How to set up multi-level transaction managers using Spring + DBUnit + JUnit

In a nutshell

My command line Java application copies data from one data source to another without using XA. I configured two separate data sources and would like to try JUnit, which can roll back data from both data sources. I use DBUnit to load data into the "source" database, but I cannot force this to be rolled back. I can get the "target" data source for rollback.

My code

Given this configuration ...

<tx:annotation-driven />

<!-- note the default transactionManager name on this one -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource"     ref="dataSourceA" />
</bean>

<bean id="transactionManagerTarget" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource"     ref="dataSourceB" />
</bean>

and this code ...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:resources/spring-context.xml",
                                "classpath:resources/spring-db.xml"})  
@Transactional
@TransactionConfiguration(transactionManager = "transactionManagerTarget", defaultRollback = true) 
public class MyIntegrationTest {

    @Autowired
    private MyService service;

    @Autowired
    @Qualifier("dataSourceA")
    private DataSource dataSourceA;

    private IDataSet loadedDataSet;

    /**
     * Required by DbUnit
     */
    @Before
    public void setUp() throws Exception {
        SybaseInsertIdentityOperation.TRUNCATE_TABLE.execute(getConnection(), getDataSet());
        SybaseInsertIdentityOperation.INSERT.execute(getConnection(), getDataSet());
    }

    /**
     * Required by DbUnit
     */
    protected IDataSet getDataSet() throws Exception {
        loadedDataSet = DbUnitHelper.getDataSetFromFile(getConnection(), "TestData.xml");
        return loadedDataSet;
    }

    /**
     * Required by DbUnit
     */
    protected IDatabaseConnection getConnection() throws Exception{
        return new DatabaseConnection(dataSourceA.getConnection());
    }   

    @Test
    public void testSomething() {

        // service.doCopyStuff();

    }

}

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