Yes, we made the transaction manager pluggable, with a default implementation for JTA and Spring. You can take a look at the drools-persistence-jpa module, there is a org.drools.persistence.session.TransactionManager, that is the interface you would have to implement, with the org.drools.persistence.session.JtaTransactionManager as a sample implementation. Kris Quoting Rui Tang <tangrui.cn(a)gmail.com&gt;: Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

When I asked this question, I meant I don't want to use any frameworks or application servers. But for now I think I should consider to use jBoss or such to manage cross session tx. I'll take look at this Spring's implementation, because I think there should be an independent implementation in Drools to use non-jta when making persistence. Thank you. 2010/11/16, Anatoly <webakaunt(a)gmail.com&gt;: -- 从我的移动设备发送 唐睿

as it turned out if one uses EntityManager configuration as I described in my previous post and at the same time runs actions async by spawning new threads then marking workItems as being completed can be a little tricky as it's very easy to see "EntityManager has been closed" exception. The solution to this problem is to use knowledgeSession that has been created when the task was being created. i.e. MyWorkItemHandler implements WorkItemHandler { //pass this session as a part of registering workitemhandler private StatefullKnowledgeSession knowledgeSession; public void executeWorkItem(final WorkItem workItem, final WorkItemManager workItemManager){ Thread t = new Thread(){ @Override public void run() { action.execute(processContext, domainInstance); //don't use passes workItemManager as its entityManager has been already closed (we're running tasks async) knowledgeSession.getWorkItemManager().completeWorkItem(workItem.getId(), action.getResults()); } }; //start action async t.start(); } } -- View this message in context: http://drools.46999.n3.nabble.com/Can-Drools-Flow-Persistence-Work-withou... Sent from the Drools: User forum mailing list archive at Nabble.com.