isAssignable/Progression This logic needs moving into the TypeInfo abstraction, see the TODO I added to the code. isProgression is just a special form isAssignable. For now I've fixed the failing tests (that don't provide a classloader) by stealing it from the bean's class. Builder I've refactored the builder so the main entry point is part of the spi. I moved the implementation into its own package so it doesn't get confused as implementation of the metadata itself. I also removed the use of reflection and made the impl type safe. We have to use reflection sometimes because we don't know the types or "joinpoints" at compile time, but using reflection bypasses compiler checks which means you only find out it is broken at runtime, so we should avoid it where it is possible. Finally, the builder needs some tests. One of my "laws of programming" is "If it isn't tested, it doesn't work" :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4000445#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...