The Vietnam of Computer Science

Ted Neward has written a great post on one of my favorite subjects: the object relational problem. He calls it 'The Vietnam of Computer Science'. I've thought for a long time that the OR mapping problem is currently the main challenge in developing business applications. I've faced these issues head on when I developed my own data-access-layer code-generator. Funnily enough, although it's such a huge issue in application design, there aren't any really good books on the subject (that I know of). Martin Fowler, Eric Evans and Rocky Lhotka all touch on the issues in their books on enterprise application development, but I've never seen it exhaustively covered anywhere. Ted's post is an excellent summary of the main compromises you have to make, but I'd really like someone to write the definitive book on the subject.