Speedo 1.0 is available and can be downloaded at:
http://forge.objectweb.org/project/showfiles.php?group_id=33

Speedo is an open-source implementation of the JDO specification. It uses the JORM, Medor and Perseus frameworks defined in ObjectWeb.

The changes since the last release (1.0BETA4), are the following:
- Speedo Eclipse plugin available
- bug fix about empty optimistic transaction
- bug fix about PersistenceManager.refresh(...)
- bug fix about optimistic concurrency
- take in account new jorm configuration
- use Medor expression for inheritance filter
- delete out of transaction is no more allowed according to the JDO
specification.
- JDO TCK in progress
- inheritance implementation in progress (JORM ready but not Medor)

Speedo Home Page

I was just wondering if anybody has given this a try yet? Maybe they could post there experience with it. Is it very usable?

Michael

http://tjdo.sourceforge.net/

http://db.apache.org/ojb/

http://xorm.sourceforge.net/

http://www.jpox.org/

http://speedo.objectweb.org/

http://www.eclipsejdo.org/

I've tried TJDO, Speedo, and looked over OJB but I've had the most success using JPOX. TJDO didn't seem to have as much documentation as I would have liked and Speedo and OJB seem to have a JDO interface placed on top of a prior implmented persistence mechanism which made configuration and debugging more difficult in my opinion. I have not looked at the new Speedo release though. Right now my vote for best open source JDO implementation would have to go to JPOX.

Paul

Thanks for the great reply. I had tried TJDO in the Fall, and didn't care for it too much. I also wasn't wild about OJB's plugin architecture. I was unware of JPOX, and will look into that.

Michael

I've tried TJDO, Speedo, and looked over OJB but I've had the most success using JPOX. TJDO didn't seem to have as much documentation as I would have liked and Speedo and OJB seem to have a JDO interface placed on top of a prior implmented persistence mechanism which made configuration and debugging more difficult in my opinion.

I've used TJDO 2.1 (open source) with MySQL's MaxDB database.

The basic documentation was OK. However, I wish that TJDO provided more
example code.

Congratulations to the Speedo team on their achievement.