Thyra_ExplicitMultiVectorView.hpp

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// 
//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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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 ExplicitMultiVectorView {
public:
  ExplicitMultiVectorView(
    const MultiVectorBase<Scalar>& mv, const Range1D &rowRng = Range1D(), const Range1D &colRng = Range1D()
    )
    : mv_(mv) { mv_.getSubMultiVector(rowRng,colRng,&smv_); }
  ~ExplicitMultiVectorView() { mv_.freeSubMultiVector(&smv_); }
  const RTOpPack::SubMultiVectorT<Scalar>& smv() const { return smv_; }
  RTOp_index_type   globalOffset() const { return smv_.globalOffset(); }
  RTOp_index_type   subDim()       const { return smv_.subDim();  }
  RTOp_index_type   colOffset()    const { return smv_.colOffset(); }
  RTOp_index_type   numSubCols()   const { return smv_.numSubCols();  }
  const Scalar*     values()       const { return smv_.values();  }
  RTOp_index_type   leadingDim()   const { return smv_.leadingDim();  }
  const Scalar& operator()(RTOp_index_type i,RTOp_index_type j) const { return smv_(i,j); }
private:
  const MultiVectorBase<Scalar>          &mv_;
  RTOpPack::SubMultiVectorT<Scalar>  smv_;
  // Not defined and not to be called
  ExplicitMultiVectorView();
  ExplicitMultiVectorView(const ExplicitMultiVectorView<Scalar>&);
  ExplicitMultiVectorView<Scalar>& operator==(const ExplicitMultiVectorView<Scalar>&);
};
 
template<class Scalar>
class ExplicitMutableMultiVectorView {
public:
  ExplicitMutableMultiVectorView(
    MultiVectorBase<Scalar>& mv, const Range1D &rowRng = Range1D(), const Range1D &colRng = Range1D()
    )
    : mv_(mv) { mv_.getSubMultiVector(rowRng,colRng,&smv_); }
  ~ExplicitMutableMultiVectorView() { mv_.commitSubMultiVector(&smv_); }
  const RTOpPack::MutableSubMultiVectorT<Scalar>& smv() const { return smv_; }
  RTOp_index_type   globalOffset() const { return smv_.globalOffset(); }
  RTOp_index_type   subDim()       const { return smv_.subDim();  }
  RTOp_index_type   colOffset()    const { return smv_.colOffset(); }
  RTOp_index_type   numSubCols()   const { return smv_.numSubCols();  }
  Scalar*           values()       const { return smv_.values();  }
  RTOp_index_type   leadingDim()   const { return smv_.leadingDim();  }
  Scalar& operator()(RTOp_index_type i,RTOp_index_type j) { return smv_(i,j); }
private:
  MultiVectorBase<Scalar>                       &mv_;
  RTOpPack::MutableSubMultiVectorT<Scalar>  smv_;
  // Not defined and not to be called
  ExplicitMutableMultiVectorView();
  ExplicitMutableMultiVectorView(const ExplicitMutableMultiVectorView<Scalar>&);
  ExplicitMutableMultiVectorView<Scalar>& operator==(const ExplicitMutableMultiVectorView<Scalar>&);
};

} // namespace Thyra

#endif // THYRA_EXPLICIT_MULTI_VECTOR_VIEW_HPP

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