MessageDrivenBeans are bean components invoked by messages from other beans. This is a new type of bean in EJB 2.0. I don't have the EJB spec in handy and hence not able to more information. If you look back the application development environment a few years ago, the programmers were using proprietary transaction processing systems and messaging systems. Some of the advantage of using message-based applications is the optimum utilization of system resources and the ability to integrate an application over heterogeneous systems. For example if you were booking a journey across different airlines, it is perhaps not possible to confirm all legs of your journey by a single airline reservation system. Hence, one reservation system can request a reservation with another system by sending a "reservation request" message. The other system replies to original sender by another message. Hence, message-driven programming is asynchronous (perhaps there is also synchronous messaging I am not familiar with). The sender (client) does not wait until the call request is completed. The request call is completed at the server side and another "callback" message is sent to the client. Hope this helps. -- Subra Subramaniam S - Viveka Software Technologies Pvt. Ltd. http://www.thinktankpartners.com/ > -----Original Message----- > Date: Fri, 8 Dec 2000 10:43:37 +0100 > From: Christophe Demez <[EMAIL PROTECTED]> > Subject: Re: How to start one or several EJB when my server start ? > > Hi, thanks for your answer, but > > What is a MessageDrivenBeans ? > > Thanks again > > Christophe _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.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".
