Teko_GaussSeidelPreconditionerFactory.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_GaussSeidelPreconditionerFactory_hpp__
#define __Teko_GaussSeidelPreconditionerFactory_hpp__

#include "Teuchos_RCP.hpp"

#include "Teko_BlockPreconditionerFactory.hpp"
#include "Teko_BlockInvDiagonalStrategy.hpp"
#include "Teko_Utilities.hpp"

namespace Teko {

typedef enum {GS_UseLowerTriangle,GS_UseUpperTriangle} TriSolveType;

class GaussSeidelPreconditionerFactory : public BlockPreconditionerFactory {
   public:
  


      GaussSeidelPreconditionerFactory(TriSolveType solveType,const LinearOp & invD0,const LinearOp & invD1);

      GaussSeidelPreconditionerFactory(TriSolveType solveType,const RCP<const BlockInvDiagonalStrategy> & strategy);

      GaussSeidelPreconditionerFactory();


      LinearOp buildPreconditionerOperator(BlockedLinearOp & blo,BlockPreconditionerState & state) const;

   protected: 
      using BlockPreconditionerFactory::buildPreconditionerOperator;

      Teuchos::RCP<const BlockInvDiagonalStrategy> invOpsStrategy_;
      TriSolveType solveType_;

      virtual void initializeFromParameterList(const Teuchos::ParameterList & pl);
};

} // end namespace Teko

#endif