Here are the slides to a short presentation I gave on persistence at OSGi DevCon Europe in Zurich. I had 30 minutes and wanted to do a demo to show that EclipseLink is running nicely in OSGi--it was tough cramming all this in but I did it without a moment to spare. Enjoy the slides and if they spark some questions you can post them here on the blog or on the EclipseLink newsgroup at http://www.eclipse.org/newsportal/thread.php?group=eclipse.rt.eclipselink or the eclipselink-users mailing list.
--Shaun