How to understand What JPA version I'm using in EJB? Is JPA built-in EJB?
Regards
+2
A:
With a Java EE 5 container, you get JPA 1.0 (specified in the JSR 220 - Enterprise JavaBeans, Version 3.0).
With a Java EE 6 container, you get JPA 2.0 (specified in the JSR 317: Java Persistence 2.0 which is now dedicated).
And if you are providing your own JPA implementation, well, it depends on the implementation and the version you provide :)
Here are some JPA 2.0 implementations and their respective versions:
- EclipseLink 2.0+
- Hibernate EntityManager 3.5+
- OpenJPA 2.0+
- DataNucleus 2.1.0+
Pascal Thivent
2010-08-19 10:05:33
How can I find this standalone specification in JEE6?
Navid
2010-08-19 10:10:40
@Navid I'm not sure this is what you're looking for but I added some links to the specs.
Pascal Thivent
2010-08-19 10:19:01
Are Persistence Providers implementing JPA? if yes, so I can not use just JPA because it is just API, isn't it? and I have to use one of JPA 2.0 implementations ?
Navid
2010-08-19 10:20:47
@Navid: Yes, persistence providers are providing JPA implementations. And yes, JPA is indeed just an API (like the whole Java EE platform) and you have to use an implementation.
Pascal Thivent
2010-08-19 10:31:39
Tahnks for you answer, but would you please tell me the version of JDK in difference with JEE? or there is a relation between them?
Navid
2010-08-19 10:37:22
@Navid: Sure, see [Correlation between JEE / J2EE to J2SE / JDK versions](http://stackoverflow.com/questions/2013958/correlation-between-jee-j2ee-to-j2se-jdk-versions/2015780#2015780).
Pascal Thivent
2010-08-19 10:39:44