Nordås on domain-driven design

I must say, very nice introduction on Andres Nordås' talk on Doing Domain driven design better at JavaZone. He has really raised the bar with respect to getting someones attention to start with. Unfortunately It was no space left in Lab III for me and my co-worker. But now we are chilling out in the Overflow area, with really good audio and video so this is really great. Star Wars, get outa heeee....good work Anders.

Being able to provide infinite flexibility in the borderline between your domain and your infrastructure and to be more specific, repositories. When you want infinite flexibility, you also need to be sure that your coupling is loose so that you may adjust implementation strategies without afecting your domain, e.g what an order looks like or what it means to place an order.  
Being able to refer to a repository in form of a generic repository interface is a very nice thing. It is even better that use you generically typed interface without knowing if it is an in-memory repository, or a Hibernate reposiory. Dealing with persistent lifecycle is in concept trivial, you store/delete and retrieve objects by query or by id. This is how all interaction with repositories should be stated.

Anders presens several examples that shows how easy it is to achieve loose coupling using generic types a container and pluggable strategies. You should really take a look to see how our code may be improved. Eirik Maus and myself will touch briefly into the same topics in our talk on Dealing with one to too many relations in Hibernate. I beleive that if you are able to correctly model your repositories as Anders does, all the other bits and pieces will fall into place.