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From Michael Dick <>
Subject Re: problem using subclass object as query parameter
Date Fri, 10 Sep 2010 16:55:54 GMT

Sorry it took a little while to get back to this thread.

Is there a reason why you want to expose the discriminator column as a
persistent property (you have the column TYPE mapped as an enum & as the
discriminator col). I think this is causing the problems you're seeing.

I haven't checked the spec to see if this is expressly forbidden, but I'd
definitely say it's unusual.

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