I found the AppFuse Generator project in my comments last night. Richard So seems to have created a nice code-generation tool for AppFuse. It looks like it can create/modify all the files you need to CRUD a database table. I took a brief look at the code and it's all based on Velocity templates, so you should be able to easily tweak things.
This tool does seem to generate the DAOs/Managers - which can lead to more code to maintain. It would be nice if it could be modified to be similar to AppGen where there's a "detailed" version (that generates everything) and a "default" version (which only generates the web tier classes). The default version could use the generic "dao" and "manager" beans. I wonder if this tool supports running/installing the same table more than once? This currently doesn't work too well with AppGen, but shouldn't be too hard to fix.
In reality, I'm pumped that Richard has created this, as well as a project to back it up. I especially like that he's going to try and create an Eclipse Plug-in as part of this project. Nice work Richard!