From TransactionProxyFactoryBean to a Declarative transaction management? - spring

Question

I want to migrate from old style of transaction management with TransactionProxyFactoryBean to a Declarative transaction management recommended by spring.
So that will be possible to avoid exceptions with transactions that appear from time to time.
This is my configuration xml file:
<beans xmlns=...>
<context:annotation-config/>
<context:component-scan base-package="prof" />
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/classes/hibernate.cfg.xml</value>
</property>
</bean>
<import resource="prof-dao-spring.xml" />
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
<property name="transactionManager">
<ref bean="transactionManager"/>
</property>
<property name="transactionAttributes">
<props>
<prop key="save*">PROPAGATION_REQUIRED</prop>
...
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
<bean id="ProfileService" parent="baseTransactionProxy">
<property name="target">
<bean class="tv.clever.hibernate.service.ProfileService"></bean>
</property>
</bean>
</beans>
ProfileService looks like:
#Component
public class ProfileService {
#Autowired
#Qualifier("baseDAO")
protected BaseDAO baseDAO;
private static ProfileService profileService;
public ProfileService() {
setProfileService(this);
}
public void setProfileService(ProfileService ps) {
profileService = ps;
}
public void save(final Collection transientObjects) {
baseDAO.save(transientObjects);
}
...
}
From where do I need to start?

Answer 1

Assuming you want to use annotations slap a #Transactional on your service class, add <tx:annotation-driven /> to your configuration and remove the TransactionalProxyFactoryBean declaration and all beans using that as a parent.
Additional pro-tips:
Use #Service for service classes and #Repository for daos
<context:annotation-config /> is implied by <context:component-scan />
Your service
#Service
#Transactional
public class ProfileService { ... }
Configuration
<beans xmlns=...>
<context:component-scan base-package="prof" />
<import resource="prof-dao-spring.xml" />
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/classes/hibernate.cfg.xml</value>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<tx:annotation-driven />
</beans>
Restart application.