No kidding. I would love for my company to have a process for deployment that's as smooth as the one you're describing.

We are consultants here in Bangalore and we have routinely done this on a Python/Django social networking web app and a Ruby on Rails web app. code-test-svn commit - svn export , pretty much. With a lot of java experience, I can say that it is more elaborate and laborious in Java than python or ruby. The erlang movie (http://video.google.com/videoplay?docid=-5830318882717959520) shows off the same, for erlang.

It's also true that I assume these things are just like that partly because I founded a company that handles build and deployment... http://www.electric-cloud.com