package org.webslinger.servlet;

 import javax.servlet.ServletContext;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import javax.servlet.http.HttpSession;

 public class NestedHttpSessionFactory implements HttpSessionFactory {

     protected final HttpSessionFactory factory;

     public NestedHttpSessionFactory(HttpSessionFactory factory) {

         this.factory = factory;

     }

     public SessionIdLocation getSessionIdLocation(HttpServletRequest request) {

         if (!request.isRequestedSessionIdValid()) return null;

         if (request.isRequestedSessionIdFromCookie()) return SessionIdLocation.COOKIE;

         if (request.isRequestedSessionIdFromURL()) return SessionIdLocation.URL;

         return null;

     }

     public String getRequestedSessionId(HttpServletRequest request) {

         return request.getRequestedSessionId();

     }

     public HttpSessionData getSessionData(HttpServletRequest request, HttpServletResponse response, boolean create) {

         HttpSession session = request.getSession(create);

         if (session == null) return null;

         if (session instanceof HttpSessionImpl) return ((HttpSessionImpl) session).getData();

         return factory.getSessionData(request, response, create);

     }

 }