SLSB Participate in Spring Transaction

[koalalam]

Hi,

I have a Spring bean "A" which insert some data into the database and then it calls a SLSB. The SLSB is implemented using Spring supported EJB class "AbstractStatelessSessionBean" with the business interface being another Spring bean "B". While bean "A" calls the SLSB through the Spring supported EJB class "SimpleRemoteStatelessSessionProxyFactoryBean" .

The problem is bean "B" cannot find the data inserted by "A". The SLSB is a CMT with transaction type "Supports" and transaction propagation is set to transaction manger used by both bean "A" and "B".

According to Spring documentation, Spring transaction could be propagated to EJB. I have read from other threads that it could be done through EJB remoting. However, I didn't know what EJB remoting is? Anyone know what configuration is missing? Thanks.

Regards,
Koala

[Juergen Mayrbaeurl]

Can you post some code (interfaces) and context definitions?
When using declarative transactions, starting the transaction from bean "A" and handling it over to "B", it should work correctly.
Which EJB Container do you use?

[koalalam]

I am using WebLogic Server 8.1 as J2EE server. Shown below is the Spring context definitions:

Transaction Proxy used by Bean "A":

<bean id="txProxyTemplate" abstract="true"
class="org.springframework.transaction.interceptor .TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>

Spring Bean "A":

<bean id="locationSlipManager" parent="txProxyTemplate">
<property name="target">
<bean
class="LocationSlipManagerImpl">
<property name="primeMoverJobOperationManager">
<ref bean="primeMoverJobOperationSLSB" />
</property>
</bean>
</property>
</bean>

SLSB for Bean "B":

<bean id="primeMoverJobOperationSLSB" class="org.springframework.ejb.access.SimpleRemote StatelessSessionProxyFactoryBean">
<property name="jndiName">
<value>ejb/PrimeMoverJobOperation</value>
</property>
<property name="businessInterface">
<value>PrimeMoverJobOperationManager</value>
</property>
</bean>

Transaction Manager used by Bean "B":

<bean id="transactionManager"
class="org.springframework.transaction.jta.JtaTran sactionManager">
</bean>

Transaction Proxy used by Bean "B":

<bean id="txProxyTemplate" abstract="true"
class="org.springframework.transaction.interceptor .TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>

Spring Bean "B":

<bean id="primeMoverJobOperationManager" parent="txProxyTemplate">
<property name="target">
<bean id="primeMoverJobOperationManagerImpl" class="PrimeMoverJobOperationManagerImpl">
</bean>
</property>
</bean>


What's going wrong with the configuration above? Thanks.

[Juergen Mayrbaeurl]

I think you're Transaction Mgr setup is not complete. It should look like:

<!-- Transaction manager that delegates to JTA (for a transactional JNDI DataSource) -->
<bean id="containerTX" class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName">
<value>java:/TransactionManager</value>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.transaction.jta.JtaTran sactionManager">
<property name="transactionManager">
<ref local="containerTX"/>
</property>
<property name="userTransactionName">
<value>UserTransaction</value>
</property>
</bean>

The configuration from above works with JBoss. Maybe WebLogic has different JNDI locations.

Juergen

[Rod Johnson]

Use WebLogicJtaTransactionManager on WebLogic. It uses proprietary BEA APIs for closer integration.

[jettro]

Interesting is the part that you are using CMT, since with CMT it is possible that you cannot access the transaction via spring. I know that with oracle application server you cannot access the UserTransaction if you are using CMT.