Download: Hibernate 3.0 Java Persistence
Hibernate 3.0, the latest persistence technology for Java, is available as an Open Source download. Get a rundown on the latest capabilities for data mapping between object, relational and even XML data resources, and a look into the future of EJB 3.0 architectures.
The Hibernate 3.0 core is 68,549 lines of Java code together with 27,948 lines of unit tests, all freely available under the LGPL, and has been in development for well over a year.
Hibernate 3.0, a project run out of JBoss, the Open Source J2EE app server, is built to support a variety of data mapping technologies to make it easier for Java apps to interact with persistent data. It supports mapping for Object/Relational (O/R) assets, as well as XML, allows "a single definition of the transformation between various in-memory representations of the entity data and the relational schema," according to its project team. This functionality exists even with very complex legacy schemas and schemas for historical data or data with visibility rules.
Hibernate 3.0 also provides comprehensive object/relational query functionality, with three full-featured query facilities: Hibernate Query Language, the newly enhanced Hibernate Criteria Query API, and enhanced support for queries expressed in the native SQL dialect of the database. Among Hibernate 3.0's are:
A full list of Hibernate 3.0 features is available: