[jboss-user] [JBoss Seam] - Re: Seam and the old school of thinking

[gavin.king@jboss.com]

You can use the register(user) approach if you like. Seam 1.1 lets you write "#{register.register(user)}" as a method binding expression. (Plain JSF does not.) It all depends upon whether you view the user as "contextual state" or just a transient argument to a method. In this case its just a matter of taste.

If you have a need to expose the functionality as a web service, then by all means layer your application to separate "business logic" from "interaction logic". But most applications do not start out with this requirement, it is something that comes later. People think just because maybe they will need the layering at some unspecified future date, that they had better introduce it *now*. But of course, this is a classic case of YAGNI. The easiest thing on earth (assuming modern refactoring tools) is to introduce extra layering into an existing application. The idea that this was difficult originated prior to the existence of "extract method".

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