Xpetra_MatrixFactory.cpp

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//             Xpetra: A linear algebra interface package
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#ifndef XPETRA_MATRIXFACTORY_CPP
#define XPETRA_MATRIXFACTORY_CPP

#include "Xpetra_MatrixFactory.hpp"

namespace Xpetra {

   Teuchos::RCP<Xpetra::Matrix<double,int,int> > MatrixFactory2<double,int,int>::BuildCopy(const Teuchos::RCP<const Matrix> A) {
    RCP<const CrsMatrixWrap> oldOp = Teuchos::rcp_dynamic_cast<const CrsMatrixWrap>(A);
    if (oldOp == Teuchos::null)
      throw Exceptions::BadCast("Cast from Xpetra::Matrix to Xpetra::CrsMatrixWrap failed");

    RCP<const CrsMatrix> oldCrsOp = oldOp->getCrsMatrix();

#ifdef HAVE_XPETRA_EPETRA
#ifndef XPETRA_EPETRA_NO_32BIT_GLOBAL_INDICES
        RCP<const EpetraCrsMatrixT<GlobalOrdinal> > oldECrsOp = Teuchos::rcp_dynamic_cast<const EpetraCrsMatrixT<GlobalOrdinal> >(oldCrsOp);
    if (oldECrsOp != Teuchos::null) {
      // Underlying matrix is Epetra
      RCP<CrsMatrix>     newECrsOp(new EpetraCrsMatrixT<GlobalOrdinal>(*oldECrsOp));
      RCP<CrsMatrixWrap> newOp    (new CrsMatrixWrap  (newECrsOp));

      return newOp;
    }
#endif
#endif

#ifdef HAVE_XPETRA_TPETRA
    // Underlying matrix is Tpetra
    RCP<const TpetraCrsMatrix> oldTCrsOp = Teuchos::rcp_dynamic_cast<const TpetraCrsMatrix>(oldCrsOp);
    if (oldTCrsOp != Teuchos::null) {
      RCP<CrsMatrix>     newTCrsOp(new TpetraCrsMatrix(*oldTCrsOp));
      RCP<CrsMatrixWrap> newOp    (new CrsMatrixWrap(newTCrsOp));

      return newOp;
    }
#else
    throw Exceptions::BadCast("Cast from Xpetra::Matrix to Xpetra::EpetraCrsMatrix or Xpetra::TpetraCrsMatrix failed");
#endif

    return Teuchos::null;  // make compiler happy
  }

#ifdef HAVE_XPETRA_INT_LONG_LONG
Teuchos::RCP<Xpetra::Matrix<double,int,long long> > MatrixFactory2<double,int,long long>::BuildCopy(const Teuchos::RCP<const Matrix> A) {
    RCP<const CrsMatrixWrap> oldOp = Teuchos::rcp_dynamic_cast<const CrsMatrixWrap>(A);
    if (oldOp == Teuchos::null)
      throw Exceptions::BadCast("Cast from Xpetra::Matrix to Xpetra::CrsMatrixWrap failed");

    RCP<const CrsMatrix> oldCrsOp = oldOp->getCrsMatrix();

#ifdef HAVE_XPETRA_EPETRA
#ifndef XPETRA_EPETRA_NO_64BIT_GLOBAL_INDICES
        RCP<const EpetraCrsMatrixT<GlobalOrdinal> > oldECrsOp = Teuchos::rcp_dynamic_cast<const EpetraCrsMatrixT<GlobalOrdinal> >(oldCrsOp);
    if (oldECrsOp != Teuchos::null) {
      // Underlying matrix is Epetra
      RCP<CrsMatrix>     newECrsOp(new EpetraCrsMatrixT<GlobalOrdinal>(*oldECrsOp));
      RCP<CrsMatrixWrap> newOp    (new CrsMatrixWrap  (newECrsOp));

      return newOp;
    }
#endif
#endif

#ifdef HAVE_XPETRA_TPETRA
    // Underlying matrix is Tpetra
    RCP<const TpetraCrsMatrix> oldTCrsOp = Teuchos::rcp_dynamic_cast<const TpetraCrsMatrix>(oldCrsOp);
    if (oldTCrsOp != Teuchos::null) {
      RCP<CrsMatrix>     newTCrsOp(new TpetraCrsMatrix(*oldTCrsOp));
      RCP<CrsMatrixWrap> newOp    (new CrsMatrixWrap(newTCrsOp));

      return newOp;
    }
#else
    throw Exceptions::BadCast("Cast from Xpetra::Matrix to Xpetra::EpetraCrsMatrix or Xpetra::TpetraCrsMatrix failed");
#endif

    return Teuchos::null;  // make compiler happy
  }

#endif // HAVE_XPETRA_INT_LONG_LONG

} // namespace Xpetra

#endif