Ifpack_IlukGraph.h

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//       Ifpack: Object-Oriented Algebraic Preconditioner Package
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#ifndef _IFPACK_ILUK_GRAPH_H_
#define _IFPACK_ILUK_GRAPH_H_

#include "Ifpack_ConfigDefs.h"
#include "Epetra_Object.h" 
#include "Epetra_CrsGraph.h"
#include "Epetra_Import.h"

#include "Teuchos_RefCountPtr.hpp"

namespace Teuchos {
  class ParameterList;
}


class Ifpack_IlukGraph {
      
  // Give ostream << function some access to private and protected data/functions.

  friend ostream& operator << (ostream& os, const Ifpack_IlukGraph& A);

 public:


  Ifpack_IlukGraph(const Epetra_CrsGraph & Graph_in, int LevelFill_in, int LevelOverlap_in);
  
  Ifpack_IlukGraph(const Ifpack_IlukGraph & Graph_in);

  virtual ~Ifpack_IlukGraph();
  
  /* This method is only available if the Teuchos package is enabled.
     This method recogizes two parameter names: Level_fill and Level_overlap.
     Both are case insensitive, and in both cases the ParameterEntry must
     have type int.
  */
  int SetParameters(const Teuchos::ParameterList& parameterlist,
                    bool cerr_warning_if_unused=false);

  /* 
    \return Integer error code, set to 0 if successful.
    
  */
  virtual int ConstructFilledGraph();

  /* 
    \return Integer error code, set to 0 if successful.
    
  */
  virtual int ConstructOverlapGraph();
  
  virtual int LevelFill() const {return(LevelFill_);};
  
  virtual int LevelOverlap() const {return(LevelOverlap_);};

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int NumGlobalBlockRows() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalBlockRows_);
    else
      throw "Ifpack_IlukGraph::NumGlobalBlockRows: GlobalIndices not int.";
  }
  
  int NumGlobalBlockCols() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalBlockCols_);
    else
      throw "Ifpack_IlukGraph::NumGlobalBlockCols: GlobalIndices not int.";
  }
    
  int NumGlobalRows() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalRows_);
    else
      throw "Ifpack_IlukGraph::NumGlobalRows: GlobalIndices not int.";
  }
  
  int NumGlobalCols() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalCols_);
    else
      throw "Ifpack_IlukGraph::NumGlobalCols: GlobalIndices not int.";
  }
  int NumGlobalNonzeros() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalNonzeros_);
    else
      throw "Ifpack_IlukGraph::NumGlobalNonzeros: GlobalIndices not int.";
  }
  
  virtual int NumGlobalBlockDiagonals() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int)(NumGlobalBlockDiagonals_);
    else
      throw "Ifpack_IlukGraph::NumGlobalBlockDiagonals: GlobalIndices not int.";
  }
#endif

  long long NumGlobalBlockRows64() const {return(NumGlobalBlockRows_);};
  
  long long NumGlobalBlockCols64() const {return(NumGlobalBlockCols_);};
    
  long long NumGlobalRows64() const {return(NumGlobalRows_);};
  
  long long NumGlobalCols64() const {return(NumGlobalCols_);};
  long long NumGlobalNonzeros64() const {return(NumGlobalNonzeros_);};
  
  virtual long long NumGlobalBlockDiagonals64() const {return(NumGlobalBlockDiagonals_);};

  int NumMyBlockRows() const {return(NumMyBlockRows_);};
  
  int NumMyBlockCols() const {return(NumMyBlockCols_);};
  
  
  int NumMyRows() const {return(NumMyRows_);};
  
  int NumMyCols() const {return(NumMyCols_);};
  
  int NumMyNonzeros() const {return(NumMyNonzeros_);};
  
  virtual int NumMyBlockDiagonals() const {return(NumMyBlockDiagonals_);};
  
#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
  int IndexBase() const {
    if(Graph_.RowMap().GlobalIndicesInt())
      return (int) IndexBase64();
    throw "Ifpack_IlukGraph::IndexBase: GlobalIndices not int.";
  }
#endif
  long long IndexBase64() const {return(IndexBase_);};
  
  virtual Epetra_CrsGraph & L_Graph() {return(*L_Graph_);};
  
  virtual Epetra_CrsGraph & U_Graph() {return(*U_Graph_);};
  
  virtual Epetra_CrsGraph & L_Graph() const {return(*L_Graph_);};
  
  virtual Epetra_CrsGraph & U_Graph() const {return(*U_Graph_);};
  
  virtual Epetra_Import * OverlapImporter() const  {return(&*OverlapImporter_);};
  
  virtual Epetra_CrsGraph * OverlapGraph() const  {return(&*OverlapGraph_);};

    virtual const Epetra_BlockMap & DomainMap() const {return(DomainMap_);};

    virtual const Epetra_BlockMap & RangeMap() const{return(RangeMap_);};

    virtual const Epetra_Comm & Comm() const{return(Comm_);};
  
 private:
    

  const Epetra_CrsGraph & Graph_;
  const Epetra_BlockMap & DomainMap_;
  const Epetra_BlockMap & RangeMap_;
  const Epetra_Comm & Comm_;
  Teuchos::RefCountPtr<Epetra_CrsGraph> OverlapGraph_;
  Teuchos::RefCountPtr<Epetra_BlockMap> OverlapRowMap_;
  Teuchos::RefCountPtr<Epetra_Import> OverlapImporter_;
  int LevelFill_;
  int LevelOverlap_;
  Teuchos::RefCountPtr<Epetra_CrsGraph> L_Graph_;
  Teuchos::RefCountPtr<Epetra_CrsGraph> U_Graph_;
  long long IndexBase_;
  long long NumGlobalRows_;
  long long NumGlobalCols_;
  long long NumGlobalBlockRows_;
  long long NumGlobalBlockCols_;
  long long NumGlobalBlockDiagonals_;
  long long NumGlobalNonzeros_;
  long long NumGlobalEntries_;
  int NumMyBlockRows_;
  int NumMyBlockCols_;
  int NumMyRows_;
  int NumMyCols_;
  int NumMyBlockDiagonals_;
  int NumMyNonzeros_;
  int NumMyEntries_;
  

 };

ostream& operator << (ostream& os, const Ifpack_IlukGraph& A);

#endif /* _IFPACK_ILUK_GRAPH_H_ */