It's a one month old news (rather old compared to the blogosphere's usual speed), but I stumbled across this today:
bytecode transformations using XSLT!
Wow, this is something I dreamed about when writing J-Fit two years ago. J-Fit is our in-house pipeline-based bytecode transformation tool that is used to shrink Cocoon to its bare minimum and adapt its bytecode so that it runs on J2ME virtual machines (see
my presentation at the 2002 Cocoon Get Together for more on this).
I wonder however how fast this is (the XML document for a class is quite huge) and if it's actually usable to process several hundred classes as part of a build script.