jBPM 4 + Spring + JPA Working, but concerns...

[unsavory]

With the help of this post, I've managed to get jBPM working in our Spring evironment which uses JPA for persistence: http://www.inze.be/andries/2009/05/16/demo-on-spring-integration-with-jbpm4/

jBPM uses the underlying hibernate session of course.

I was wondering if anyone can see any potential problems with the way I've configured this. In order to get it working, I had to remove the current="true" attribute from the hibernate-session configuration. Is this going to cause problems with my transactions?

Here is my jbpm.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?>

<jbpm-configuration>

 <import resource="jbpm.jpdl.cfg.xml" />
 <import resource="jbpm.identity.cfg.xml" />
 <import resource="jbpm.jobexecutor.cfg.xml" />

 <process-engine-context>
 <repository-service />
 <repository-cache />
 <execution-service />
 <history-service />
 <management-service />
 <identity-service />
 <task-service />

 <!-- Here we needed to change the transaction interceptor -->
 <command-service>
 <retry-interceptor />
 <environment-interceptor />
 <spring-transaction-interceptor current="true" />
 </command-service>

 <!-- Added spring as read-context -->
 <script-manager default-expression-language="juel"
 default-script-language="juel"
 read-contexts="execution, environment, process-engine, spring"
 write-context="">
 <script-language name="juel"
 factory="org.jbpm.pvm.internal.script.JuelScriptEngineFactory" />
 </script-manager>

 <authentication />

 <id-generator />
 <types resource="jbpm.variable.types.xml" />

 <address-resolver />

 </process-engine-context>


 <transaction-context>
 <repository-session />
 <db-session />

 <message-session />
 <timer-session />
 <history-session />
 <mail-session>
 <mail-server>
 <session-properties resource="jbpm.mail.properties" />
 </mail-server>
 </mail-session>

 <!-- Need to set explicitly that we don't want jbpm to create sessions -->
 <hibernate-session />
 </transaction-context>
</jbpm-configuration>

When using:

<hibernate-session current="true" />

I was getting the following exception:
org.hibernate.HibernateException: No CurrentSessionContext configured!

This is how I've configured spring to get the hibernate session factory:

<bean id="sessionFactory" factory-bean="entityManagerFactory" factory-method="getSessionFactory"/>

Any thoughts? My main concern is that I may be breaking the jBPM transaction pattern of running inside the current transaction. If I remove current="true", won't jBPM start its own separate transaction?