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