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// Teko: A package for block and physics based preconditioning
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#ifndef __Teko_InverseFactoryOperator_hpp__
#define __Teko_InverseFactoryOperator_hpp__
#include "Teuchos_ConstNonconstObjectContainer.hpp"
#include "Teko_InverseFactory.hpp"
#include "Teko_EpetraInverseOpWrapper.hpp"
namespace Teko {
namespace Epetra {
/** \brief A single Epetra wrapper for all operators constructed
* from an inverse operator.
*
* This class uses the Teko inverse factories to
* build an Epetra_Operator that behaves like the inverse operatotr.
* This is done by using the InverseFactory, and letting
* it build whatever operator is neccessary. Thus the Epetra
* "layer" is just a single class that handles any generic
* InverseFactory.
*/
class InverseFactoryOperator : public EpetraInverseOpWrapper {
public:
/** \brief Constructor that takes the InverseFactory that will
* build the operator.
*
* Constructor that takes the InverseFactory that will
* build the operator.
*/
InverseFactoryOperator(const Teuchos::RCP<const InverseFactory> & bfp);
/** \brief Build the underlying data structure for the inverse operator.
*
* Build the underlying data structure for the inverse operator. This
* permits the manipulation of the state object for an inverse operator.
*
* \param[in] clearOld If true any previously constructed
* operator will be wiped out and
* a new one created. If false, anoperator
* will be created only if the current one is
* empty (i.e. <code>initPreconditioner</code>
* had not been called).
*/
virtual void initInverse(bool clearOld=false);
/** \brief Build this inverse operator from an Epetra_Operator
* passed in to this object.
*
* Build this inverse opeerator from an Epetra_Operator
* passed in to this object. If this Epetra_Operator
* is an EpetraOperatorWrapper object then the block Thyra components
* are extracted.
*
* \param[in] A The Epetra source operator.
* \param[in] clear If true, than any previous state saved by the operator
* is discarded.
*/
virtual void buildInverseOperator(const Teuchos::RCP<const Epetra_Operator> & A,bool clear=true);
/** \brief Build this inverse operator from an Epetra_Operator
* passed in to this object.
*
* Build this inverse opeerator from an Epetra_Operator
* passed in to this object. If this Epetra_Operator
* is an EpetraOperatorWrapper object then the block Thyra components
* are extracted.
*
* \param[in] A The Epetra source operator.
* \param[in] clear If true, than any previous state saved by the operator
* is discarded.
*/
virtual void buildInverseOperator(const Teuchos::RCP<Epetra_Operator> & A,bool clear=true);
/** \brief Rebuild this inverse from an Epetra_Operator passed
* in this to object.
*
* Rebuild this inverse from an Epetra_Operator passed
* in this to object. If <code>buildInverseOperator</code> has not been called
* the inverse operator will be built instead. Otherwise efforts are taken
* to only rebuild what is neccessary. Also, that this Epetra_Operator
* may be an EpetraOperatorWrapper object, so the block Thyra components
* can be extracted.
*
* \param[in] A The Epetra source operator. (Should be a EpetraOperatorWrapper!)
*/
virtual void rebuildInverseOperator(const Teuchos::RCP<const Epetra_Operator> & A);
/** \brief Rebuild this inverse from an Epetra_Operator passed
* in this to object.
*
* Rebuild this inverse from an Epetra_Operator passed
* in this to object. If <code>buildInverseOperator</code> has not been called
* the inverse operator will be built instead. Otherwise efforts are taken
* to only rebuild what is neccessary. Also, that this Epetra_Operator
* may be an EpetraOperatorWrapper object, so the block Thyra components
* can be extracted.
*
* \param[in] A The Epetra source operator. (Should be a EpetraOperatorWrapper!)
*/
virtual void rebuildInverseOperator(const Teuchos::RCP<Epetra_Operator> & A);
/** Extract the forward op used by <code>buildInverseOperator</code>
* or <code>rebuildInverseOperator</code>.
*/
Teuchos::RCP<const Epetra_Operator> getForwardOp() const { return fwdOp_.getConstObj(); }
/** Extract the forward op used by <code>buildInverseOperator</code>
* or <code>rebuildInverseOperator</code>.
*/
Teuchos::RCP<Epetra_Operator> getNonconstForwardOp() const { return fwdOp_.getNonconstObj(); }
protected:
Teuchos::RCP<const Thyra::LinearOpBase<double> > extractLinearOp(const Teuchos::RCP<const Epetra_Operator> & A) const;
Teuchos::RCP<const MappingStrategy> extractMappingStrategy(const Teuchos::RCP<const Epetra_Operator> & A) const;
InverseFactoryOperator();
InverseFactoryOperator(const InverseFactoryOperator &);
Teuchos::RCP<const Teko::InverseFactory> inverseFactory_;
Teko::ModifiableLinearOp invOperator_;
bool firstBuildComplete_;
Teuchos::ConstNonconstObjectContainer<Epetra_Operator> fwdOp_;
bool setConstFwdOp_;
};
} // end namespace Epetra
} // end namespace Teko
#endif
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