Thyra_DetachedMultiVectorView.hpp

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//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
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#include "Thyra_MultiVectorBase.hpp"

#ifndef THYRA_EXPLICIT_MULTI_VECTOR_VIEW_HPP
#define THYRA_EXPLICIT_MULTI_VECTOR_VIEW_HPP

namespace Thyra {

template<class Scalar>
class ConstDetachedMultiVectorView {
public:
  ConstDetachedMultiVectorView(
    const MultiVectorBase<Scalar>& mv, const Range1D &rowRng = Range1D(), const Range1D &colRng = Range1D()
    )
    : mv_(mv) { mv_.acquireDetachedView(rowRng,colRng,&smv_); }
  ~ConstDetachedMultiVectorView() { mv_.releaseDetachedView(&smv_); }
  const RTOpPack::ConstSubMultiVectorView<Scalar>& smv() const { return smv_; }
  Teuchos_Index   globalOffset() const { return smv_.globalOffset(); }
  Teuchos_Index   subDim()       const { return smv_.subDim();  }
  Teuchos_Index   colOffset()    const { return smv_.colOffset(); }
  Teuchos_Index   numSubCols()   const { return smv_.numSubCols();  }
  const Scalar*     values()       const { return smv_.values();  }
  Teuchos_Index   leadingDim()   const { return smv_.leadingDim();  }
  const Scalar& operator()(Teuchos_Index i,Teuchos_Index j) const { return smv_(i,j); }
private:
  const MultiVectorBase<Scalar>          &mv_;
  RTOpPack::ConstSubMultiVectorView<Scalar>  smv_;
  // Not defined and not to be called
  ConstDetachedMultiVectorView();
  ConstDetachedMultiVectorView(const ConstDetachedMultiVectorView<Scalar>&);
  ConstDetachedMultiVectorView<Scalar>& operator==(const ConstDetachedMultiVectorView<Scalar>&);
};
 
template<class Scalar>
class DetachedMultiVectorView {
public:
  DetachedMultiVectorView(
    MultiVectorBase<Scalar>& mv, const Range1D &rowRng = Range1D(), const Range1D &colRng = Range1D()
    )
    : mv_(mv) { mv_.acquireDetachedView(rowRng,colRng,&smv_); }
  ~DetachedMultiVectorView() { mv_.commitDetachedView(&smv_); }
  const RTOpPack::SubMultiVectorView<Scalar>& smv() const { return smv_; }
  Teuchos_Index   globalOffset() const { return smv_.globalOffset(); }
  Teuchos_Index   subDim()       const { return smv_.subDim();  }
  Teuchos_Index   colOffset()    const { return smv_.colOffset(); }
  Teuchos_Index   numSubCols()   const { return smv_.numSubCols();  }
  Scalar*           values()       const { return smv_.values();  }
  Teuchos_Index   leadingDim()   const { return smv_.leadingDim();  }
  Scalar& operator()(Teuchos_Index i,Teuchos_Index j) { return smv_(i,j); }
private:
  MultiVectorBase<Scalar>                   &mv_;
  RTOpPack::SubMultiVectorView<Scalar>  smv_;
  // Not defined and not to be called
  DetachedMultiVectorView();
  DetachedMultiVectorView(const DetachedMultiVectorView<Scalar>&);
  DetachedMultiVectorView<Scalar>& operator==(const DetachedMultiVectorView<Scalar>&);
};

} // namespace Thyra

#endif // THYRA_EXPLICIT_MULTI_VECTOR_VIEW_HPP

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