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Posted to dev@openjpa.apache.org by "Fay Wang (JIRA)" <ji...@apache.org> on 2010/11/06 00:02:43 UTC
[jira] Updated: (OPENJPA-1762) javax.persistence.lock.scope
EXTENDED doesn't properly lock join tables
[ https://issues.apache.org/jira/browse/OPENJPA-1762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fay Wang updated OPENJPA-1762:
------------------------------
Attachment: OPENJPA-1726-1.patch
This patch will fix the PessimisticLockManager by locking the join table.
> javax.persistence.lock.scope EXTENDED doesn't properly lock join tables
> -----------------------------------------------------------------------
>
> Key: OPENJPA-1762
> URL: https://issues.apache.org/jira/browse/OPENJPA-1762
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc
> Affects Versions: 2.0.1, 2.1.0
> Environment: Derby and DB2
> Reporter: Rick Curtis
> Attachments: OPENJPA-1726-1.patch, OPENJPA-1762.PATCH
>
>
> I have a simple failing unit test that exercises a small portion of the javax.persistence.lock.scope=Extended property. The failing scenario is as follows:
> ManyToMany relationship between A(owner) and B.
> Em1 - Find A, no lock
> Em1 - Refresh A, PESSIMISTIC_FORCE_INCREMENT and javax.persistence.lock.scope=PessimisticLockScope.EXTENDED -- this SHOULD lock the join table for A_B
> Em2 - Find, lock B. Remove B. should block while trying to remove from Join table.
> I will post the unit test which demonstrates the problem shortly.
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