Yes, good point Matt. I suppose the only problem with looking up is you will have to test within the container (the essential problem with testing old-school EJBs). You could always use SeamTest for testing these calls within your DM, but TDD purists would probably argue with that. I certainly see alessandrolt's concern. There are some interesting discussions about this on the Spring forums and here: http://debasishg.blogspot.com/2007/02/domain-driven-design-inject.html I would be curious if there are there any plans for support of this approach within Seam? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089434#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...