Ifpack2_OverlapGraph.hpp

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#ifndef IFPACK2_OVERLAPGRAPH_HPP
#define IFPACK2_OVERLAPGRAPH_HPP
 
#include "Ifpack2_ConfigDefs.hpp"
#include "Tpetra_CrsGraph.hpp"
#include "Tpetra_Import.hpp"
#include "Teuchos_RCP.hpp"
#include "Ifpack2_CreateOverlapGraph.hpp"
 
namespace Teuchos {
  class ParameterList;
}
 
namespace Ifpack2 {
 
 
template<class LocalOrdinal = typename Tpetra::CrsGraph<>::local_ordinal_type,
         class GlobalOrdinal = typename Tpetra::CrsGraph<LocalOrdinal>::global_ordinal_type,
         class Node = typename Tpetra::CrsGraph<LocalOrdinal, GlobalOrdinal>::node_type>
class OverlapGraph : public Teuchos::Describable {
public:
  typedef Tpetra::CrsGraph<LocalOrdinal, GlobalOrdinal, Node> graph_type;
 
  OverlapGraph (const Teuchos::RCP<const graph_type>& UserMatrixGraph_in,
                int OverlapLevel_in);
 
  OverlapGraph (const OverlapGraph<LocalOrdinal,GlobalOrdinal,Node>& Source);
 
  virtual ~OverlapGraph () {}
 
  const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node>&
  getOverlapGraph () const { return *OverlapGraph_; }
 
  const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node>&
  getOverlapRowMap () const {return *OverlapRowMap_; }
 
  const Tpetra::Import<LocalOrdinal,GlobalOrdinal,Node>&
  getOverlapImporter () const { return *OverlapImporter_; }
 
  int OverlapLevel () const { return OverlapLevel_; }
 
protected:
  Teuchos::RCP<const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> > OverlapGraph_;
  Teuchos::RCP<const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> > UserMatrixGraph_;
  Teuchos::RCP<Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > OverlapRowMap_;
  Teuchos::RCP<Tpetra::Import<LocalOrdinal,GlobalOrdinal,Node> > OverlapImporter_;
  int OverlapLevel_;
  bool IsOverlapped_;
};
 
template<class LocalOrdinal, class GlobalOrdinal, class Node>
OverlapGraph<LocalOrdinal,GlobalOrdinal,Node>::
OverlapGraph (const Teuchos::RCP<const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> >& UserMatrixGraph_in,
              int OverlapLevel_in)
  : UserMatrixGraph_ (UserMatrixGraph_in),
    OverlapLevel_ (OverlapLevel_in),
    IsOverlapped_ (OverlapLevel_in > 0 && UserMatrixGraph_in->getDomainMap ()->isDistributed ())
{
  OverlapGraph_ = createOverlapGraph (UserMatrixGraph_, OverlapLevel_);
}
 
template<class LocalOrdinal, class GlobalOrdinal, class Node>
OverlapGraph<LocalOrdinal,GlobalOrdinal,Node>::
OverlapGraph (const OverlapGraph<LocalOrdinal,GlobalOrdinal,Node>& Source)
  : UserMatrixGraph_ (Source.UserMatrixGraph_),
    OverlapRowMap_ (Source.OverlapRowMap_),
    OverlapLevel_ (Source.OverlapLevel_),
    IsOverlapped_ (Source.IsOverlapped_)
{
  using Teuchos::rcp;
  typedef Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> map_type;
 
  if (IsOverlapped_) {
    if (! OverlapGraph_.is_null ()) {
      OverlapGraph_ = rcp (new graph_type (*OverlapGraph_));
    }
    if (! OverlapRowMap_.is_null ()) {
      OverlapRowMap_ = rcp (new map_type (*OverlapRowMap_));
    }
  }
}
 
}//namespace Ifpack2
 
#endif // IFPACK2_OVERLAPGRAPH_HPP