Hi Lasse, Poet has excellent material on ODMG in their community area: http://community.fastobjects.com/community_documentation_oss61.htm
You have to sign in, but it's really worth it. cheers, Thomas > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Thursday, September 11, 2003 2:43 PM > To: OJB Users List > Subject: Antwort: RE: Transactions with PB-API > > > > Hello Oliver, > > no, I wanted to use several threads, each having an own transaction. > I just missed the fact that I can get several brokers from the > factory. It works fine now. > > Btw, are there any resources about the ODMG standard available online > (beside the book referral on the odmg-website...) ? > > Lasse > > > > > > |---------+---------------------------> > | | [EMAIL PROTECTED]| > | | de | > | | | > | | 11.09.03 09:26 | > | | Bitte antworten | > | | an "OJB Users | > | | List" | > | | | > |---------+---------------------------> > > >------------------------------------------------------------- > ------------------------------------------------------------------| > | > | > | An: [EMAIL PROTECTED] > | > | Kopie: > | > | Thema: RE: Transactions with PB-API > | > > >------------------------------------------------------------- > ------------------------------------------------------------------| > > > > Hello, > > > -----Original Message----- > > From: Roland Carlsson [mailto:[EMAIL PROTECTED] > > > > the broker have tre methods to handles transactions.. > > > > beginTransaction(); > > broker.commitTransaction(); > > broker.abortTransaction(); > > > > how can I use several (concurrent) transactions using the PB-API. > > > With the ODMG-API I do something like > > > > > > Transaction tx = odmg.newTransaction(); > > > tx.begin(); > > > ... > > do you plan to have several transactions in the same thread? > > In the ODMG standard, there is the concept of the "current > transaction" > of a given thread, i.e., there is an association between the threads > and transactions. For the sake of ODMG, it is advisable to have > one thread per one transaction and, conversely, one transactiob per > thread. (I am talking about concepts, I have not experiences > about what OJB does). > > For the PersistenceBroker API, there is a similar association, but I > do > not know exactly what happens if several thread share one txn or vice > > versa. So I would give the same advice. > > Olli > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
