• Main Page
  • Namespaces
  • Classes
  • Files
  • File List
  • File Members

Meros_PreconditioningStrategy.hpp

Go to the documentation of this file.
00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //              Meros: Segregated Preconditioning Package
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef MEROS_PRECONDITIONING_STRATEGY_H
00030 #define MEROS_PRECONDITIONING_STRATEGY_H
00031 
00032 #include "Thyra_LinearOpBase.hpp"
00033 #include "Thyra_VectorImpl.hpp" // need for LinOpDecl
00034 #include "Thyra_VectorSpaceImpl.hpp" // need for LinOpDecl
00035 #include "Thyra_LinearOperatorImpl.hpp"
00036 #include "Thyra_LinearOpWithSolveFactoryBase.hpp"
00037 #include "Thyra_LinearOpWithSolveBase.hpp"
00038 #include "Thyra_PreconditionerFactoryBase.hpp"
00039 #include "Thyra_PreconditionerBase.hpp"
00040 
00041 namespace Meros 
00042 {
00043   using namespace Teuchos;
00044   using namespace Thyra;
00045 
00049   template <class Scalar>
00050   class PreconditioningStrategy
00051   {
00052   public:
00054     PreconditioningStrategy() : pf_() {;}
00055     
00057     PreconditioningStrategy(const RCP<PreconditionerFactoryBase<Scalar> >& pf)
00058       : pf_(pf) {;}
00059     
00061     PreconditioningStrategy(Handleable<PreconditionerFactoryBase<Scalar> >* pf)
00062       : pf_(pf->getRcp()) {;}
00063 
00065     RCP<PreconditionerBase<Scalar> > getPrec(const LinearOperator<Scalar>& op) const 
00066     {
00067       RCP<PreconditionerBase<Scalar> > rtn = pf_->createPrec();
00068       pf_->initializeOp<Scalar>(op.ptr(), &*rtn);
00069       return rtn;
00070     }
00071 
00073     const RCP<PreconditionerFactoryBase<Scalar> >& ptr() const {return pf_;}
00075     RCP<PreconditionerFactoryBase<Scalar> > ptr() {return pf_;}
00076 
00077   protected:
00078     RCP<PreconditionerFactoryBase<Scalar> > pf() {return pf_;}
00079 
00080   private:
00081 
00082     RCP<PreconditionerFactoryBase<Scalar> > pf_;
00083   };
00084 
00085 
00086 } // namespace Meros
00087 
00088 #endif // MEROS_PCD_OPERATOR_SOURCE_H