[jboss-as7-dev] Serialization, proxies issue & AS7-5496

[Scott Marlow]

On 09/26/2012 08:11 PM, Scott Marlow wrote:
> On 09/26/2012 07:07 PM, Stuart Douglas wrote:
>> This seems odd, de.seimet.photo.entity.Location_$$_javassist_2 should
>> write itself out as a SerializableProxy as well AFAIK.

Thinking more about what you said, I need to debug some more...

>
> We get the CNFE on the generated
> de.seimet.photo.entity.Location_$$_javassist_2 class not being found on
> the server side (of the ejb invocation).  This happens before we reach
> the code that would of invoked the readResolve method.
>
>>
>> Stuart
>>
>> Scott Marlow wrote:
>>> I was able to reproduce the CNFE issue reported in AS7-5496 (using MySQL
>>> + the test case attached to the jira).
>>>
>>> The jira reports that the CNFE problem only occurs with Hibernate (using
>>> EclipseLink is a workaround).  I suspect that EclipseLink might not be
>>> using a proxy for the lazy association but not really sure.  According
>>> to the jira, this also used to work with AS5 (older Hibernate).
>>>
>>> During the first EJB client invocation, an entity is returned that
>>> contains a (lazy assocation) proxy that seems to be handled by a call to
>>> readResolve().  During the readResolve(), the original
>>> org.hibernate.proxy.pojo.javassist.SerializableProxy instance is
>>> replaced with a newly generated class
>>> de.seimet.photo.entity.Location_$$_javassist_2 instance.
>>>
>>> However, when the returned entity is passed to the other EJB client
>>> invocation (as a parameter), the generated class
>>> de.seimet.photo.entity.Location_$$_javassist_2, will not be known on the
>>> server side (causing the cnfe.)
>>>
>>> More details are in the jira.
>>>
>>> I'll try using the older version of Hibernate and see if that helps.
>>>
>>> Any other suggestions?
>>>
>>> Scott
>>> _______________________________________________
>>> jboss-as7-dev mailing list
>>> jboss-as7-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/jboss-as7-dev
>
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