So, TinkerPop is kind of set of libraries over Blueprints, a standardized API to access graph databases.
Of which Frames is something allowing wrapping the contents of the graph into Java objects.
Which is great, but in the current version, TinkerPop 2.5.0, the functionality is quite basic.
For example, you can't query for all objects of some class. You would expect this to be done, as it's not that hard to implement.
Thanks to Jesse Sightler who is working on this Frames "extension" in the Windup project.