Hi, all
I'm troubling how to use JTA in Hibernate Transaction.
Please let me know it.
My arcitecture is below.
StrutsAction<-->StatelessSessionBean<-->Command<-->Dao(hibernate)<-->DB

I'd like to use JTA for transaction.
In this case, how should I write dao source?
Need I use 'session.beginTransaction'?

regards
hirovic

Hibernate version:
3.1.3
Mapping documents:
<?xml version="1.0" ?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd" >
<hibernate-configuration>
<session-factory>
<!--PostgresSQL JDBC Driver connection -->
<property name="connection.driver_class">org.postgresql.Driver
</property>
<property name="connection.url">jdbc:postgresql://***</property>
<property name="connection.username">**</property>
<property name="connection.password">**</property>
<property name="hibernate.connection.datasource">java:/**.DS</property>
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>
<property name="hibernate.transaction.manager_lookup_class">org.hibernate.transaction.JBossTransactionManagerLookup</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="show_sql">true</property>
<property name="use_outer_join">true</property>
<!-- Mapping files -->
<mapping resource="EMP.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Code between sessionFactory.openSession() and session.close():

Emp emp = new Emp();
emp.setEmpno(new Integer(100));
emp = (Emp)session.load(Emp.class, emp.getEmpno());
emp.setJob("Sales");
session.update(emp);

Are you running your code in a JBoss container? If you are, and you've told JBoss about JTA, then no, you don't need to use session.beginTransaction(). JBoss uses JTA for application transactions, so once you have those configured, you shouldn't need to use database transactions any more.

I'm afraid I don't know how to configure JBoss to use JTA though. It's possible that what you've already done is enough, or there may be a JBoss configuration file that you have to update, too.