Krishnan, thanks for your comment. Unfortunately, as a student in a non-profit project, I cannot afford developing for commercial application servers. I'm using JBoss at the moment, and I'd like to stick to EJB 1.1 standard features to remain as implementation-independent as I can. It just wasn't clear for me whether I missed something in the docs or entity relationships are not a standard implemented feature in EJB 1.1.
Best regards, Christopher On Wed, Nov 28, 2001 at 02:31:43PM +0100, Krishnan Subramanian wrote: > Christopher, > > EJB 1.1 did not mandate relationships between entity beans. > > However some AppServer vendors (such as us) have implemented > this in our products. Our 4.5.x version of the AppServer supports > all the relationships you would expect (one: to-one, to many, > many-to-many etc with your own preferences for navigability > as well i.e., unidirectional/bi-directional etc). > > This is pretty much how the EJB 2.0 specification defines > relationships between entity beans as well. So moving to > the 2.0 specification (if and when necessary) will be a relatively > painless process. > > For resources on this topic, you can check out our online > documentation at: > >http://www.borland.com/techpubs/books/appserver/appserver45/ejb-programmers/entity-beans.html#999808 > (in the section titled "Object relational mapping concepts" > > -krish > > > -----Original Message----- > > From: A mailing list for Enterprise JavaBeans development > > [mailto:[EMAIL PROTECTED]]On Behalf Of Jozsa Kristof > > Sent: Tuesday, November 27, 2001 4:24 PM > > To: [EMAIL PROTECTED] > > Subject: CMP entity bean relationships in EJB 1.1 > > > > > > Ok, the subject tells most of it.. My question is, what kind of > > relationships can I build between my entity beans using an application > > server which supports EJB 1.1 but not EJB 2.0? > > > > I've seen a demonstration ('EJB Design Strategies and Performance > > Optimizations' in pdf) by Mr. Ed Roman, where he talks about a 'graph of > > related entity beans', eg. 'An Order has a Customer, which has an > > Address..'. Is such kind of relationships implementable using EJB 1.1, or > > they exists only in EJB 2.0? Can anyone show me any design pattern, basic > > example, tutorial, or any resource on that very topic? > > > > Regards, > > Christopher Jozsa > > > > -- > > .Digital.Yearning.for.Networked.Assassination.and.Xenocide > > > > =========================================================================== > > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > > of the message "signoff EJB-INTEREST". For general help, send email to > > [EMAIL PROTECTED] and include in the body of the message "help". > > > > > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff EJB-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". > -- .Digital.Yearning.for.Networked.Assassination.and.Xenocide =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
