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

#include "Xpetra_ConfigDefs.hpp"

#include "Xpetra_MultiVector.hpp"

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

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

#include "Xpetra_Exceptions.hpp"

namespace Xpetra {

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

  public:

    //! Constructor specifying the number of non-zeros for all rows.
    static Teuchos::RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> >
    Build (const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map,
           size_t NumVectors,
           bool zeroOut=true)
    {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

    //! Set multi-vector values from array of pointers using Teuchos memory management classes. (copy).
    static Teuchos::RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > Build(const Teuchos::RCP< const Map< LocalOrdinal, GlobalOrdinal, Node > > &map, const Teuchos::ArrayView< const Teuchos::ArrayView< const Scalar > > &ArrayOfPtrs, size_t NumVectors) {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

  };


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


  // Specialization for Scalar=double, LO=GO=int and Serial node
  // Used both for Epetra and Tpetra
  // For any other node definition the general default implementation is used which allows Tpetra only
  template <>
  class MultiVectorFactory<double, int, int, EpetraNode> {

    typedef double Scalar;
    typedef int LocalOrdinal;
    typedef int GlobalOrdinal;
    typedef EpetraNode Node;

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

  public:

    static RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > Build(const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map, size_t NumVectors, bool zeroOut=true) {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

      XPETRA_FACTORY_END;
    }

    //! Set multi-vector values from array of pointers using Teuchos memory management classes. (copy).
    static Teuchos::RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > Build(const Teuchos::RCP< const Map< LocalOrdinal, GlobalOrdinal, Node > > &map, const Teuchos::ArrayView< const Teuchos::ArrayView< const Scalar > > &ArrayOfPtrs, size_t NumVectors) {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

      XPETRA_FACTORY_END;
    }

  };

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

  template <>
  class MultiVectorFactory<double, int, long long, EpetraNode> {

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

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

  public:

    static RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > Build(const Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > &map, size_t NumVectors, bool zeroOut=true) {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

      XPETRA_FACTORY_END;
    }

    //! Set multi-vector values from array of pointers using Teuchos memory management classes. (copy).
    static Teuchos::RCP<MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > Build(const Teuchos::RCP< const Map< LocalOrdinal, GlobalOrdinal, Node > > &map, const Teuchos::ArrayView< const Teuchos::ArrayView< const Scalar > > &ArrayOfPtrs, size_t NumVectors) {
      XPETRA_MONITOR("MultiVectorFactory::Build");

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

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

      XPETRA_FACTORY_END;
    }

  };
#endif // HAVE_XPETRA_INT_LONG_LONG
#endif // HAVE_XPETRA_SERIAL

}

#define XPETRA_MULTIVECTORFACTORY_SHORT
#endif
