0002033: Amber One2Many and Many2Many relations doesn't work

Notes
(0002319) westrupp 10-01-07 12:17	Amber is working fine. The OneToMany/ManyToMany examples have been updated. Both servlets need a transaction enclosing the query and the getCourses()/getStudents() calls. Otherwise, the query would return detached entities and any attempt to retrieve the relations would return empty collections. // ManyToManyServlet.java ... public void service(HttpServletRequest req, HttpServletResponse res) throws java.io.IOException, ServletException { // ... try { _entityManager.getTransaction().begin(); Query allStudent = _entityManager.createQuery("SELECT o FROM Student o"); List students = allStudent.getResultList(); for (int i = 0; i < students.size(); i++) { Student student = (Student) students.get(i); out.println("<h3>" + student.getName() + "</h3>"); Collection courses = student.getCourses(); // ... } } finally { _entityManager.getTransaction().commit(); } }

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