public class DelegatingPolicyContextHandler
This class implements the jacc PolicyContextHandler interface and provides
the implementation of the handler methods. Handlers are registered and
activated by the PolicyContext class. Policy providers use the PolicyContext
class to activate handlers to obtain (from the container) additional policy
relevant context to apply in their access decisions.
The DelegatingPolicyContextHandler supports arbitrary context keys and delegates
the get of the context to ContextHandlerData object. This allows the various
containers to support different context keys.