ObJectRelationalBridge (OJB) is an Object/Relational mapping tool that provides transparent transactional persistence for Java Objects against relational databases. It supports multiple persistence APIs, including JDO, ODMG, and several custom alternatives. It is released under the Apache 2.0 license.
The latest release, Apache OJB (Object/Relational Bridge) 1.0.1, brings with it, the following changes:
1. Adds a new service that makes the creation of Identity objects to lookup objects by primary key much easier
2. Adds a new cachingKeyType attribute in ObjectCacheDefaultImpl
3. Includes a change in build dependency
Visit Home Page: http://db.apache.org/ojb/
Download Apache OJB 1.0.1: http://db.apache.org/builds/ojb/1.0.1/
4. Performance improvements over the old version that mapped all values from the result set to the internal Map class.