[ https://issues.apache.org/jira/browse/OPENJPA-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212967#comment-13212967 ] Rick Curtis commented on OPENJPA-2136: -------------------------------------- Committed revision 1292040 to 2.2.x. > NPE when using LiteAutoDetach > ------------------------------ > > Key: OPENJPA-2136 > URL: https://issues.apache.org/jira/browse/OPENJPA-2136 > Project: OpenJPA > Issue Type: Bug > Components: kernel > Affects Versions: 2.0.0, 2.1.1, 2.2.0, 2.3.0 > Reporter: Rick Curtis > Assignee: Rick Curtis > Fix For: 2.3.0, 2.2.1 > > > I encountered a NPE[2] today when using the LiteAutoDetach[1] configuration property. The steps required to cause this problem is as follows: > - Configure LiteAutoDetach for your PU. > - Find a non-transactional Entity. > - Clear the EntityManager. > - Begin / commit transaction. > The problem is that LiteAutoDetach doesn't properly clean up the EntityManager while it is performing lite detachment. State is left in BrokerImpl._pending set which is then incorrectly used post em.clear. It also appears that there are a number of other BrokerImpl datastructures that *should* have been cleaned up on clear / detachall. > [1] http://openjpa.apache.org/builds/latest/docs/docbook/manual.html#ref_guide_detach_state > [2] Caused by: org.apache.openjpa.persistence.PersistenceException: null > at org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1998) > at org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:81) > at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1514) > at org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:933) > at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:570) > ... 24 more > Caused by: java.lang.NullPointerException > at org.apache.openjpa.Customer.pcProvideField(Customer.java) > at org.apache.openjpa.kernel.StateManagerImpl.provideField(StateManagerImpl.java:3161) > at org.apache.openjpa.kernel.StateManagerImpl.preFlush(StateManagerImpl.java:2980) > at org.apache.openjpa.kernel.PDirtyState.beforeFlush(PDirtyState.java:38) > at org.apache.openjpa.kernel.StateManagerImpl.beforeFlush(StateManagerImpl.java:1053) > at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2112) > at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:2072) > at org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1990) > ... 28 more -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira