Can't you implement Observer via JMS and Message-Driven Beans? c
--- Justin Couch <[EMAIL PROTECTED]> wrote: > Date: Thu, 18 Oct 2001 23:44:01 +1000 > Reply-to: Justin Couch <[EMAIL PROTECTED]> > From: Justin Couch <[EMAIL PROTECTED]> > Organization: The Virtual Light Company > Subject: Re: [EJB-INT] WHY EJB > To: [EMAIL PROTECTED] > > John Harby wrote: > > > > So which component model will satisfy these > prerequisites? > > The command model would be satisfied by proper > inheritence. > Unfortunately I can't see observer being ever > implementable with EJBs - > basically because you can't register a bunch of listener > type objects > with a bean and have the bean call back to those > listeners. That > violates the basic principles of what a bean does and how > it functions > (ie potentially multiple copies of the one bean instance > representing > the one item of data, if we are talking about entity > beans). > > > in Appendix A, support for component-level inheritance > is cited as > > an item for future releases. > > Yup, but we are talking about today, rather than tomorrow > :) Given the > current revision speed, that would be 2-3 years as a > minimum before we > coiuld see that sort of functionality. > > -- > 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 > ------------------------------------------------------------------- > > =========================================================================== > 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". > __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com =========================================================================== 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".
