMappingStrategy &);
  };
 
  class DefaultMappingStrategy : public MappingStrategy {
  public:
     DefaultMappingStrategy(const RCP<const Thyra::LinearOpBase<double> > & thyraOp,const Epetra_Comm & comm);
 
     virtual ~DefaultMappingStrategy() {}
 
     virtual void copyEpetraIntoThyra(const Epetra_MultiVector& epetraX,
                                      const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyraX) const;
                                      // const EpetraOperatorWrapper & eow) const;
 
     virtual void copyThyraIntoEpetra(const RCP<const Thyra::MultiVectorBase<double> > & thyraX,
                                      Epetra_MultiVector& epetraX) const;
                                      // const EpetraOperatorWrapper & eow) const;
 
     virtual const RCP<const Epetra_Map> domainMap() const { return domainMap_; }
 
     virtual const RCP<const Epetra_Map> rangeMap() const { return rangeMap_; }
 
     virtual std::string toString() const
     { return std::string("DefaultMappingStrategy"); }
 
  protected:
     RCP<const Thyra::VectorSpaceBase<double> > domainSpace_; 
     RCP<const Thyra::VectorSpaceBase<double> > rangeSpace_; 
 
     RCP<const Epetra_Map> domainMap_; 
     RCP<const Epetra_Map> rangeMap_; 
  };
 
  class EpetraOperatorWrapper : public Epetra_Operator
  {
  public:
    EpetraOperatorWrapper(const RCP<const Thyra::LinearOpBase<double> > & thyraOp);
    EpetraOperatorWrapper(const RCP<const Thyra::LinearOpBase<double> > & thyraOp,
                          const RCP<const MappingStrategy> & mapStrategy);
    EpetraOperatorWrapper(const RCP<const MappingStrategy> & mapStrategy);
 
    virtual ~EpetraOperatorWrapper() {;}
 
    int SetUseTranspose(bool useTranspose) {
      useTranspose_ = useTranspose;
      return 0;
    }
 
    int Apply(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;
 
    int ApplyInverse(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;
 
    double NormInf() const ;
 
    const char* Label() const {return label_.c_str();}
 
    bool UseTranspose() const {return useTranspose_;}
 
    bool HasNormInf() const {return false;}
 
    const Epetra_Comm & Comm() const {return *comm_;}
 
    const Epetra_Map& OperatorDomainMap() const {return *mapStrategy_->domainMap();}
 
    const Epetra_Map& OperatorRangeMap() const {return *mapStrategy_->rangeMap();}
 
    const RCP<const Thyra::LinearOpBase<double> > getThyraOp() const
    { return thyraOp_; }
 
    const RCP<const MappingStrategy> getMapStrategy() const
    { return mapStrategy_; }
 
    virtual int GetBlockRowCount();
 
    virtual int GetBlockColCount();
 
    Teuchos::RCP<const Epetra_Operator> GetBlock(int i,int j) const;
 
  protected:
    EpetraOperatorWrapper();
 
    RCP<const Epetra_Comm> getEpetraComm(const Thyra::LinearOpBase<double> & inOp) const;
 
    void SetOperator(const RCP<const Thyra::LinearOpBase<double> > & thyraOp,bool buildMap=true);
 
    void SetMapStrategy(const RCP<const MappingStrategy> & mapStrategy)
    { mapStrategy_ = mapStrategy; }
 
    RCP<const MappingStrategy> mapStrategy_;
 
    RCP<const Thyra::LinearOpBase<double> > thyraOp_;
 
    bool useTranspose_;
 
    RCP<const Epetra_Comm> comm_;
 
    std::string label_;
  };
} // end namespace Epetra
} // end namespace Teko
 
#endif