Ifpack_ReorderFilter.h

#ifndef IFPACK_REORDERFILTER_H
#define IFPACK_REORDERFILTER_H

#include "Ifpack_ConfigDefs.h"
#include "Epetra_RowMatrix.h"
class Epetra_Comm;
class Epetra_Map;
class Epetra_MultiVector;
class Epetra_Import;
class Epetra_BlockMap;
class Ifpack_Reordering;


class Ifpack_ReorderFilter : public virtual Epetra_RowMatrix {

public:
  // Constructor.
  Ifpack_ReorderFilter(Epetra_RowMatrix* Matrix,
               Ifpack_Reordering* Reordering);

  Ifpack_ReorderFilter(const Ifpack_ReorderFilter& RHS);

  virtual ~Ifpack_ReorderFilter();

  Ifpack_ReorderFilter& operator=(const Ifpack_ReorderFilter& RHS);

  virtual inline int NumMyRowEntries(int MyRow, int & NumEntries) const
  {
    return(Matrix().NumMyRowEntries(MyRow, NumEntries));
  }

  virtual int MaxNumEntries() const
  {
    return(MaxNumEntries_);
  }
  
  // Extracts a copy of the given row for the reordered matrix.
  virtual int ExtractMyRowCopy(int MyRow, int Length, int & NumEntries, double *Values, int * Indices) const;

  virtual int ExtractDiagonalCopy(Epetra_Vector & Diagonal) const;

  virtual int Multiply(bool TransA, const Epetra_MultiVector& X, 
               Epetra_MultiVector& Y) const;

  virtual int Solve(bool Upper, bool Trans, bool UnitDiagonal, 
            const Epetra_MultiVector& X,
            Epetra_MultiVector& Y) const;

  virtual int Apply(const Epetra_MultiVector& X,
            Epetra_MultiVector& Y) const;

  virtual int ApplyInverse(const Epetra_MultiVector& X,
               Epetra_MultiVector& Y) const
  {
    return(-1);
  }

  virtual int InvRowSums(Epetra_Vector& x) const
  {
    return(-1);
  }

  virtual int LeftScale(const Epetra_Vector& x)
  {
    return(-1);
  }

  virtual int InvColSums(Epetra_Vector& x) const
  {
    return(-1);
  }

  virtual int RightScale(const Epetra_Vector& x) 
  {
    return(-1);
  }

  virtual bool Filled() const
  {
    return(Matrix().Filled());
  }

  virtual double NormInf() const
  {
    return(-1.0);
  }

  virtual double NormOne() const
  {
    return(-1.0);
  }

  virtual int NumGlobalNonzeros() const
  {
    return(Matrix().NumGlobalNonzeros());
  }

  virtual int NumGlobalRows() const
  {
    return(Matrix().NumGlobalRows());
  }

  virtual int NumGlobalCols() const
  {
    return(Matrix().NumGlobalCols());
  }

  virtual int NumGlobalDiagonals() const
  {
    return(Matrix().NumGlobalDiagonals());
  }

  virtual int NumMyNonzeros() const
  {
    return(Matrix().NumMyNonzeros());
  }

  virtual int NumMyRows() const
  {
    return(Matrix().NumMyRows());
  }

  virtual int NumMyCols() const
  {
    return(Matrix().NumMyCols());
  }

  virtual int NumMyDiagonals() const
  {
    return(Matrix().NumMyDiagonals());
  }

  virtual bool LowerTriangular() const
  {
    return(false);
  }

  virtual bool UpperTriangular() const
  {
    return(false);
  }

  virtual const Epetra_Map & RowMatrixRowMap() const
  {
    return(Matrix().RowMatrixRowMap());
  }

  virtual const Epetra_Map & RowMatrixColMap() const
  {
    return(Matrix().RowMatrixColMap());
  }

  virtual const Epetra_Import * RowMatrixImporter() const
  {
    return(Matrix().RowMatrixImporter());
  }

  int SetUseTranspose(bool UseTranspose)
  {
    return(Matrix().SetUseTranspose(UseTranspose));
  }

  bool UseTranspose() const 
  {
    return(Matrix().UseTranspose());
  }
  
  bool HasNormInf() const
  {
    return(true);
  }

  const Epetra_Comm & Comm() const
  {
    return(Matrix().Comm());
  }

  const Epetra_Map & OperatorDomainMap() const 
  {
    return(Matrix().OperatorDomainMap());
  }

  const Epetra_Map & OperatorRangeMap() const 
  {
    return(Matrix().OperatorRangeMap());
  }

  const Epetra_BlockMap& Map() const 
  {
    return(Matrix().Map());
  }

  const char* Label() const{
    return(Label_);
  }

  inline Epetra_RowMatrix& Matrix() const {
    return(*A_);
  }

  inline Ifpack_Reordering& Reordering() const {
    return(*Reordering_);
  }

private:

  Epetra_RowMatrix* A_;
  Ifpack_Reordering* Reordering_;

  int NumMyRows_;
  int MaxNumEntries_;
  char Label_[80];

};


#endif /* IFPACK_DROPFILTER_H */

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