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 package javax.faces.context;

ExternalContextFactory is a factory object that creates (if needed) and returns new ExternalContext instances, initialized for the processing of the specified request and response objects.

There must be one ExternalContextFactory instance per web application that is utilizing JavaServer Faces. This instance can be acquired, in a portable manner, by calling:

   ExternalContextFactory factory = (ExternalContextFactory)
 public abstract class ExternalContextFactory implements FacesWrapper<ExternalContextFactory> {


If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped. A default implementation is provided that returns null.

     public ExternalContextFactory getWrapped() {
         return null;


Create (if needed) and return an ExternalContext instance that is initialized for the processing of the specified request and response objects, for this web application.

context In servlet environments, the ServletContext that is associated with this web application
request In servlet environments, the ServletRequest that is to be processed
response In servlet environments, the ServletResponse that is to be processed
javax.faces.FacesException if a ExternalContext cannot be constructed for the specified parameters
java.lang.NullPointerException if any of the parameters are null
     public abstract ExternalContext getExternalContext
         (Object contextObject request,
          Object responsethrows FacesException;
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