[Opensource] JDO resources

[Marc Schipperheyn]

Mike,

Some resources on JDO:
http://jdocentral.com

Open source implementations:
http://jakarta.apache.org/ojb (partial implementation right now)
http://www.tjdo.org (full implementation)

I haven't tried any yet.

There are also some commercial implementations you can check out on
jdocentral.com

For my part, it looks very promising. My major gripe right now is that you
need a bytecode enhancer to make your beans JDO compatible. Apparently this
was done to make live easier for programmers and not to convolute code but
it 'feels' funny. Also, there is a heated debate between an EJB evangelist
and the JDO evangelist on whether there should be a new standard at all. The
basic idea of JDO is to have the programmer not program SQL but program
against an object API. The expectation is that it may evolve to a layer on
top of JDBC. I also saw some integration with JCache on some implementations
to address performance issues.

It is early days still, but you can check out some thoughts on JDO 2.0 on
the community forums on jdocentral.

Kind regards,

Marc Schipperheyn
<theFactor.e>
Alliance Partner for Macromedia

The future is technological, but it will not be a world of gray steel