On Jun 3, 2010, at 4:26 PM, Pinaki Poddar [via OpenJPA] wrote:
>   The provision to allow function() expression in Criteria API was to 
> accommodate database functions. Not sure why you qualified its location as "a 
> rather unexpected place". 

To quote from "Pro JPA 2: Mastering the Java Persistence API", p. 264:

> Unlike native SQL queries, which are clearly marked, function expressions are 
> a small part of what otherwise looks like a normal portable JPA query that is 
> actually tied to database-specific behavior.

I am not the only one to find this "a rather unexpected place".  Unlike 
createNativeQuery which is easily identified by grep, searches for 'function' 
require a bit more care and are likely to be missed.

-=- Jerry
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