Not sure what you mean by the "command model". Other component models I know of are COM, CORBA Component model - what is the command component model?
>From: Justin Couch <[EMAIL PROTECTED]> >Reply-To: Justin Couch <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: WHY EJB >Date: Thu, 18 Oct 2001 23:44:01 +1000 > >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". > _________________________________________________________________ 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".
