Provide additional optimistic lock options
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Key: OPENJPA-1451
URL: https://issues.apache.org/jira/browse/OPENJPA-1451
Project: OpenJPA
Issue Type: Improvement
Affects Versions: 2.0.0-M3
Reporter: Grzegorz Borkowski
The standard @Version -based optimistic locking in JPA is too much limited in
many cases. Often you need to have optimistic lock more column(cell)-level then
record-level based. It can be accomplished by using old value of the modified
column(s) in WHERE clause, instead of using @Version column. Other JPA
implementations already provide such extensions, it would be good if OpenJPA
had it too.
E.g. in Hibernate it'd done by:
@org.hibernate.annotations.Entity(optimisticLock=DIRTY)
and in EclipseLink:
@org.eclipse.persistence.annotations.OptimisticLocking(type=CHANGED_COLUMNS)
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