public PortalControlStructures(HttpServletRequest req, HttpServletResponse res, ChannelManager cm, IUserPreferencesManager ulm) {
if (req instanceof ChannelHttpServletRequestWrapper) {
this.req = req;
}
else {
this.req = new ChannelHttpServletRequestWrapper(req);
}
this.res = res;
this.session = null;
this.cm = cm;
this.ulm = ulm;