WebObjects/EOF/Using EOF/Custom EOAdaptor

It's surprisingly easy to create a simple custom EOAdaptor. In 2002, there was a post to the Omni WebObjects mailing list with the code necessary to do implement a File System EOAdaptor (obviously the WO version is a little old, but it should be a good starting point):

http://www.wodeveloper.com/omniLists/eof/2002/June/msg00053.html