Hey Jaf, On Sat, Jul 16, 2011 at 4:23 AM, etc3 <[email protected]> wrote: > Michael, > > If I use the default trx manager in neo4j, what connection pool driver > should be used in Tomcat?
The internal implementation of Neo4j's transaction manager is not currently exposed for use by 3rd party resources. This means that, while capable of coordinating a 2PC you cannot use it to do so as a standalone TM like JOTM. The work we have done is actually the reverse of that - it substitutes Neo4's TM for an externally provided one, since both our transactional resources (neo store and lucene indexes) are XA compatible. For you this means that you have to use an external TM (like Atomikos and JBossTM that you mentioned - we have also tested SpringSource's implementation and JOTM and found all four of them to work) to coordinate your XA datasources. Doing so for Tomcat however is something we have not tried yet - the blog posts Michael mentioned should cover a lot of ground nevertheless, the only thing not covered is integration with the container, the rest should work. I will try and replicate your scenario locally and see what trouble may rise but I am really interested to see how it went for you. Hope that helped a bit, CG > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Michael Hunger > Sent: Friday, July 15, 2011 9:05 PM > To: Neo4j user discussions > Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager > > Yes they were added. > > The XA-TX-Manager is configurable in Neo4j (defaults to our own but if you > have an external one like JOTM or Atomikos) then you can configure those to > be used. > > Example implementation for JOTM: > https://github.com/digitalstain/JOTMServiceProvider > > Implementation in neo4j is here: > https://github.com/neo4j/community/tree/master/kernel/src/main/java/org/neo4 > j/kernel/impl/transaction > > Cheers > > Michael > > Am 16.07.2011 um 02:43 schrieb etc3: > >> Thanks, Micheal. >> >> The blog post from Chris was from last year; were those changes for >> JOTM ever added to neo4j? >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Michael Hunger >> Sent: Friday, July 15, 2011 8:00 PM >> To: Neo4j user discussions >> Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager >> >> Springsource also provides/is working on their own tomcat based XA TM. >> Perhaps you'd like to check that out. >> (http://forum.springsource.org/showthread.php?76843-JTA-for-Tc-Server&; >> p=2583 >> 83#post258383) >> >> Otherwise there is only JOTM left. >> >> Neo4j can integrate with those TM. >> See also these blog posts by our team member Chris Gioran: >> http://digitalstain.blogspot.com/2010/11/using-jotm-as-transactionmana >> ger-in >> .html >> http://digitalstain.blogspot.com/2011/02/springy-ouside-graphy-inside. >> html >> http://digitalstain.blogspot.com/2010/11/neo4j-internals-transactions- >> part-3 >> -as.html >> >> Internally it uses also 2PC with the nioneo store and lucene. >> >> Cheers >> >> Michael >> >> Am 16.07.2011 um 01:37 schrieb etc3: >> >>> We plan on using neo4j as the database for our website, which will >>> run on Tomcat. Also, we'll be using ActiveMQ for sending messages >>> within neo4j transactions, so that leaves the question of what to use >>> for the transaction manager. Atomikos, JBossTM comes to mind, are we >>> missing >> anything obvious? >>> Does neo4j provide anything out-of-box for transactions management? >>> >>> >>> >>> Thanks >>> >>> Jaf >>> >>> _______________________________________________ >>> Neo4j mailing list >>> [email protected] >>> https://lists.neo4j.org/mailman/listinfo/user >> >> _______________________________________________ >> Neo4j mailing list >> [email protected] >> https://lists.neo4j.org/mailman/listinfo/user >> >> _______________________________________________ >> Neo4j mailing list >> [email protected] >> https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
