try {
                entityManager.getTransaction().commit();
                entityManager.getTransaction().begin();
            } catch (RollbackException rex) {
                rex.printStackTrace();
                entityManager.getTransaction().begin();
                List<splashtemplateda.Content> merged = new ArrayList<splashtemplateda.Content>(list.size());
                for (splashtemplateda.Content c : list) {
                    merged.add(entityManager.merge(c));
                }
                list.clear();
                list.addAll(merged);
            }
            return null;
        }