Heavyweight + Lightweight

Today seems a good day for many Java developer.
Via Rich Unger's Blog I found the problem with havyweight and lightweight components is solved in Java6u12 and also Java6u12 early access is availably too.
I must test it in the Balloon project, nice to merge WWJ with NetBeans platform.

Working with rollbacks in JPA

First examples you could see about JPA shows you how easy is to work with it. Don't misunderstand me, I like JPA, we (the developers) need a standard in the ORM world.
What I mean is when you really start working in a project using JPA discover you must understand fine the standard and the ORM engine implementing it (in my case TopLink).

Previously, in another post I put a couple of links on how to detach entities, here I would like to point to another post, from David Van Couvering's blog, talking about transaction rollbacks.