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#ifndef THYRA_TPETRA_VECTOR_SPACE_HPP
#define THYRA_TPETRA_VECTOR_SPACE_HPP


#include "Thyra_TpetraVectorSpace_decl.hpp"
#include "Thyra_TpetraThyraWrappers.hpp"
#include "Thyra_TpetraVector.hpp"
#include "Thyra_TpetraMultiVector.hpp"


namespace Thyra {


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
RCP<TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node> >
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::create()
{
  const RCP<this_t> vs(new this_t);
  vs->weakSelfPtr_ = vs.create_weak();
  return vs;
}


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
void TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::initialize(
  const RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > &tpetraMap
  )
{
  comm_ = convertTpetraToThyraComm(tpetraMap->getComm());
  tpetraMap_ = tpetraMap;
  this->updateState(tpetraMap->getGlobalNumElements(),
    !tpetraMap->isDistributed());
}


// Overridden from VectorSpace


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
RCP<VectorBase<Scalar> >
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::createMember() const
{
  return tpetraVector<Scalar>(
    weakSelfPtr_.create_strong().getConst(),
    Teuchos::rcp(
      new Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node>(tpetraMap_, false)
      )
    );
}


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
RCP< MultiVectorBase<Scalar> >
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::createMembers(int numMembers) const
{
  return tpetraMultiVector<Scalar>(
    weakSelfPtr_.create_strong().getConst(),
    tpetraVectorSpace<Scalar>(
      Tpetra::createLocalMapWithNode<LocalOrdinal, GlobalOrdinal, Node>(
        numMembers, tpetraMap_->getComm(), tpetraMap_->getNode()
        )
      ),
    Teuchos::rcp(
      new Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node>(
        tpetraMap_, numMembers, false)
      )
    );
  // ToDo: Create wrapper function to create locally replicated vector space
  // and use it.
}


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
bool TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::hasInCoreView(
  const Range1D& rng_in, const EViewType viewType, const EStrideType strideType
  ) const
{
  const Range1D rng = full_range(rng_in,0,this->dim()-1);
  const Ordinal l_localOffset = this->localOffset();

  const Ordinal myLocalSubDim = tpetraMap_.is_null () ?
    static_cast<Ordinal> (0) : tpetraMap_->getNodeNumElements ();

  return ( l_localOffset<=rng.lbound() && rng.ubound()<l_localOffset+myLocalSubDim );
}


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
RCP< const VectorSpaceBase<Scalar> >
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::clone() const
{
  return tpetraVectorSpace<Scalar>(tpetraMap_);
}

// Overridden from ScalarProdVectorSpaceBase, via SpmdVectorSpaceDefaultBase

template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
void TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::scalarProdsImpl(
    const MultiVectorBase<Scalar> &X, const MultiVectorBase<Scalar> &Y,
    const ArrayView<Scalar> &scalarProds_out) const
{
  typedef TpetraOperatorVectorExtraction<Scalar,LocalOrdinal,GlobalOrdinal,Node> TOVE;
  typedef Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> TpetraMV;
  RCP<const TpetraMV> tX = TOVE::getConstTpetraMultiVector(Teuchos::rcpFromRef(X)),
                      tY = TOVE::getConstTpetraMultiVector(Teuchos::rcpFromRef(Y));
  tX->dot(*tY, scalarProds_out);
}

// Overridden from SpmdVectorSpaceDefaultBase


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
RCP<const Teuchos::Comm<Ordinal> >
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::getComm() const
{
  return comm_;
}


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
Ordinal TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::localSubDim() const
{
  return tpetraMap_.is_null () ? static_cast<Ordinal> (0) :
    static_cast<Ordinal> (tpetraMap_->getNodeNumElements ());
}

// private


template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
TpetraVectorSpace<Scalar,LocalOrdinal,GlobalOrdinal,Node>::TpetraVectorSpace()
{
  // The base classes should automatically default initialize to a safe
  // uninitialized state.
}


} // end namespace Thyra


#endif // THYRA_TPETRA_VECTOR_SPACE_HPP
