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Posted to users@openjpa.apache.org by chintan4181 <ch...@gmail.com> on 2011/09/26 17:22:50 UTC

Enhanced JPA Entity

hi, I am getting below exception

org.apache.openjpa.util.MetaDataException: No metadata was found for type
"class com.company.domain.TestApplicatonVO". The class is not enhanced.;

I can remove this exception by turning on Enity enahancement but I have
below doubts 

1) I am running on WAS 7 server and if i turn on entity enhancer using
javaagent, does that create any performance issue?
2) Which type of enhacer is preferable in production environment, runtime or
buildtime?

Please suggest.

Thanks
Unmarshall


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Re: Enhanced JPA Entity

Posted by chintan4181 <ch...@gmail.com>.

Thanks Rick

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Re: Enhanced JPA Entity

Posted by Rick Curtis <cu...@gmail.com>.

> 1) I am running on WAS 7 server
If you have the JPA Feature Pack installed, you won't need to specify a
javaagent. Enhancement is handled by the container / JPA runtime.

> and if i turn on entity enhancer using javaagent, does that create any
performance issue?
You will pay a small cost for the enhancement when Entity classes are loaded
by the JVM. Once the classes are enhanced, the performance will be identical
as build time enhancement.

> 2) Which type of enhacer is preferable in production environment, runtime
or buildtime
Buildtime. This takes one variable away from the app server.

Thanks,
Rick

On Mon, Sep 26, 2011 at 10:22 AM, chintan4181 <ch...@gmail.com> wrote:

> hi, I am getting below exception
>
> org.apache.openjpa.util.MetaDataException: No metadata was found for type
> "class com.company.domain.TestApplicatonVO". The class is not enhanced.;
>
> I can remove this exception by turning on Enity enahancement but I have
> below doubts
>
> 1) I am running on WAS 7 server and if i turn on entity enhancer using
> javaagent, does that create any performance issue?
> 2) Which type of enhacer is preferable in production environment, runtime
> or
> buildtime?
>
> Please suggest.
>
> Thanks
> Unmarshall
>



-- 
*Rick Curtis*