Different context objects in ADF

Context Object Name	Who is creating it	Life Cycle phase	Scope	Comments
FacesContext	Faces Servlets	At beginning of each request processing	Per Request	Created by Faces Servlets and contains all the per request state information.This static class provides the request context information for the application instance and grants developers access to application-wide settings, messages to be displayed to the end user, lifecycle methods, and the displayed view root.
ExternalContext	?	?	?	Wraps some of the external servlet functionality and information, such as the servlet context, cookie maps, the remote user, the request locale, page redirect, and much more. If developers don’t find what they are looking for within the set of methods exposed on the ExternalContext, they can use a call to getResponse or to getRequest to return instances of HttpServletResponse and HttpServletRequest objects. The ExternalContext object is accessible from FacesContext.
ADFContext
BindingContext	ADFBinding filter	At the beginning of the first request	Once per session
SecurityContext	JPS security filter	?	?
ControllerContext
Application