Module module = ModuleData.getModule(ModuleHelper.class);
User user = UserData.getUser();
int accessLevel = module.getAccessLevel(user.getRole());
if(accessLevel < ModuleHelper.ADD)
throw new UserException();
Page page = PageData.getPage(pageDTO.getUri());
if(page != null)
throw new ServerException("Page with uri " + "<a href='" + page.getUri() + "'>" + page.getUri() + "</a> already exists. Please enter a different uri.");