Hmm, It seems to me there is some process compiled into eclipse or a stand-alone process. There are also some inputs. In my case I would like to always run the process against all of the tables in a specified schema. And there are options like I do/donot want an interface generated, etc. So, it seems to me it should be possible to generate an ant task and bundle the task with myeclipse. I add a table or two to the db. Write some code to use the table data. Use ant to compile the code. Debug the code. And repeat. Just would be nice if ant could gen the jpa source as part of the compile process.