recherche par id concode_field_sep EntityManager em concode_field_sep List<User> findByHobbies concode_elem_sep List<User> findByHobbies concode_elem_sep List<User> findByName concode_elem_sep List<User> findAll concode_elem_sep void addUserVisit
User function ( Long arg0 ) { return em . find ( User . class , arg0 ) ; }