Teko_EpetraBlockPreconditioner.hpp

// @HEADER
// *****************************************************************************
//      Teko: A package for block and physics based preconditioning
//
// Copyright 2010 NTESS and the Teko contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef __Teko_EpetraBlockPreconditioner_hpp__
#define __Teko_EpetraBlockPreconditioner_hpp__
 
// #include "Teko_BlockPreconditionerFactory.hpp"
#include "Teko_PreconditionerFactory.hpp"
#include "Teko_EpetraInverseOpWrapper.hpp"
 
namespace Teko {
namespace Epetra {

class EpetraBlockPreconditioner : public EpetraInverseOpWrapper {
 public:
  EpetraBlockPreconditioner(const Teuchos::RCP<const PreconditionerFactory> &bfp);

  virtual void initPreconditioner(bool clearOld = false);

  virtual void buildPreconditioner(const Teuchos::RCP<const Epetra_Operator> &A, bool clear = true);

  virtual void buildPreconditioner(const Teuchos::RCP<const Epetra_Operator> &A,
                                   const Epetra_MultiVector &mv, bool clear = true);

  virtual void rebuildPreconditioner(const Teuchos::RCP<const Epetra_Operator> &A);

  virtual void rebuildPreconditioner(const Teuchos::RCP<const Epetra_Operator> &A,
                                     const Epetra_MultiVector &mv);

  virtual Teuchos::RCP<PreconditionerState> getPreconditionerState();

  virtual Teuchos::RCP<const PreconditionerState> getPreconditionerState() const;
 
 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;
 
  EpetraBlockPreconditioner();
  EpetraBlockPreconditioner(const EpetraBlockPreconditioner &);
 
  // Teuchos::RCP<const BlockPreconditionerFactory> preconFactory_;
  Teuchos::RCP<const PreconditionerFactory> preconFactory_;
  Teuchos::RCP<Thyra::PreconditionerBase<double> > preconObj_;
  bool firstBuildComplete_;
};
 
}  // end namespace Epetra
}  // end namespace Teko
 
#endif