Examples with Visitor org.olat.core.util.tree.Visitor used on opensource projects

Example 56 with Visitor

use of org.olat.core.util.tree.Visitor in project openolat by klemens.

the class ForumCourseNodeWebService method getForums.

/**
 * Retrieves metadata of the published course node
 * @response.representation.200.qname {http://www.example.com}forumVOes
 * @response.representation.200.mediaType application/xml, application/json
 * @response.representation.200.doc The course node metadatas
 * @response.representation.200.example {@link org.olat.modules.fo.restapi.Examples#SAMPLE_FORUMVOes}
 * @response.representation.401.doc The roles of the authenticated user are not sufficient
 * @response.representation.404.doc The course or parentNode not found
 * @param courseId The course resourceable's id
 * @param httpRequest The HTTP request
 * @return The persisted structure element (fully populated)
 */
@GET
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public Response getForums(@PathParam("courseId") Long courseId, @Context HttpServletRequest httpRequest) {
    final ICourse course = CoursesWebService.loadCourse(courseId);
    if (course == null) {
        return Response.serverError().status(Status.NOT_FOUND).build();
    } else if (!CourseWebService.isCourseAccessible(course, false, httpRequest)) {
        return Response.serverError().status(Status.UNAUTHORIZED).build();
    }
    UserRequest ureq = getUserRequest(httpRequest);
    final Set<Long> subcribedForums = new HashSet<Long>();
    NotificationsManager man = NotificationsManager.getInstance();
    List<String> notiTypes = Collections.singletonList("Forum");
    List<Subscriber> subs = man.getSubscribers(ureq.getIdentity(), notiTypes);
    for (Subscriber sub : subs) {
        Long forumKey = Long.parseLong(sub.getPublisher().getData());
        subcribedForums.add(forumKey);
    }
    final List<ForumVO> forumVOs = new ArrayList<ForumVO>();
    new CourseTreeVisitor(course, ureq.getUserSession().getIdentityEnvironment()).visit(new Visitor() {

        @Override
        public void visit(INode node) {
            if (node instanceof FOCourseNode) {
                FOCourseNode forumNode = (FOCourseNode) node;
                ForumVO forum = createForumVO(course, forumNode, subcribedForums);
                forumVOs.add(forum);
            }
        }
    }, new VisibleTreeFilter());
    ForumVOes voes = new ForumVOes();
    voes.setForums(forumVOs.toArray(new ForumVO[forumVOs.size()]));
    voes.setTotalCount(forumVOs.size());
    return Response.ok(voes).build();
}