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Posted to dev@openjpa.apache.org by "Albert Lee (Closed) (JIRA)" <ji...@apache.org> on 2012/02/03 18:23:54 UTC
[jira] [Closed] (OPENJPA-2107) ManagedCache conflict due adding an
entity 2 times in the same query.
[ https://issues.apache.org/jira/browse/OPENJPA-2107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Albert Lee closed OPENJPA-2107.
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> ManagedCache conflict due adding an entity 2 times in the same query.
> ---------------------------------------------------------------------
>
> Key: OPENJPA-2107
> URL: https://issues.apache.org/jira/browse/OPENJPA-2107
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 2.0.1, 2.1.0, 2.2.0
> Reporter: Mark Struberg
> Assignee: Heath Thomann
> Fix For: 2.2.0
>
> Attachments: OPENJPA-2107.patch
>
>
> I have a complex query which creates the following error:
> <openjpa-2.2.0-tiss-2-rexported nonfatal user error> org.apache.openjpa.persistence.ArgumentException: Cannot load object with id "26301". Instance "at.ac.tuwien.tiss.curriculum.be.entities.DefaultCourse@6e267b76" with the same id already exists in the L1 cache. This can occur when you assign an existing id to a new instance, and before flushing attempt to load the existing instance for that id.
> FailedObject: at.ac.tuwien.tiss.curriculum.be.entities.DefaultCourse-26301
> at org.apache.openjpa.kernel.ManagedCache.add(ManagedCache.java:126)
> at org.apache.openjpa.kernel.BrokerImpl.setStateManager(BrokerImpl.java:4117)
> at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:391)
> at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:340)
> at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:378)
> It seems that this entity gets loaded from the db twice in the same query.
> While hitting the problem, the StateManagers have the following _flags:
> orig _flags= 602 = 0010 0101 1010 SAVE LOADED READ_LOCKED OID_ASSIGNED FLUSHED
> sm _flags= 16 = 0000 0001 0000 READ_LOCKED
> And it is really only 1 instance which makes this problem. If I set the 'orig' variable to null in the debugger, the test runs fine.
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