I am working on the features to be included on the IDE. Checking sourceforge.net, I found several interesting open source packages. The closest to what I envision for the code generator is middlegen(http://boss.bekk.no/boss/middlegen/).
Now, for the notes feature itself, I came across http://www.to-java.com/ which I found on the oracle otn section (migrating Lotus notes apps to J2EE, http://www.oracle.com/technology/oramag/webcolumns/2003/techarticles/lin_tojava.html). That’s exactly what I think is the closest to a Forms, views paradigm for an Oracle-notes application.
As far as the IDE is concerned, it is going to be a Java Swing based interface. For the time-being, I am checking Sun Netbeans (http://www.netbeans.org/) and Oracle Jdeveloper.
At any rate, I don’t want to get too deep in extra features at this point. The basic point is to get an MVC application with the capability to display Views and Forms.