A video from Eric Evans presentation “Three Practical Steps Toward Domain-Driven Design” at JavaZone is available here. I’ve read the book and it did clear up some things for me, especially on bounded contexts.
A full list of available presentations and videos from the JUG in Norway can be found here.
Update: They removed the videos for this years JavaZone and put up as torrents here.
I linked to an article outlining a generic DAO design a little while back. It had some good points, but today as I was reading some mail from the Domain Driven Design group I started thinking again. One of the guys there suggested to view the Repository/DAO as a collection. You can’t just narrow it to that, but you could grab the base concepts. It would provide methods something like this:
You see some differences between “stateful” and “stateless” implementations of the DAO layer in the methods above, but they are minor and I actually think this should be a good pattern that most people can grasp easily.
Oracle has a BPEL cookbock here. The SOA guys at work will love it I guess. 😉