Here
is how you can use Hibernate in your programs.
Typical Hibernate programs begin with
configuration that is required for Hibernate.
Hibernate can be configured in two ways.
Programmatically and Configuration file
based. In Configuration file based mode,
hibernate looks for configuration file
“hibernate.cfg.xml” in the claspath. Based
on the resource mapping provided hibernate
creates mapping of tables and domain objects.
In the programmatic configuration method,
the details such as JDBC connection details
and resource mapping details etc are supplied
in the program using Configuration API.
Following
example shows programmatic configuration
of hibernate.
Configuration
config = new Configuration()
.addResource("org/applabs/hibernate/quickstart/Applabsuser.hbm.xml") |
|
Configuration
config = new Configuration()
.addClass(org.hibernate.quickstart.Applabsuser.class)
.setProperty("hibernate.dialect",
"org.hibernate.dialect. MySQLMyISAMDialect")
.setProperty("hibernate.connection.driver_class",
" org.gjt.mm.mysql.Driver")
. . . SessionFactory sessions = config.buildSessionFactory(); |
In configuration file based approach,
“hibernate.cfg.xml” is placed in the classpath,
Following Hibernate code can be used in
this method.
SessionFactory
sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.openSession();
AppLabsUser user = new AppLabsUser();
Transaction tx = session.beginTransaction();
user.setUserCreationDate(new Date());
user.setUserEmail("user@allapplabs.com");
user.setUserFirstName("userFirstName");
user.setUserLastName("userLastName");
user.setUserName("userName-1");
user.setUserPassword("userPassword");
session.saveOrUpdate(user);
tx.commit();
session.close(); |
|
