NOX::Direction::Factory Class Reference

Factory to build direction objects derived from NOX::Direction::Generic. More...

#include <NOX_Direction_Factory.H>

Public Member Functions
	Factory ()
	Constructor.
	~Factory ()
	Destructor.
Teuchos::RCP< NOX::Direction::Generic >	buildDirection (const Teuchos::RCP< NOX::GlobalData > &gd, Teuchos::ParameterList &params)
	Factory to build a direction object.

Related Symbols
(Note that these are not member symbols.)
Teuchos::RCP< NOX::Direction::Generic >	buildDirection (const Teuchos::RCP< NOX::GlobalData > &gd, Teuchos::ParameterList &params)

Detailed Description

Factory to build direction objects derived from NOX::Direction::Generic.

Parameters

• "Method" <std::string> Name of the direction. Valid choices are:

  • "Newton" NOX::Direction::Newton
  • "Steepest Descent" NOX::Direction::SteepestDescent
  • "NonlinearCG" NOX::Direction::NonlinearCG
  • "Broyden" NOX::Direction::Broyden
  • "Tensor" PRERELEASE ONLY! NOX::Direction::Tensor
  • "Modified-Newton" PRERELEASE ONLY! NOX::Direction::ModifiedNewton
  • "Quasi-Newton" PRERELEASE ONLY! NOX::Direction::QuasiNewton
  • "User Defined" - see below

• "User Defined Constructor" - see below

• "Newton" <sublist> Parameters to build a NOX::Direction::Newton object.
• "Steepest Descent" <sublist> Parameters to build a NOX::Direction::SteepestDescent object.
• "NonlinearCG" <sublist> Parameters to build a NOX::Direction::NonlinearCG object.
• "Broyden" <sublist> Parameters to build a NOX::Direction::Broyden object.
• "Tensor" <sublist> Parameters to build a NOX::Direction::Tensor object.
• "Modified-Newton" <sublist> Parameters to build a NOX::Direction::ModifiedNewton object.
• "Quasi-Newton" <sublist> Parameters to build a NOX::Direction::QuasiNewton object.
• "User Defined Direction Factory" < RCP<NOX::Direction::UserDefinedFactory> > RCP to a NOX::Direction::UserDefinedFactory derived object. This factory object is used to build user defined direction objects.

Using a User-Defined Direction

The user has the option of passing in a user-defined direction. First, they must implement their own direction, deriving from the base class interface NOX::Direction::Generic:

class MyDirection : public NOX::Direction::Generic {
 
  // Ctor that takes the standard direction arguments.
  MyDirection(const Teuchos::RCP<NOX::GlobalData>& gd,
              Teuchos::ParameterList& params);
 
  .
  .
  .
 
};

Next they must write a factory to build their object, deriving from the NOX::Direction::UserDefinedFactory base class interface:

class MyFactory {
  MyDirFactory();
  ~MyDirFactory();
   Teuchos::RCP<NOX::Direction::Generic> buildDirection(const Teuchos::RCP< NOX::GlobalData > &gd, Teuchos::ParameterList &params)
   .
   .
   .
};

Then under the "Direction" parameter sublist, they need to set the method to "User Defined" and register the factory:

using namespace Teuchos; // for RCP and ParameterList
ParameterList& dir_params = p.sublist("Direction");
RCP<NOX::Direction::UserDefinedFactory> dir_facotry = rcp(new MyDirectionFactory);
dir_params.set("Method", "User Defined");
dir_params.set("User Defined Direction Factory", dir_factory);

It is critical that the user defined factory be set in the parameter list as a base class type object: NOX::Direction::UserDefinedFactory.

Member Function Documentation

buildDirection()

Teuchos::RCP< NOX::Direction::Generic > NOX::Direction::Factory::buildDirection	(	const Teuchos::RCP< NOX::GlobalData > &	gd,
		Teuchos::ParameterList &	params )

Factory to build a direction object.

Parameters

gd	A global data pointer that contains the top level parameter list. Without storing this inside the direction object, there is no guarantee that the second parameter params will still exist. It can be deleted by the top level RCP.
params	Sublist with direction construction parameters.

Friends And Related Symbol Documentation

buildDirection()

Teuchos::RCP< NOX::Direction::Generic > buildDirection ( const Teuchos::RCP< NOX::GlobalData > & gd, Teuchos::ParameterList & params )

related

Nonmember function to build a direction object.

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The documentation for this class was generated from the following files:

• NOX_Direction_Factory.H
• NOX_Direction_Factory.C