You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cayenne.apache.org by David Marko <dm...@tiscali.cz> on 2007/11/13 11:50:24 UTC
Cayenne 3.0M2 and EJBQLQuery
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
Re: Cayenne 3.0M2 and EJBQLQuery
Posted by Kevin Menard <km...@servprise.com>.
Sounds reasonable to me. In the interim, we could probably link directly to
them with an appropriate note.
--
Kevin
On 11/13/07 9:09 AM, "Andrus Adamchik" <an...@objectstyle.org> wrote:
> Begin forwarded message:
>
>> 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.
>
> In the spirit of sharing between Apache projects, we may use it as a
> basis for our own docs. Borrowing the EJBQL JavaCC syntax helped us a
> lot already.
>
> Andrus
>
Fwd: Cayenne 3.0M2 and EJBQLQuery
Posted by Andrus Adamchik <an...@objectstyle.org>.
Begin forwarded message:
> 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.
In the spirit of sharing between Apache projects, we may use it as a
basis for our own docs. Borrowing the EJBQL JavaCC syntax helped us a
lot already.
Andrus
Re: Cayenne 3.0M2 and EJBQLQuery
Posted by Andrus Adamchik <an...@objectstyle.org>.
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
>