[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5275) Criteria.setLockMode does not work correctly
Steve Ebersole (JIRA)
noreply at atlassian.com
Thu Dec 29 12:01:21 EST 2011
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44776#comment-44776 ]
Steve Ebersole commented on HHH-5275:
-------------------------------------
Just to clarify...
I get the initial intent (I think) behind {{setLockMode(String alias, LockMode lockMode)}}. I do want to keep the added ability to be able to affect which tables to lock.
And yes I understand that some databases do allow you to specify different lock parameters for different tables in a query. But I do not think that alias->LockMode gives us enough information anyway to be able to really leverage that.
Hence why I suggest about simply tracking aliases to be locked.
> Criteria.setLockMode does not work correctly
> --------------------------------------------
>
> Key: HHH-5275
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5275
> Project: Hibernate Core
> Issue Type: Bug
> Components: core
> Affects Versions: 3.5.2, 3.5.3
> Environment: Hibernate 3.5.2, Oracle 10 (using org.hibernate.dialect.Oracle10gDialect
> Reporter: Björn Moritz
> Assignee: Steve Ebersole
> Priority: Minor
> Fix For: 4.0.1
>
> Attachments: AnotherOracle10gDialect.java, My_Oracle10Dialect.java, My_Oracle10Dialect.java, TestCase.zip
>
> Time Spent: 2h 19m
>
> The LockMode set via Criteria.setLockMode does not generate a ' for update' SQL statement. In the org.hibernate.dialect.Dialect class only the LockOptions are used for determining a possible addition to the SQL statement if using pessimistic locking. This behaviour is different from Hibernate 3.1.3.
> In the supplied TestCase two threads are reading the same database record; one of those threads should use pessimistic locking thereby blocking the other thread. But both threads can read the database record causing the test to fail.
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