Currently (to the best of my knowledge), cayenne always represents a to-many relationship as a java.util.List. However, I was thinking it would be nifty if cayenne supported map-representations of to-many relationships. For instance, you could model a relationship between Users and UserPreferences as a map, and specify the "name" property of the UserPreferences table as the map key. Does that make sense? Am I the only one who thinks that would be incredibly useful? :) Is something like this already planned for 3.0? If other people would find it useful, then I'd be happy to submit a feature request and also work up a patch.
Robert
