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This is precisely what the Unisys managers told us during the MID project. It interested them precisely because we turned our backs on passing complex objects and passed only data objects. If you have to scale outwards, you have to reduce vertical complexity (depth). It comes down to why the mail sends you letters in envelopes (only handle the address information and size issues), why children are taught to read with phonetics, and composers are best taught harmony at a gross level over counterpoint first. This may be news to the web, but hardly anywhere else. OOP was meant to solve programmer problems: maintenance and reuse. Relational solves problems for the data owner: maintenance and reuse. Hypermedia solves a problem of creating relationships among data that has different owners but does not necessarily help maintenance and reuse. It's easy to design hypermedia systems that fail at that and harder to design ones that don't. Putting controls in the text is one part of the problem. Systems that point in are easier but only if the change control is absolute. At the end of it all, hybrids are the solution, so no, this is not the beginning of a new meta model for large scale architecture. Not at all. It's the same stuff with hypermedia being brought forward as mainstream rather than lunatic left wing fringe. len -----Original Message----- From: Mike Champion [mailto:mc@x...] Are we seeing the outlines of a new meta- model for large scale software architecture that challenges a lot of the received wisdom of the OO paradigm? That is, perhaps "encapsulation" of data is not such a good thing after all ... or at least it's not scaling well to the Web. Perhaps it makes more sense to expose the data via generic operations rather than exchange objects that encapsulate data behind customized operations. I'm not sure, but things are getting interesting ....
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