Teko_StaticLSCStrategy.hpp

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

#include "Teko_LSCStrategy.hpp"

namespace Teko {
namespace NS {

class LSCPrecondState; // forward declaration

// constant, not very flexible strategy for driving LSCPreconditioenrFactory
class StaticLSCStrategy : public LSCStrategy {
public:

   // Staiblized constructor
   StaticLSCStrategy(const LinearOp & invF,
                     const LinearOp & invBQBtmC,
                     const LinearOp & invD,
                     const LinearOp & invMass);
 
   // Stable constructor
   StaticLSCStrategy(const LinearOp & invF,
                     const LinearOp & invBQBtmC,
                     const LinearOp & invMass);

   virtual void buildState(BlockedLinearOp & A,BlockPreconditionerState & state) const {}

   virtual LinearOp getInvF(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invF_; }

   virtual LinearOp getInvBQBt(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invBQBtmC_; }

   virtual LinearOp getInvBHBt(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invBQBtmC_; }

   virtual LinearOp getOuterStabilization(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invD_; }

   virtual LinearOp getInnerStabilization(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return Teuchos::null; }

   virtual LinearOp getInvMass(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invMass_; }

   virtual LinearOp getHScaling(const BlockedLinearOp & A,BlockPreconditionerState & state) const
   { return invMass_; }

   virtual bool useFullLDU() const { return false; }

   virtual void setSymmetric(bool isSymmetric) { }

protected:
   // protected memebers
   LinearOp invF_;
   LinearOp invBQBtmC_;
   LinearOp invD_;
   LinearOp invMass_;
};

} // end namespace NS
} // end namespace Teko

#endif