[rules-users] Drools Flow : Persistence :- Getting Null Pointer Exception in JPAWorkItemManager.java

Hi, When I try to run a sample test case using drools-persistence.jar it works successfully. But when I try to include the persistence in my OFBiz application, I am getting null pointer exception in class JPAWorkItemManager.java. java.lang.NullPointerException at org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem( JPAWorkItemManager.java:85). Null Pointer is because of getting EntityManager object as NULL. In the below line of JPAWorkItemManager.java EntityManager em = (EntityManager) this.workingMemory .getEnvironment().get( EnvironmentName.ENTITY_MANAGER ); the em is null. Because of this I am getting Null Pointer exception when it try to run the code if (workItemInfo == null) { workItemInfo = em.find(WorkItemInfo.class, id); } Can you tell me why I getting NPE when I try to run the jar file in my application. While the code run successfully when I try to run sample test case for that. Please help me to get through the situation. Thanks & Regards Pardeep Ruhil L&T Infotech Ltd Mumbai Ph: +919820283884 Larsen & Toubro Infotech Ltd. www.Lntinfotech.com This Document is classified as: L&T Infotech Proprietary L&T Infotech Confidential L&T Infotech Internal Use Only L&T Infotech General Business This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system. ______________________________________________________________________