No, unless DU is always top deployment. And even then it could come from two diff "deploy/" dirs. e.g. deploy1/foobar.ear deploy2/foobar.ear or for non top level deploy/foo.ear/my.jar deploy/bar.ear/my.jar It will be unique, as it usually equals to URI.toString. But this is human-unreadable. Perhaps we could grab all simple names until parent is null, and make sub-contexts out of them. Unfortunately, to make this unique, we would have to grab "deploy/" dir as well, which is impl/config detail --> not user friendly.