merge

src/main/java/fr/istic/taa/jaxrs/DAO/QuizzDAO.java

@@ -10,14 +10,14 @@ public class QuizzDAO extends AbstractJpaDao<Integer, Quizz> {
         this.setClass(Quizz.class);
     }
 
-    public void deleteAllQustion(int quizzId) {
+    public void deleteAllQuestion(int quizzId) {
         EntityTransaction t = em.getTransaction();
         try {
             if (!t.isActive()) t.begin();
             Quizz quizz = em.find(Quizz.class, quizzId);
             if (quizz != null) {
                 quizz.getQuestions().clear();
-                em.merge(quizz); // ✅ merge instead of persist
+                em.merge(quizz);
             }
             t.commit();
         } catch (Exception e) {

src/main/java/fr/istic/taa/jaxrs/DAO/UtilisateurDAO.java

@@ -31,7 +31,7 @@ public class UtilisateurDAO extends AbstractJpaDao<Integer, Utilisateur> {
             if (s == null || u == null) {
                 throw new IllegalArgumentException("User or session not found");
             }
-            if (!u.getSession().contains(s)) {
+            if (!u.getSessions().contains(s)) {
                 u.getSessions().add(s);
                 em.merge(u);
             }

src/main/java/fr/istic/taa/jaxrs/rest/QuizzResource.java

@@ -152,7 +152,7 @@ public class QuizzResource {
         if (quizz == null) {
             return Response.status(Response.Status.NOT_FOUND).build();
         }
-        quizzDAO.deleteAllQustion(quizzId);
+        quizzDAO.deleteAllQuestion(quizzId);
         quizzDAO.update(quizz);
         return Response.status(Response.Status.OK).build();
     }