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From "Rick Curtis (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2136) NPE when using LiteAutoDetach
Date Tue, 21 Feb 2012 21:28:48 GMT

    [ 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: <openjpa-2.2.0-SNAPSHOT-r422266:1244602 nonfatal general error>
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

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