Hi Kevin.
I'm glad to see OrderColumn may work for you. There's a small bug in
the code above that is causing the optimistic lock exception.
PageOfBook p3 = new PageOfBook();
p3.setData("This is a page 3 in a book");
PageOfBook p4 = new PageOfBook();
p3.setData("This is a page 4 in a book");
Notice that the second setData is on p3 instead of p4. After I
changed it to p4, the test ran OK. I'm not sure why this is resulting
in an optimistic lock exception since that seems a bit misleading. It
looks to be directly related to having null data in your lob data
field though. I'll take a closer look and possibly open a JIRA.
-Jeremy
