A standard persistence layer for Java

It wasn’t long ago that I wrote about the persistent problems of the persistence layer. I was referring to the clash between JDO and EJB, or more specifically JDO 2.0 (JSR 243) and EJB 3.0 (JSR 220), which divided the Java community. The leads of those specification requests, Linda DeMichiel and Craig Russell, wrote an open letter calling for a unified persistence layer and a common POJO (Plain Old Java Objects) model for J2SE and J2EE.

Beyond EJB and JDO, we already have plenty of fine technologies, such as Hibernate,
 that could form the basis for a unified model. From what I can tell, the reaction has been fairly positive. See the related articles.

Related articles

• TheServerSide.COM Sun creates new Persistence API: EJB & JDO join forces
• Java Developer’ Journal Sun Proposes Single Data Persistence Model for Java
• Java.net News Open Letter Asks Support for New Persistance Spec.