MueLu_Graph_decl.hpp

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//        MueLu: A package for multigrid based preconditioning
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#ifndef MUELU_GRAPH_DECL_HPP
#define MUELU_GRAPH_DECL_HPP

#include <Xpetra_ConfigDefs.hpp>   // global_size_t
#include <Xpetra_CrsGraph.hpp>     // inline functions requires class declaration
#include <Xpetra_Map_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"

#include "MueLu_Graph_fwd.hpp"
#include "MueLu_GraphBase.hpp"

namespace MueLu {

  template <class LocalOrdinal = Xpetra::CrsGraph<>::local_ordinal_type,
            class GlobalOrdinal = typename Xpetra::CrsGraph<LocalOrdinal>::global_ordinal_type,
            class Node = typename Xpetra::CrsGraph<LocalOrdinal, GlobalOrdinal>::node_type>
  class Graph
    : public MueLu::GraphBase<LocalOrdinal,GlobalOrdinal,Node> { //FIXME  shortnames isn't working
#undef MUELU_GRAPH_SHORT
#include "MueLu_UseShortNamesOrdinal.hpp"

  public:


    Graph(const RCP<const CrsGraph> & graph, const std::string & /* objectLabel */="") : graph_(graph) {
      minLocalIndex_ = graph_->getDomainMap()->getMinLocalIndex();
      maxLocalIndex_ = graph_->getDomainMap()->getMaxLocalIndex();
    }

    virtual ~Graph() {}

    size_t GetNodeNumVertices() const                                        { return graph_->getNodeNumRows(); }
    size_t GetNodeNumEdges()    const                                        { return graph_->getNodeNumEntries(); }

    Xpetra::global_size_t GetGlobalNumEdges() const                          { return graph_->getGlobalNumEntries(); }

    const RCP<const Teuchos::Comm<int> > GetComm() const                     { return graph_->getComm(); }
    const RCP<const Map> GetDomainMap() const                                { return graph_->getDomainMap(); }
    const RCP<const Map> GetImportMap() const                                { return graph_->getColMap();    }

    void SetBoundaryNodeMap(const ArrayRCP<const bool>& localDirichletNodes) { localDirichletNodes_ = localDirichletNodes; }

    const ArrayRCP<const bool> GetBoundaryNodeMap() const                    { return localDirichletNodes_; }

    size_t getNodeMaxNumRowEntries () const                                  { return graph_->getNodeMaxNumRowEntries(); }

    ArrayView<const LO> getNeighborVertices(LO i) const {
      ArrayView<const LO> rowView;
      graph_->getLocalRowView(i, rowView);
      return rowView;
    }

    bool isLocalNeighborVertex(LO i) const                                   { return i >= minLocalIndex_ && i <= maxLocalIndex_; }

#ifdef MUELU_UNUSED
    size_t GetNodeNumGhost() const;
#endif

    std::string description() const                                          { return "MueLu.description()"; }

    //using MueLu::Describable::describe; // overloading, not hiding
    //void describe(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;;
    void print(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;

  private:

    RCP<const CrsGraph> graph_;

    ArrayRCP<const bool> localDirichletNodes_;

    // local index boundaries (cached from domain map)
    LO minLocalIndex_, maxLocalIndex_;
  };

} // namespace MueLu

#define MUELU_GRAPH_SHORT
#endif // MUELU_GRAPH_DECL_HPP