overlappingoperator.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
/*
  Copyright (C) 2011-2013 by Andreas Lauser

  This file is part of the Open Porous Media project (OPM).

  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EWOMS_OVERLAPPING_OPERATOR_HH
#define EWOMS_OVERLAPPING_OPERATOR_HH

#include <dune/istl/operators.hh>

namespace Ewoms {
namespace Linear {

template <class OverlappingMatrix, class DomainVector, class RangeVector>
class OverlappingOperator
    : public Dune::AssembledLinearOperator<OverlappingMatrix, DomainVector, RangeVector>
{
    typedef typename OverlappingMatrix::Overlap Overlap;

public:
    typedef DomainVector domain_type;
    typedef typename domain_type::field_type field_type;

    // redefine the category, that is the only difference
    enum { category = Dune::SolverCategory::overlapping };

    OverlappingOperator(const OverlappingMatrix &A) : A_(A)
    {}

    virtual void apply(const DomainVector &x, RangeVector &y) const
    {
        A_.mv(x, y);
        y.sync();
    }

    virtual void applyscaleadd(field_type alpha, const DomainVector &x,
                               RangeVector &y) const
    {
        A_.usmv(alpha, x, y);
        y.sync();
    }

    virtual const OverlappingMatrix &getmat() const
    { return A_; }

    const Overlap &overlap() const
    { return A_.overlap(); }

private:
    const OverlappingMatrix &A_;
};

} // namespace Linear
} // namespace Ewoms

#endif