So which component model will satisfy these prerequisites? Also, in Appendix A, support for component-level inheritance is cited as an item for future releases.
>From: Justin Couch <[EMAIL PROTECTED]> >To: John Harby <[EMAIL PROTECTED]> >CC: [EMAIL PROTECTED] >Subject: Re: WHY EJB >Date: Thu, 18 Oct 2001 23:26:50 +1000 > >John Harby wrote: > > > > But EJBs are components. If you look at the OO theory involving > > modeling like UML and processes such as RUP, EJBs fit into their > > notion of components nicely. > >Components are only one part of "OO" (note that Object Oriented as >itself does not exist. We must have OOA or OOD to be actually >meaningful). RUP can be applied to non-OO design and analysis, just like >UML can be. Another part of OOD is about building heirarchical models, >which EJBs do not allow without a great deal of effort. For example, as >a rough guess, about 50% of the design patterns could not be used in an >EJB environment - in particular some of the core patterns of Observer >and Command are impossible to implement. Both these patterns are core to >the J2SE design. > >-- >Justin Couch http://www.vlc.com.au/~justin/ >Freelance Java Consultant http://www.yumetech.com/ >Author, Java 3D FAQ Maintainer http://www.j3d.org/ >------------------------------------------------------------------- >"Humanism is dead. Animals think, feel; so do machines now. >Neither man nor woman is the measure of all things. Every organism >processes data according to its domain, its environment; you, with >all your brains, would be useless in a mouse's universe..." > - Greg Bear, Slant >------------------------------------------------------------------- _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp =========================================================================== 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".
