@Test
public void storeLoad() throws Exception {
UserTransaction tx = TM.getUserTransaction();
try {
tx.begin();
EntityManager em = JPA.createEntityManager();
Long DEPARTMENT_ID;
{
Department department = new Department("Sales");
em.persist(department);
UserId id = new UserId("johndoe", null); // Null?
User user = new User(id);
user.setDepartment(department); // Required!
em.persist(user);
DEPARTMENT_ID = department.getId();
}
tx.commit();
em.close();
tx.begin();
em = JPA.createEntityManager();
{
UserId id = new UserId("johndoe", DEPARTMENT_ID);
User user = em.find(User.class, id);
assertEquals(user.getDepartment().getName(), "Sales");
}
tx.commit();
em.close();
} finally {
TM.rollback();
}
}
