hi all
i was spending lot of time with configuring hbm.xml file to use JTA transactions.
still i couldn't fix it. Can any one send me a simple working example of how configure and use JTA transaction.

thanks
wijitha....

Are you using BMT or CMT? In case of BMT you will have to set the following properties:



and if CMT is used:



The transaction manager lookup class is dependent on what app server you use.



Farzad-

hi
I'm using BMT transaction. i changed my hibernate.hbm.xml file according to your reply bt now i'm getting this error.

hibernate,hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/bank_ex</property>
<property name="connection.username">root</property>
<property name="connection.password">wijithaw</property>
<property name="connection.pool_size">1</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">true</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.current_session_context_class">jta</property>

<property name="hbm2ddl.auto">create</property>

<mapping resource="dev/Account.hbm.xml"/>
<mapping resource="dev/Customer.hbm.xml"/>

</session-factory>


java code

Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = null;
try {
tx = session.beginTransaction();
Account account = (Account) session.load(Account.class, accountNum);
account.withdraw(amount);
tx.commit();
} catch (RuntimeException e) {
//To change body of catch statement use File | Settings | File Templates.
tx.rollback();
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
System.out.println("Error Message :" + e.getMessage() + ".\n");
} finally {
session.close();
}

Hibernate.Util class

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static {
try {
// Create the SessionFactory from hibernate.cfg.xm
sessionFactory = new Configuration().configure().buildSessionFactory();

} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("***********Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}

public static SessionFactory getSessionFactory() {

return sessionFactory;
}

}



error message

[java] Feb 1, 2008 9:15:22 AM org.hibernate.util.NamingHelper getInitialContext
[java] INFO: JNDI InitialContext properties:{}
[java] ***********Initial SessionFactory creation failed.org.hibernate.HibernateException: Could not locate TransactionManager
[java] Exception in thread "main" java.lang.ExceptionInInitializerError
[java] at util.HibernateUtil.<clinit>(Unknown Source)
[java] at dev.BankManager.storeCustomer(Unknown Source)
[java] at dev.BankManager.createCustomer(Unknown Source)
[java] at dev.BankManager.addAccount(Unknown Source)
[java] at dev.BankRannable.run(Unknown Source)
[java] at dev.BankManager.main(Unknown Source)
[java] Caused by: org.hibernate.HibernateException: Could not locate TransactionManager
[java] at org.hibernate.transaction.JNDITransactionManagerLookup.getTransactionManager(JNDITransactionManagerLookup.java:26)
[java] at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:257)
[java] at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1054)
[java] ... 6 more
[java] Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
[java] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
[java] at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
[java] at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)
[java] at javax.naming.InitialContext.lookup(InitialContext.java:392)
[java] at org.hibernate.transaction.JNDITransactionManagerLookup.getTransactionManager(JNDITransactionManagerLookup.java:23)
[java] ... 8 more
[java] Java Result: 1

BUILD SUCCESSFUL

can u figure out the mis take i have done.

thanks
wijitha...

Where are you running this? Inside JBoss?

Farzad-

i think no. How do i run this inside JBoss.

wijitha

You will need to package either a Java enterprise application or a java web application so that you can deploy in a application server like JBoss. In order to use a transaction manager you will also need to be in an environment that has a transaction manager. From your code I guess this is a standalone application and in a standalone application these two services are not present unless configured to be so.



Farzad-