JTA container managed transaction rollback not working for jaxrs endpoint

Question

Rest Endpoint

<jaxrs:server id="jaxrs" 
              address="http://127.0.0.1:8080/jaxrs">

    <jaxrs:serviceBeans>
        <ref component-id="service1" />
        ...
        ...
        <ref component-id="serviceX" />
    </jaxrs:serviceBeans>
    <jaxrs:providers>
        <ref component-id="runtimeExceptionMapper" />
    </jaxrs:providers>
</jaxrs:server>

Route

<route id="secureBridgeRoute">
    <from uri="jetty:https://0.0.0.0:443/jaxrs?sslContextParametersRef=sslContextParameters&amp;matchOnUriPrefix=true&amp;minThreads=8&amp;maxThreads=16" />
    <transacted ref="JTA_TRANSACTION" />
    <to uri="jetty:http://127.0.0.1:8080/jaxrs?bridgeEndpoint=true&amp;throwExceptionOnFailure=true" />
</route>

DAO

<bean id="dao1" class="com.example.Dao1" activation="eager">
    <jpa:context unitname="PU" property="entityManager" type="TRANSACTION" />
</bean>

Service bean

<bean id="service1" class="com.example.Service1" activation="eager">
    <property name="dao1" ref="dao1" />
    <property name="dao2" ref="dao2" />
    <tx:transaction method="*" value="Required" />
</bean>

Service bean method pseudocode

boolean create(entity1, entity2) {
    dao1.persist(entity1);
    dao2.persist(entity2);
}

When dao2 persist failed, the transaction did not get rolled back. Entity1 is inserted into the DB.

Additional information

1) TransactionManager definition

<reference id="platformTransactionManager" interface="org.springframework.transaction.PlatformTransactionManager" />
<bean id="JTA_TRANSACTION" class="org.apache.camel.spring.spi.SpringTransactionPolicy">
    <property name="transactionManager" ref="platformTransactionManager" />
    <property name="propagationBehaviorName" value="PROPAGATION_REQUIRED" />
</bean>

2) My persistent unit is of type JTA and hibernate as the provider.

3) I have an ExceptionMapper, which when I look into it, the stacktrace shows the transaction indeed is marked for rollback.

4) The service beans are not separated to another bundle.

5) Hibernate autocommit is NOT true.

I am wondering if:

1. CXF OutFaultInterceptor has "eaten" the exception that is supposed to be caught by the container for transaction rollback. As a result, the rollback did not occur.

2. The Entity Manager has to be the same instance shared amongst all DAOs for the rollback to happen.

3. Could it be that I need to separate the service into another bundle?

Appreciate if someone could let me know the correct approach on transaction handling at service layer for cxf jaxrs endpoint.

Answer 1

The original data source is declared in a blueprint bundle, which is using commons-dbcp2. Finally, I got this working using pax-jdbc-pool-dbcp version 0.8.0.

Reference: https://ops4j1.jira.com/wiki/display/PAXJDBC/Pooling+and+XA+support+for+DataSourceFactory

Thanks Christian Schneider for the hint.