@Transactional(readOnly = true) public Result listProblems( long contestId, long page, String sortBy, String orderBy, String filterString) throws ContestNotFoundException { Contest contest = contestService.findContestById(contestId); if (!isAllowedToSuperviseProblems(contest)) { return ContestControllerUtils.getInstance() .tryEnteringContest(contest, IdentityUtils.getUserJid()); } boolean canDelete = ContestControllerUtils.getInstance().isManagerOrAbove(contest, IdentityUtils.getUserJid()); Page<ContestProblem> pageOfContestProblems = contestProblemService.getPageOfProblemsInContest( contest.getJid(), page, PAGE_SIZE, sortBy, orderBy, filterString, null); List<String> problemJids = pageOfContestProblems .getData() .stream() .map(cp -> cp.getProblemJid()) .collect(Collectors.toList()); Map<String, String> problemSlugsMap = SandalphonResourceDisplayNameUtils.buildSlugsMap( JidCacheServiceImpl.getInstance().getDisplayNames(problemJids)); LazyHtml content = new LazyHtml( listProblemsView.render( contest.getId(), pageOfContestProblems, page, sortBy, orderBy, filterString, canDelete, problemSlugsMap)); content.appendLayout( c -> heading3WithActionsLayout.render( Messages.get("problem.list"), new InternalLink[] { new InternalLink( Messages.get("commons.create"), routes.ContestProblemController.addProblem(contestId)), new InternalLink( Messages.get("problem.refresh"), routes.ContestProblemController.refreshProblems(contestId)) }, c)); appendSubtabsLayout(content, contest); ContestControllerUtils.getInstance() .appendTabsLayout(content, contest, IdentityUtils.getUserJid()); UrielControllerUtils.getInstance().appendSidebarLayout(content); appendBreadcrumbsLayout( content, contest, new InternalLink( Messages.get("problem.list"), routes.ContestProblemController.viewProblems(contest.getId()))); UrielControllerUtils.getInstance().appendTemplateLayout(content, "Contest - Problems"); return UrielControllerUtils.getInstance().lazyOk(content); }