Thyra_LinearOpWithSolveFactoryHelpers.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
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#ifndef THYRA_LINEAR_OP_WITH_SOLVE_FACTORY_HELPERS_HPP
#define THYRA_LINEAR_OP_WITH_SOLVE_FACTORY_HELPERS_HPP

#include "Thyra_LinearOpWithSolveFactoryBase.hpp"
#include "Thyra_DefaultLinearOpSource.hpp"
#include "Thyra_DefaultPreconditioner.hpp"
#include "Thyra_DefaultInverseLinearOp.hpp"


namespace Thyra {


template<class Scalar>
bool isCompatible(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const LinearOpBase<Scalar> &fwdOp
  )
{
  return lowsFactory.isCompatible(*defaultLinearOpSource(fwdOp));
}


template<class Scalar>
void setDefaultObjectLabel(
  const LinearOpBase<Scalar> &fwdOp,
  LinearOpWithSolveBase<Scalar> *Op
  )
{
  TEST_FOR_EXCEPT(0==Op);
  const std::string OpLabel = Op->getObjectLabel();
  const std::string fwdOpLabel = fwdOp.getObjectLabel();
  if ( !OpLabel.length() && fwdOpLabel.length() )
    Op->setObjectLabel(fwdOpLabel);
}


template<class Scalar>
void initializeOp(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  LinearOpWithSolveBase<Scalar> *Op,
  const ESupportSolveUse supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  lowsFactory.initializeOp(defaultLinearOpSource(fwdOp),Op,supportSolveUse);
  setDefaultObjectLabel(*fwdOp,Op);
}


template<class Scalar>
void initializeAndReuseOp(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  LinearOpWithSolveBase<Scalar> *Op
  )
{
  lowsFactory.initializeAndReuseOp(defaultLinearOpSource(fwdOp),Op);
  setDefaultObjectLabel(*fwdOp,Op);
}


template<class Scalar>
void initializePreconditionedOp(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  const Teuchos::RCP<const PreconditionerBase<Scalar> > &prec,
  LinearOpWithSolveBase<Scalar> *Op,
  const ESupportSolveUse supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  lowsFactory.initializePreconditionedOp(
    defaultLinearOpSource(fwdOp),prec,Op,supportSolveUse
    );
  setDefaultObjectLabel(*fwdOp,Op);
}


template<class Scalar>
void initializeApproxPreconditionedOp(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &approxFwdOp,
  LinearOpWithSolveBase<Scalar> *Op,
  const ESupportSolveUse supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  lowsFactory.initializeApproxPreconditionedOp(
    defaultLinearOpSource(fwdOp),defaultLinearOpSource(approxFwdOp),Op,supportSolveUse
    );
  setDefaultObjectLabel(*fwdOp,Op);
}


template<class Scalar>
Teuchos::RCP<LinearOpWithSolveBase<Scalar> >
linearOpWithSolve(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  const ESupportSolveUse supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED
  )
{
  Teuchos::RCP<LinearOpWithSolveBase<Scalar> >
    Op = lowsFactory.createOp();
  Thyra::initializeOp<Scalar>( lowsFactory, fwdOp, &*Op, supportSolveUse
    );
  return Op;
}


template<class Scalar>
Teuchos::RCP<LinearOpBase<Scalar> >
inverse(
  const LinearOpWithSolveFactoryBase<Scalar> &LOWSF,
  const Teuchos::RCP<const LinearOpBase<Scalar> > &fwdOp,
  const ESupportSolveUse supportSolveUse = SUPPORT_SOLVE_UNSPECIFIED,
  const SolveCriteria<Scalar> *fwdSolveCriteria = NULL,
  const EThrowOnSolveFailure throwOnFwdSolveFailure = THROW_ON_SOLVE_FAILURE,
  const SolveCriteria<Scalar> *adjSolveCriteria = NULL,
  const EThrowOnSolveFailure throwOnAdjSolveFailure = THROW_ON_SOLVE_FAILURE
  )
{
  return inverse<Scalar>(
    linearOpWithSolve<Scalar>(LOWSF,fwdOp,supportSolveUse),
    fwdSolveCriteria, throwOnFwdSolveFailure,
    adjSolveCriteria, throwOnAdjSolveFailure
    );
}

  
template<class Scalar>
void uninitializeOp(
  const LinearOpWithSolveFactoryBase<Scalar> &lowsFactory,
  LinearOpWithSolveBase<Scalar> *Op,
  Teuchos::RCP<const LinearOpBase<Scalar> > *fwdOp = NULL,
  Teuchos::RCP<const PreconditionerBase<Scalar> > *prec = NULL,
  Teuchos::RCP<const LinearOpBase<Scalar> > *approxFwdOp = NULL,
  ESupportSolveUse *supportSolveUse = NULL
  )
{
  Teuchos::RCP<const LinearOpSourceBase<Scalar> > fwdOpSrc;
  Teuchos::RCP<const LinearOpSourceBase<Scalar> > approxFwdOpSrc;
  lowsFactory.uninitializeOp(Op,&fwdOpSrc,prec,&approxFwdOpSrc,supportSolveUse);
  if(fwdOp)
    *fwdOp = ( fwdOpSrc.get() ? fwdOpSrc->getOp() : Teuchos::null );
  if(approxFwdOp)
    *approxFwdOp = ( approxFwdOpSrc.get() ? approxFwdOpSrc->getOp() : Teuchos::null );
}


} // namespace Thyra


#endif // THYRA_LINEAR_OP_WITH_SOLVE_FACTORY_HELPERS_HPP

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