I don't have any performance numbers just yet. From the design knowledge, my educated guess is that the translation phase will be somewhat slower, as EJBQL goes through a longer chain of syntax transformation, but the result retrieval should be as fast. Since the translation phase has never been a bottleneck in the query execution cycle, there is hopefully no noticeable overall performance hit.

Andrus


On Nov 13, 2007, at 5:50 AM, David Marko wrote:
Are there any performance differences(penalty) when using EJBQLQuery instead of
e.g. SelectQuery?

Also for the others, I use succesfully
http://openjpa.apache.org/builds/1.0.1/apache-openjpa-1.0.1/docs/ manual/jpa_langref.html
as a very nice EJBQLQuery syntax manual.

David


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