I've been working on the Java ORM for Jackrabbit.
There were a few missing bits, such a way to store a collection of
primitives. The existing approach had a node and child nodes for each
element originally. I added the ability to have a collection within one
node, with properties exposed as a map.
So I can now have an object with Map<String, String> and it will be
stored as a single node with many properties.
However, I have not yet contributed this back, and am not really sure
about how to get involved, or who to send contributions to.
