update DAO with manytomany

src/main/java/metier/Session.java

@@ -29,7 +29,7 @@ public class Session implements Serializable {
         this.quizzs = quizzs;
     }
 
-    @OneToMany
+    @OneToMany(mappedBy="session")
     public ArrayList<Quizz> getQuizzs(){
         return this.quizzs;
     }

src/main/java/metier/Utilisateur.java

@@ -11,7 +11,7 @@ public class Utilisateur implements Serializable {
     private int id;
 
     private String name;
-    private Session session;
+    private List<Session> session;
     private String email;
     private String password;
 
@@ -48,11 +48,16 @@ public class Utilisateur implements Serializable {
     }
 
     @ManyToMany
-    public Session getSession() {
+    @JoinTable(
+            name="utilisateur_session",
+            joinColumns = @JoinColumn(name="utilisateur_id"),
+            inverseJoinColumns = @JoinColumn(name = "session_pin")
+    )
+    public List<Session> getSession() {
         return session;
     }
 
-    public void setSession(Session session){
+    public void setSession(List<Session> session){
         this.session = session;
     }