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Re: [eclipselink-users] Transaction listeners? <possibly OT>
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The JPA specification does not offer a solution to this, but EclipseLink has
extended support for SessionEvents and UnitOfWorkChangeSets.
Refer to the SessionEventListener and SessionEventManager, which can be
configured using a SessionCustomizer in your persistence.xml,
http://www.eclipse.org/eclipselink/api/1.2/org/eclipse/persistence/sessions/SessionEventListener.html
http://www.eclipse.org/eclipselink/api/1.2/org/eclipse/persistence/sessions/UnitOfWork.html#getUnitOfWorkChangeSet()
http://www.eclipse.org/eclipselink/api/1.2/org/eclipse/persistence/sessions/changesets/UnitOfWorkChangeSet.html
Syvalta wrote:
>
> Hi,
>
> Is there any way to know what has changed in a transaction, something like
> a transaction listener? Something in lines of "transaction committed,
> entity x updated, entity y removed, entity z persisted". If I understood
> JPA specification correctly, entity listeners are called independent of
> the transaction, so if commit fails entity listeners for some of the
> entities might already got called.
>
> Some use cases I have in mind: change log of the system configuration,
> applying configuration changes to a running system (think for example of
> mail server which can be configured from web ui).
>
> Any ideas/comments/pointers really appreciated.
>
>
-----
http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland
http://www.eclipse.org/eclipselink/
EclipseLink , http://www.oracle.com/technology/products/ias/toplink/
TopLink
Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink ,
http://wiki.oracle.com/page/TopLink TopLink
Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink ,
http://www.nabble.com/EclipseLink-f26430.html EclipseLink
Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence
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