[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-1635) optimistic locking doesn't work if you change version manually in hibernate object

[Steve Ebersole (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Ebersole closed HHH-1635.
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Closing stale resolved issues

> optimistic locking doesn't work if you change version manually in hibernate object
> ----------------------------------------------------------------------------------
>
>                 Key: HHH-1635
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1635
>             Project: Hibernate Core
>          Issue Type: Bug
>    Affects Versions: 3.0.5
>         Environment: Running on debian sarge (stable) linux with spring framework 1.2.7.
>            Reporter: Ryan
>
> Essentially i am changing the version value in hibernate manually to an old version in the process of copying modified values from a DTO/View object.  I use the version value from when I originally requested the view dto data.  From my point of view, I would expect that this would cause Optimistic locking exceptions when the data/version was already changed by another client update.  This seems like a common pattern.  It does not work in this manner, it seems to always use the version in cache from the load and only consider the version change i make as an updage value rather then an actual change to the version.  
> It seems to me if hibernate intends to just ignore my version changes completely then what is the point of us even having a version property in our beans, why doesn't hibernate just use like a proxy and completely automate versioning, it is like it is teasing us with a property that is there but we can't use?
> I have asked this problem in the forum and I have seen it asked before in both the forum and the bug tracker.  I have spent some time searching for a detailed explination of why this doesn't work how I would expect it to and can't.
> The topic in the forum I have opened.
> http://forums.hibernate.org/viewtopic.php?t=957539&highlight=&sid=5c748ead66c106716e2653c98409e279
> PLEASE before you reject this i would appreciate and explination i really searched the forums heavily but couldn't find anything explaining this.  Clearly I must not understand transaction management and optimistic locking as well as I should, and I just don't understand why this doesn't work like I am intending it to.

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