OpenJPA Enhancer

Question

Hi,
I'm working on Weblogic Workshop 10gR3. I've used OpenJPA as JPA provider.
I've generated Entity beans from database connection in DB Explorer.
I'm getting the following exception:
find all failed<openjpa-1.1.0-r422266:657916 fatal user error>
org.apache.openjpa.persistence.ArgumentException:
Errors encountered while resolving metadata. See nested exceptions for details.
In weblogic server log, no nested exception was found.
As per one blog ( [http://anydoby.com/jblog/article.htm?id=49|http://anydoby.com/jblog/article.htm?id=49] ), openjpa enhancer needs to be applied to the Entity Classes.
How can I run openjpa enhancer withing Workshop? Is it possible to do without build.xml update?
Suggestions are welcome.
Thanks,
Anagha

Answer 1

In Workshop for WebLogic 10.3, if you created your JPA project and selected Kodo as your JPA implemention, the IDE would take care of the enhancement for you during the build. We did not provide the same for OpenJPA though.
Have you considered another JPA implementation that does not require enhancement such as TopLink or EclipseLink? In Workshop, you would configure your project for JPA, use the Generic provider, and then add your EclipseLink/TopLink jars to the project. With the Generic provider selected, Workshop won't know which implementation specific properties to add to your persistence.xml so you would need to add those to your persistence file but otherwise everything else should work the same.
An even better option is to try Oracle Enterprise Pack for Eclipse (OEPE) which provides better functionality for JPA development than Workshop. OEPE is Oracle's strategic Eclipse IDE and provides a complete set of tools for EclipseLink and TopLink as well as Generic JPA providers. In addition to JPA, OEPE supports full JavaEE development and also includes tools for Web App Development, Spring, Database, Web Services, and (of course) WebLogic Server.