Is there a way to map a "map" or hash object? This would be the tool I reached for out of my Hibernate back of tricks, and due to the overloading of the word "map" I had very little success with my search. At this point, I would be using this map only in plugins, and hardcoding is an option, but I''d like to know about the general case. The specifics are that I''d want to be able to ask my domain object for a mapping of a range of non-contiguous integers (zip-codes) onto a much smaller set (needed input to a third-party search "id" field). Cheers, Jim