hibernate, wie man erstellen Sie createalias left join?

@Entity
@Table(name = "BOOKTEST")
@NamedQueries({@NamedQuery(name = "Booktest.findAll", query = "SELECT b FROM Booktest b"), @NamedQuery(name = "Booktest.findById", query = "SELECT b FROM Booktest b WHERE b.id = :id"), @NamedQuery(name = "Booktest.findByBookName", query = "SELECT b FROM Booktest b WHERE b.bookName = :bookName")})
public class Booktest implements Serializable {
 @ManyToOne
    private Topictest topictestId;   //foreign key
    @JoinColumn(name = "USERTEST_ID", referencedColumnName = "ID")
    @ManyToOne
    private Usertest usertestId;  //foreign key
}

wenn ich ausführen

Sitzung.createCriteria(Booktest.class).createAlias("usertestId", "usertestId",Kriterien.LEFT_JOIN)
.Liste();

den sql_log noch zeigen select * from booktest,usertest eher als select * from booktest left join usertest, wie zu tun, left join?

versucht non sequitor beiden Fällen und ich noch immer unter ohne "left join"

Hibernate: select this_.ID as ID13_2_, this_.BOOK_NAME as BOOK2_13_2_, this_.TOP
ICTEST_ID as TOPICTEST4_13_2_, this_.USERTEST_ID as USERTEST3_13_2_, usertestid1
_.ID as ID14_0_, usertestid1_.TOPIC_NAME as TOPIC2_14_0_, usertest4_.ID as ID15_
1_, usertest4_.USER_NAME as USER2_15_1_ from BOOKTEST this_, TOPICTEST usertesti
d1_, USERTEST usertest4_ where this_.TOPICTEST_ID=usertestid1_.ID and this_.USER
TEST_ID=usertest4_.ID(+)