On 21/08/07, Padraic Hannon <[EMAIL PROTECTED]> wrote: > I concur, relational semantics should be buried within the persistence > managers. However, I think that one can still delegate transaction > handling using JTA to the container rather than using synchronization > and connection.autocommit(false).
One should keep in mind that there is one good reason for JR to synchronize writes and handle transactions itself: if users simultaneously change the same node, these changes may either be conflicting or non-conflicting and resolving this requires quite a deep knowledge of a node's internal semantics. If one removes synchronization completely and relies on the database to tell whether such a change is allowed or not, I can very well imagine that one ends up either with non-conflicting changes being rejected, or with conflicting changes being silently merged. Dominique
