Can not use Websphere WebSphereUowTransactionManager with Spring 3.0 on WAS 7.0

Question

We are trying to upgrade from Spring 1.2.8 to Spring 3.0 However when we are trying to configure txManager for Websphere I always get a class cast exception. We tried based on the example provided by IBM which doesn't work. I am using WAS 7.0 and Spring.3.0.5 and hibernate.3.6.jars... Here is the Spring config:

        <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="ewpDataSource" />
        <property name="mappingResources">
            <list>
                <value>com/fme/example/model/Person.hbm.xml</value>
            </list>
        </property>

        <property name="hibernateProperties">
     <props>
         <prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop>
         <prop key="hibernate.show_sql">true</prop>
         <prop key="hibernate.format_sql">false</prop>
         <prop key="hibernate.default_schema">ORIG</prop>
         <prop key="hibernate.cglib.use_reflection_optimizer">false</prop>
         <prop key="hibernate.use_sql_comments">true</prop>
        <prop  key="hibernate.transaction.factory_class">
                   org.hibernate.transaction.JTATransactionFactory
                </prop>
              <prop key="hibernate.transaction.manager_lookup_class">
                 org.hibernate.transaction.WebSphereExtendedJTATransactionLookup
              </prop>
    </props>
    </property>
    </bean>

<!--  Our Data source --->
<bean id="ewpDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="jdbc/TOI_ORIG" />
</bean>

<!--- Get the Web sphere Specific TX manager -->
<bean id="transactionManager"
    class="org.springframework.transaction.jta.WebSphereUowTransactionManager"/>

</beans>  

I read this article and tried exactly as specified. http://www.ibm.com/developerworks/websphere/techjournal/0609_alcott/0609_alcott.html And also tried http://robertmaldon.blogspot.com/2006/09/using-websphere-transaction-manager.html

But we are getting this Exception.

Caused by: java.lang.IllegalStateException: Cannot convert value of type [org.springframework.transaction.jta.WebSphereUowTransactionManager] to required type [javax.transaction.TransactionManager] for property 'transactionManager': no matching editors or conversion strategy found
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:231)
at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:447)

I see that the class org.springframework.transaction.jta.WebSphereUowTransactionManager provided for Websphere doesn't implement javax.transaction.TransactionManager any where in the hierarchy.

Any idea?

Answer 1

I got it working. In addition to the above hibernate settings here is what I did.

    The object of type WebSphereUowTransactionManager is not an instance of 
    javax.transaction.TransactionManager
    but there is superclass method inside WebSphereUowTransactionManager
    called getTransactionManager() 
    this returns object of type javax.transaction.TransactionManager


<bean id="wasUOWTxnManagerObj"
    class="org.springframework.transaction.jta.WebSphereUowTransactionManager"/>

<!-- 
    Now call get getTransactionManager on WebSphereUowTransactionManager
            object.
 -->    
<bean id="tranSactionManager"
    class="javax.transaction.TransactionManager" 
    factory-bean="wasUOWTxnManagerObj"
    factory-method="getTransactionManager">
</bean> 

With this change now you can use WebSphereUowTransactionManager. Hope this helps.