ajout méthode récupérer les abonnés d'un thread

WEB-INF/src/dao/ThreadDAO.java

@@ -56,6 +56,29 @@ public class ThreadDAO {
         return messages;
     }
 
+    public List<User> getFollowersOfThread(int threadId) throws SQLException{
+        ArrayList<User> followers = new ArrayList<>();
+        try {
+            PreparedStatement ps = this.con.prepareStatement("""
+            SELECT u.userID, u.username, u.password FROM userAccount AS u
+            INNER JOIN follow AS f ON f.userID=u.userID
+            WHERE f.threadID_follow = ?
+            """);
+            ps.setInt(1, threadId);
+            ResultSet rs = ps.executeQuery();
+            while(rs.next()){
+                int userId = rs.getInt(1);
+                String username = rs.getString(2);
+                String password = rs.getString(3);
+
+                followers.add(new User(userId, username, password));
+            }
+        } catch (SQLException sqle) {
+            sqle.getStackTrace();
+        }
+        return followers;
+    }
+
     // Créer un thread
     public void createThread(User user, String threadName) throws SQLException {
         PreparedStatement ps = this.con.prepareStatement("INSERT INTO thread (userID_thread, threadName) VALUES(?, ?)");