Re: [eclipselink-users] jpa_helper_invalid_queryclass $Proxy34

[Christopher Delahunt <christopher.delahunt@xxxxxxxxxx>]

I'm not sure where you are running this server wise, but you can always 
get the delegate EntityManager and have it create your query directly:
 Query query = em.getDelegate().createQuery(...);
 
JpaHelper.getDatabaseQuery(query).setRedirector(aggressiveCacheQueryRedirector);

em.getDelegate should give you the EclipseLink em and so not give you a 
proxy query object either. 

Best Regards,
Chris



On 28/05/2010 1:43 PM, Zarar Siddiqi wrote:
> I'm receiving the following error almost randomly, but once I receive
> it, all subsequent calls using the em fail:
>
> jpa_helper_invalid_queryclass $Proxy34 (There is no English
> translation for this message.)
>
> I use the following before each query:
> Query query = em.createQuery(...);
> JpaHelper.getDatabaseQuery(query).setRedirector(aggressiveCacheQueryRedirector);
>
> I looked at the code inside JpaHelper.getDatabaseQuery() which is
> where the exception is thrown and it reads:
>
>
>         if (query instanceof JpaQuery) {
>             return ((JpaQuery)query).getDatabaseQuery();
>         }
>
>         throw new
> IllegalArgumentException(ExceptionLocalization.buildMessage("jpa_helper_invalid_query"
> + query.getClass()));
>
>
>
> Any idea how to get around the proxy?
>
> Thanks,
> Zarar
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