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https://issues.apache.org/jira/browse/OPENJPA-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016438#comment-13016438
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Patrick Linskey commented on OPENJPA-1973:
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Hi,
The former -- if a change happens to an @Unlocked field, the change will be
persisted, but that change will not trigger an optimistic lock check or
increment. Of course, if other fields are changed in the same transaction,
those changes will trigger normal optimistic locking behavior.
-Patrick
> Unlocked field support
> ----------------------
>
> Key: OPENJPA-1973
> URL: https://issues.apache.org/jira/browse/OPENJPA-1973
> Project: OpenJPA
> Issue Type: New Feature
> Components: docs, jdbc, jpa
> Reporter: Patrick Linskey
> Assignee: Patrick Linskey
> Attachments: OPENJPA-1973-with-docs.patch, OPENJPA-1973.patch
>
>
> Often, it's desirable to exclude certain fields from the optimistic locking
> computation. For example, if a PurchaseOrder's lastUpdatedDate field is
> updated every time a line item is added, it may be acceptable to simply use
> the latest value instead of requiring an optimistic lock check / collision.
> Let's add support for such fields.
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