[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: XML Object Serialization
** Reply to message from Jeff Lowery <jlowery@s...> on Tue, 29 Oct 2002 10:25:39 -0800 > > Sure, and I've seen enormous problems come out of people > > "compiling" XML schemas into classes using the tools that are now available. > > I mean, one of the main reasons for using XML is to decouple applications, and > > then people compile the XML schemas into code so that they tightly couple their > > applications to this week's version of the XML. > How about instead of generating classes, these code generators generated > interfaces + implementations? Still not perfect, but at least you're coding > your app to an interface. You can then change the interface, either through > extension or dynamic proxies. The implementation classes can also be > extended, or rewritten altogether if needs be. No, no help at all. It's not a problem that you solve by trying to use another Java feature. The problem is if the auto-generated XML->Java code is called from all throughout the application codebase. If the XML changes, everything breaks. You need to hide the auto-generated code behind a facade so that almost all of the application code is unable to call it directly. Then, when there are changes to the XML, the effect on the codebase is limited to a small, pre-determined set of classes. Cheers, Tony. ==== Anthony B. Coates, Information & Software Architect mailto:abcoates@T... MDDL Editor (Market Data Definition Language) http://www.mddl.org/
|
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|