Re: Optimistic locking on delete: appendOptimisticLockingAttributes calls getRetainedSnapshot() but may be null for simple deleteObject()

From: Mike Kienenberger (mkienen..laska.net)
Date: Tue Feb 22 2005 - 10:27:07 EST

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    > On Feb 16, 2005, at 10:08 PM, Mike Kienenberger wrote:
    > > It looks like the solution is to use getCachedSnapshot() instead (which
    > > first returns getRetainedSnapshot() if available).
    > > Does this make sense?

    Andrus Adamchik <andru..bjectstyle.org> wrote:
    > On the one hand it does. On the other hand what if there is no cached
    > snapshot either (e.g. some snapshots are invalidated manually or
    > removed when a shared cache reaches its size limit)? One solution I see
    > is to retain snapshots of deleted objects (just like we do for the
    > modified ones) if optimistic locking is involved.

    That sounds good to me, but I have no idea how it's done :)

    I've added this to the issue along with flattened relationships. I'm not
    sure what further progress I will make on either issue.

    -Mike

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