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The
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The model classes are business classes. These classes are not specific to any front end or back end, but model the business itself. So when you design them, they should not be designed around what a page requires (e.g. one object that contains a bunch of stuff for the whole page) or what the back end returns (e.g. direct map to proxies). They should be designed around the business model itself.
The controller classes
The controller classes are actions and forms. It's the action's job to take biz objects from the service and convert them (if necessary) for display on the screen, and take data from the jsp and convert it to biz objects to send to the service. An action should do only one thing, i.e. we aren't doing actions the "multiple method" way.
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