Re: ClassCastException while use jpa annotation in resin-pro-3.0.19

On May 24, 2006, at 9:30 AM, zhu wrote:

>
> the app was works in 3.0.18, but failed in 3.0.19,
> because of the javax.persistence package in {resin-home}/lib/ejb30.jar

3.0.19 changed javax.ejb to javax.persistence.  So you would need to  
make some changes.

>
> i get a ClassCastException while obtain EntityManagerFactory from
> javax.persistence.Persistence.createEntityManagerFactory(...), it was
>  because difference ClassLoader cause that exception
>
> what's the sequence of Class Resolve in a webapp, i think it should be
> jdk-rt -> WEB-INF/classes -> WEB-INF/lib -> ResinServerLibs

{jdk, $RESIN_HOME/lib} -> {WEB-INF/classes, WEB-INF/lib}

In other words, the global classpath has priority, and only if the  
class is missing will Resin look in WEB-INF.


> uppon the ClassCastException, i think resin-pro's sequence was
> jdk-rt -> WEB-INF/classes -> ResinServerLibs -> WEB-INF/lib
>
> how can i resolve this problem, or report a bug?

bugs reports are at bugs.caucho.com.  It would help if you can  
provide a larger section of the failing code, too.

-- Scott

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