Hibernation table mappings with annotations

I'm just starting out with Spring / Hibernate, and I'm trying to understand how hibernate maps objects to tables. I am currently working with the following classes to test CRUD using sleep mode:

@Entity
@Table(name = "Users")
public class UserEntity implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    private String firstName;
    private String lastName;
    private int age;

    //Getters, setters, etc.
}


@Repository
public class UserDAOImpl implements UserDAO {
    @Autowired
    HibernateTemplate hibernateTemplate;

    @Override
    public UserEntity getUser(String firstName, String lastName) {
        List<UserEntity> users = hibernateTemplate.find("from UserEntity u where u.firstName = ? and u.lastName = ?", firstName, lastName);
        return (users.size() == 0 ? null : users.get(0));
    }

    @Override
    public void saveOrUpdate(UserEntity user) {
        hibernateTemplate.saveOrUpdate(user);
    }
}

The code above works fine, but I'm confused about how UserEntity maps to a table. More specifically, when hibernateTemplate.find("from UserEntity u where u.firstName = ? and u.lastName = ?", firstName, lastName)I call, I get the following message in the log:

Hibernate: select userentity0_.id as id0_, userentity0_.age as age0_, userentity0_.firstName as firstName0_, userentity0_.lastName as lastName0_ from Users userentity0_ where userentity0_.firstName=? and userentity0_.lastName=?

When hibernateTemplate.find()I call, I need to specify the UserEntity table , while the log reports a query for the Users table (as I indicated in the @Table annotation).

UserEntity , UserEntity. ? , HQL SQL-?

+3
2

HQL, OO. UserEntity. hibernate SQL-, , , . , . UserEntity, UserEntity. , SQL , HQL , .

+1

, .

@Table , ( ( ).

( orm) , - . , - "" .

+1

All Articles