On 8 July 2014 20:53, Gail Badner <gbad...@redhat.com> wrote:
> HHH-8310 [1] mentions a Spring bug SPR-11125 [2] that results in threads 
> having a different ContextClassLoader (CCL) than their caller. As a result, 
> SerializableBlobProxy.generateProxy() throws IllegalArgumentException because 
> WrappedBlob is not found. The same happens for 
> SerializableClobProxy.generateProxy() because WrappedClob is not found.
>
> IIUC, this will be fixed by accessing the ClassLoaderService in Hibernate 5.
>
> I'm looking for either a fix or workaround for this in Hibernate 4.2.x and 
> 4.3.x.
>
> A) A possible fix for HHH-8310 suggests using the ClassLoader returned by 
> WrappedBlob.class.getClassLoader(). Could this somehow get an unintended 
> ClassLoader?

I'd use this approach, you could only get an unintended ClassLoader if
there are duplicates exposed on the same classpath, but in such a case
nothing would work correctly anyway.

Sanne

>
> B) A workaround is for the caller to initialize 
> ClassLoaderHelper.overridenClassLoader before calling Spring.
>
> Which would be more appropriate?
>
> Thanks,
> Gail
>
> [1] https://hibernate.atlassian.net/browse/HHH-8310
> [2] https://jira.spring.io/browse/SPR-11125
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