From: Bill Shannon <bill.shannon_at_sun.com>
Date: Sun, 09 Jul 2006 16:08:47 -0700

By "implement" do you mean "use in my application" or "build my own
version that corresponds to the Java Persistence spec"? I assume
the former.

Of course, Java Persistence is included in GlassFish, but if you want
to use it separately from GlassFish, you can find it here:

https://glassfish.dev.java.net/downloads/persistence/JavaPersistence.html

You might find this page helpful as well:

https://glassfish.dev.java.net/javaee5/persistence/entity-persistence-support.html