> Returning to the EJB/COM+ debate, a theoretical advantage of > EJB over COM+ > is that EJB provides a framework (Entity Beans) for doing > Object-from-data > whereas COM+ does not. But this advantage will remain > theoretical until > efficient Object-from-data systems emerge. Use of static SQL, I believe Apple's Enterprise Object Framework in WebObjects has been doing this very efficiently for the last few years - and they allow you to override the dynamic-SQL mechanism with static SQL where necessary. They also provide fine-grained control for determining which objects are "fetched" in an object graph when one of their related objects is fetched. On the EJB side, I'm pretty sure Persistence PowerTier for EJB has implemented an efficient SQL to object-cache mapping... Has anyone looked at BEA's WebLogic Enterprise (formerly M3) product? They were really beating the "billions-of-data-objects" drum a few years back. This is only to conclude, however, that there aren't *very many* high-quality object-relational mapping systems out there. It's also very debatable whether such a system will *ever* be as high-performance as a tuned CICS or Tuxedo system is today. Stu Charlton Distributed Systems Architect, Nuvation Labs [EMAIL PROTECTED] =========================================================================== 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".
