http://www.hibernate.org/hib_docs/reference/en/html/performance.html#performance-proxies

Basically, if you *lazily* retrieve an instance of a subclass, by specifying 
the superclass type in the getReference() method, or navigation of an 
association of the superclass type, you will not be able to downcast.

So simply re-retrieve the same instance using find(), and you will have an 
instance of the subclass.

View the original post : 
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3922664#3922664

Reply to the post : 
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3922664


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