ManyToMany select query in JPA2(JPQL) - many-to-many

Question

I have two tables: User and Role in ManyToMany relationship.
#Entity
#Table(name = "user")
public class User implements Serializable {
#Id
#Column(name = "user_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long userId;
#ManyToMany
#JoinTable(name = "user_role",
joinColumns = #JoinColumn(name = "user_id"),
inverseJoinColumns = #JoinColumn(name = "role_id"))
private Set<Role> roles;
//getters, setters
}
and
#Entity
#Table(name = "role")
public class Role implements Serializable {
#Id
#Column(name = "role_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long roleId;
#Column(name = "role_code")
private String roleCode;
#ManyToMany(mappedBy = "roles")
#JsonIgnore
private Set<User> users;
//getters,setters
}
I want select all users and ALL HIS roles if user have role for example 'ROLE_USER'.
I did it in native sql but i would like to use JPQL or CriteriaQuery.
I tried in JPQL(changing earlier fetching type to EAGER becouse in subquery I can't use join fetch):
public List<User> findUsersByRole(String roleName, int startNumber, int endNumber) {
Query q = em.createQuery("select u from User u join fetch u.roles r WHERE u.userId in (SELECT uu.userId FROM User uu join uu.roles rr WHERE rr.roleCode like :roleName)")
.setParameter("roleName", roleName)
.setFirstResult(startNumber)
.setMaxResults(endNumber);
return q.getResultList();
}
and it works as I want but is it possible without changing Fetching type to EAGER?
Thank you for response.

Answer 1

You can do:
public List<User> findUsersByRole(String roleName, int startNumber, int endNumber) {
Query q = em.createQuery("select u from User u join fetch u.roles join u.roles r WHERE r.roleCode like :roleName")
.setParameter("roleName", roleName)
.setFirstResult(startNumber)
.setMaxResults(endNumber);
return q.getResultList();
}