Are you talking about jBPM5?
Yes there is. For Action Handlers you have the concept of WorkItem, That will represent a node inside your process. Unfortunately, the BPMN2 specification doesn't define hook points to onEntry and OnExit actions. Luckly the jBPM5 team has implemented the following extensions:
Thanks, yes I forgot to mention I was asking about jbpm5. Thank you very much.