Roll back with HibernateDAOSupport class

[springappy]

Incase of DAO s extended by HibernateDAOSupport classes, I tried transcations to work with annotation based declaration:
-defined transaction in confg.xml
eg
<!-- enable the configuration of transactional behavior based on annotations -->
<tx:annotation-driven transaction-manager="txManager"/>

<!-- The PlatformTransactionManager for Hibernate-->
<bean id="txManager" class="org.springframework.orm.hibernate3.Hibernat eTransactionManager">
<property name="sessionFactory">
<ref bean="daoservice.SessionFactory" />
</property>
</bean>


-annotate the method with: @Transactional(propagation=Propagation.REQUIRES_NE W)


For testing I throwed NullPointerException within DAO method
Eg :
String test = null;
if(test.length() >1){
log.error("Throwing error");
}

Transcation was not rolled back even after exception...
does hibernateDAOSupport classes support enclosing Transction as stated above.

[satyam225]

Can you please post the complete code in service and dao classes.

[springappy]

Service Class :

public class Insert{
private InsertDAO dao;

@Transactional(propagation=Propagation.REQUIRES_NE W)
public Long insertValue(abcVO abc){
dao.insertValue(abc)
}
}


DAO Class:

public class InsertDAO extends HibernateDaoSupport{

@Transactional(propagation=Propagation.REQUIRED)
public Long insertValue(abcVO abc) {
try{
getHibernateTemplate().save(abc);
String strCheck = null;
if(strCheck.length() == 0 )
log.error("Throwing error manually");

}catch(Exception e){
}
}

Here strCheck.length() will throw a runtime exception so my transaction should be roll backed . But it is not happening.