The lifecycle-factory element contains the fully qualified class name of the concrete LifecycleFactory implementation class that is called when FactoryFinder.getFactory(LIFECYCLE_FACTORY) is called.
To add a lifecycle factory:
Select faces-config.xml in the Project Explorer of the J2EE perspective.
The JSF Application Configuration editor opens.
Select the Other tab of the editor.
The Other page appears.
Expand the Lifecycle Factory section.
Click Add.
The Find Type dialog box opens.
Type the first letter of the type you want to use in the Select a type field.
A list of available types beginning with the letter you typed appears in the Matching types list.
Select the type that you want to use and click OK.
The lifecycle factory is added to the list.