I cheated a bit here and extended the Home service so that it checks for a
Visit, if there is one - it'll load a page I have called LoggedInHome
instead of Home. I also extended the Page service so that if it ever sees a
request for a page called Home, it deferes the request to the Home service.
Geoff.
public class ORCAHomeService extends HomeService {
public boolean service(IEngineServiceView engine, IRequestCycle cycle,
ResponseOutputStream output)
throws RequestCycleException, ServletException, IOException {
Visit visit = (Visit) engine.getVisit();
boolean isLoggedIn = visit != null && visit.getLoggedInUsername() !=
null;
IPage home;
if (isLoggedIn) {
home = cycle.getPage("LoggedInHome");
} else {
home = cycle.getPage(IEngine.HOME_PAGE);
}
home.validate(cycle);
// If it validates, then render it.
cycle.setPage(home);
if (isLoggedIn) {
engine.renderResponse(cycle, output);
} else {
((ORCAEngine) engine).renderHomePageResponse(cycle, output);
}
return true;
}
}
public class ORCAPageService extends PageService {
public boolean service(IEngineServiceView engine, IRequestCycle cycle,
ResponseOutputStream output)
throws RequestCycleException, ServletException, IOException {
RequestContext context = cycle.getRequestContext();
String[] serviceContext = getServiceContext(context);
if (serviceContext == null || serviceContext.length != 1)
throw new ApplicationRuntimeException(Tapestry.getString(
"service-single-parameter", IEngineService.PAGE_SERVICE));
String pageName = serviceContext[0];
RequestContext rcontext = cycle.getRequestContext();
HttpServletResponse response = rcontext.getResponse();
if ("Home".equals(pageName) || "LoggedInHome".equals(pageName)) {
IEngineService hservice =
engine.getService(AbstractService.HOME_SERVICE);
reutrn hservice.service(engine, cycle, output);
}
IPage page = cycle.getPage(pageName);
page.validate(cycle);
cycle.setPage(page);
engine.renderResponse(cycle, output);
return true;
}
}
Geoffrey Longman
Intelligent Works Inc.
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