I don’t quite remember but looking at it, it looks like I needed something that would work on all cases: CMT or non CMT (excludes the use of UserTransaction), be able to start a transaction if none has been started already. It’s rooted in https://hibernate.atlassian.net/browse/OGM-56 <https://hibernate.atlassian.net/browse/OGM-56>
> On 14 Jan 2015, at 10:10, Gunnar Morling <gun...@hibernate.org> wrote: > > 2015-01-14 9:27 GMT+01:00 Emmanuel Bernard <emman...@hibernate.org > <mailto:emman...@hibernate.org>>: > Probably. Needs exploring. > > https://hibernate.atlassian.net/browse/OGM-718 > <https://hibernate.atlassian.net/browse/OGM-718> > > Btw. why has OGM its own JTATransactionManagerTransaction instead of using > ORM's existing JtaTransaction? > > > > On 13 Jan 2015, at 19:18, Gunnar Morling <gun...@hibernate.org > > <mailto:gun...@hibernate.org>> wrote: > > > > Hi, > > > > For a demo I have an OGM application which defines a persistence unit with > > transaction type RESOURCE_LOCAL. > > > > I thus assumed I wouldn't have to add a JTA implementation to the class > > path, but actually I'm getting a CNFE (see [1] for the complete trace): > > > > ClassNotFoundException: Could not load requested class : > > com.arjuna.ats.jta.TransactionManager > > > > Indeed Arjuna is what we use as TM by default. It is set by OGM's > > JtaPlatform implementation which in turn is used by transactions created by > > OGM's default TransactionFactory [2]. > > > > Unless I'm doing something wrong configuration-wise, I feel that requiring > > a JTA implementation for a non-transactional backend such as MongoDB is > > confusing and may make users ask whether OGM is doing the right thing. > > > > Would it be feasible to to provide an "OGM local" TransactionImplementor + > > TransactionFactory to be used in such cases where the store does not > > support transactions (so no rollbacks etc.), but we'd "only" need a trigger > > for writing out changes to the datastore? > > > > Any thoughts? > > > > --Gunnar > > > > [1] https://gist.github.com/gunnarmorling/ba193caecb7d5cdbd0a4 > > <https://gist.github.com/gunnarmorling/ba193caecb7d5cdbd0a4> > > [2] > > https://github.com/hibernate/hibernate-ogm/blob/master/core/src/main/java/org/hibernate/ogm/transaction/impl/OgmTransactionFactoryInitiator.java#L42 > > > > <https://github.com/hibernate/hibernate-ogm/blob/master/core/src/main/java/org/hibernate/ogm/transaction/impl/OgmTransactionFactoryInitiator.java#L42> > > _______________________________________________ > > hibernate-dev mailing list > > hibernate-dev@lists.jboss.org <mailto:hibernate-dev@lists.jboss.org> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev > > <https://lists.jboss.org/mailman/listinfo/hibernate-dev> > > _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
