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//             Xpetra: A linear algebra interface package
//                  Copyright 2012 Sandia Corporation
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#ifndef XPETRA_CRSGRAPHFACTORY_HPP
#define XPETRA_CRSGRAPHFACTORY_HPP

#include "Xpetra_ConfigDefs.hpp"

#include "Xpetra_CrsGraph.hpp"

#ifdef HAVE_XPETRA_TPETRA
#include "Xpetra_TpetraCrsGraph.hpp"
#endif

#ifdef HAVE_XPETRA_EPETRA
#include "Xpetra_EpetraCrsGraph.hpp"
#endif

#include "Xpetra_Exceptions.hpp"

namespace Xpetra {

  template <class LocalOrdinal/* = CrsGraph<>::local_ordinal_type*/,
            class GlobalOrdinal/* =
              typename CrsGraph<LocalOrdinal>::global_ordinal_type*/,
            class Node/* =
              typename CrsGraph<LocalOrdinal, GlobalOrdinal>::node_type*/>
  class CrsGraphFactory {
  private:
    //! Private constructor. This is a static class.
    CrsGraphFactory() {}

  public:
    //! Constructor specifying the number of non-zeros for all rows.
    static Teuchos::RCP<CrsGraph<LocalOrdinal, GlobalOrdinal, Node> >
    Build(const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map, size_t NumVectors, ProfileType pftype=DynamicProfile) {
      XPETRA_MONITOR("CrsGraphFactory::Build");

#ifdef HAVE_XPETRA_TPETRA
      if (map->lib() == UseTpetra)
        return rcp( new TpetraCrsGraph<LocalOrdinal, GlobalOrdinal, Node> (map, NumVectors, pftype) );
#endif

      XPETRA_FACTORY_ERROR_IF_EPETRA(map->lib());
      XPETRA_FACTORY_END;
      return null;
    }
  };

// we need the Epetra specialization only if Epetra is enabled
#if (defined(HAVE_XPETRA_EPETRA) && !defined(XPETRA_EPETRA_NO_32BIT_GLOBAL_INDICES))

  template <>
  class CrsGraphFactory<int, int, EpetraNode> {

    typedef int LocalOrdinal;
    typedef int GlobalOrdinal;
    typedef EpetraNode Node;

  private:
    //! Private constructor. This is a static class.
    CrsGraphFactory() {}

  public:

    static RCP<CrsGraph<LocalOrdinal, GlobalOrdinal, Node> >
    Build(const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map, size_t NumVectors, ProfileType pftype=DynamicProfile) {
      XPETRA_MONITOR("CrsGraphFactory::Build");

#ifdef HAVE_XPETRA_TPETRA
      if (map->lib() == UseTpetra)
        return rcp( new TpetraCrsGraph<LocalOrdinal, GlobalOrdinal, Node> (map, NumVectors, pftype) );
#endif

      if (map->lib() == UseEpetra)
        return rcp( new EpetraCrsGraphT<int, Node>(map, NumVectors, pftype) );

      XPETRA_FACTORY_END;
      return null;
    }

  };
#endif

// we need the Epetra specialization only if Epetra is enabled
#if (defined(HAVE_XPETRA_EPETRA) && !defined(XPETRA_EPETRA_NO_64BIT_GLOBAL_INDICES))

  template <>
  class CrsGraphFactory<int, long long, EpetraNode> {

    typedef int LocalOrdinal;
    typedef long long GlobalOrdinal;
    typedef EpetraNode Node;

  private:
    //! Private constructor. This is a static class.
    CrsGraphFactory() {}

  public:

    static RCP<CrsGraph<LocalOrdinal, GlobalOrdinal, Node> >
    Build(const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map, size_t NumVectors, ProfileType pftype=DynamicProfile) {
      XPETRA_MONITOR("CrsGraphFactory::Build");

#ifdef HAVE_XPETRA_TPETRA
      if (map->lib() == UseTpetra)
        return rcp( new TpetraCrsGraph<LocalOrdinal, GlobalOrdinal, Node> (map, NumVectors, pftype) );
#endif

      if (map->lib() == UseEpetra)
        return rcp( new EpetraCrsGraphT<long long, Node>(map, NumVectors, pftype) );

      XPETRA_FACTORY_END;
      return null;
    }

  };
#endif
}

#define XPETRA_CRSGRAPHFACTORY_SHORT
#endif
