D-Net

    @RequestMapping(value = "/{stakeholderId}/{topicId}/{categoryId}/toggle-status", method = RequestMethod.POST)

    public Boolean toggleCategoryStatus(@PathVariable("stakeholderId") String stakeholderId,

                                        @PathVariable("topicId") String topicId,

                                        @PathVariable("categoryId") String categoryId) {

        log.debug("toggle category status (isActive)");

        log.debug("Stakeholder: "+stakeholderId + " - Topic: "+topicId + " - Category: "+categoryId);

        Category category = categoryDAO.findById(categoryId);

        if (category == null) {

            // EXCEPTION - Category not found

            throw new EntityNotFoundException("Toggle category status: Category with id: "+categoryId+" not found");

        }

        category.setIsActive(!category.getIsActive());

        this.toggleCategory(stakeholderId, topicId, category);

        return category.getIsActive();

    }

    @RequestMapping(value = "/{stakeholderId}/{topicId}/{categoryId}/toggle-access", method = RequestMethod.POST)

    public Boolean toggleCategoryAccess(@PathVariable("stakeholderId") String stakeholderId,

                                        @PathVariable("topicId") String topicId,

                                        @PathVariable("categoryId") String categoryId) {

        log.debug("toggle category access (isPublic)");

        log.debug("Stakeholder: "+stakeholderId + " - Topic: "+topicId + " - Category: "+categoryId);

        Category category = categoryDAO.findById(categoryId);

        if (category == null) {

            // EXCEPTION - Category not found

            throw new EntityNotFoundException("Toggle category access: Category with id: "+categoryId+" not found");

        }

        category.setIsPublic(!category.getIsPublic());

        this.toggleCategory(stakeholderId, topicId, category);

        return category.getIsPublic();

    }

    public void toggleCategory(String stakeholderId, String topicId, Category category) {

        Stakeholder<String> stakeholder = stakeholderDAO.findById(stakeholderId);

        if (stakeholder != null) {

            Topic<String> topic = topicDAO.findById(topicId);

            if (topic != null) {

                if (stakeholder.getTopics().contains(topicId)) {

                    if (topic.getCategories().contains(category.getId())) {

                        categoryDAO.save(category);

                        log.debug("Category toggled!");

                    } else {

                        // EXCEPTION - Category not found in Stakeholder: stakeholder.getAlias(); -> Topic: topic.getAlias();

                        throw new PathNotValidException("Toggle category: Category with id: "+category.getId()+" not found in Topic: "+topicId);

                    }

                } else {

                    // EXCEPTION - Topic not found in Stakeholder: stakeholder.getAlias();

                    throw new PathNotValidException("Toggle category: Topic with id: "+topicId+" not found in Stakeholder: "+stakeholderId);

                }

            } else {

                // EXCEPTION - Topic not found

                throw new EntityNotFoundException("Toggle category: Topic with id: "+topicId+" not found");

            }

        } else {

            // EXCEPTION - Stakeholder not found

            throw new EntityNotFoundException("Toggle category: Stakeholder with id: "+stakeholderId+" not found");

        }

    }