EJB QL select method
Hi,
Can somebody please explain how the SELECT method is supposed to work. I've been searching the net for about an hour and can't find a good example.
I have this method in the deployment descriptor to count the number of objects in the database:
<query>
<query-method>
<method-name>ejbSelectTripCount</method-name>
<method-params/>
</query-method>
<ejb-ql>
SELECT COUNT(t)
FROM Trip AS t
</ejb-ql>
</query>
But as I understand it this method cannot go in the Remote Interface and has to go in the bean implementation:
publicabstractclass TripBeanimplements javax.ejb.EntityBean{
...
publicabstractint ejbSelectTripCount()throws FinderException;
...}
How do I call this method without first finding a bean reference (there may not be any), and why is it implemented this way?
thanks in advance for your help,
Stu.
[1320 byte] By [
_DuRdEn_a] at [2007-10-3 4:53:05]
> Hi,
> Can somebody please explain how the SELECT method
> is supposed to work. I've been searching the net
> for about an hour and can't find a good example.
>
> I have this method in the deployment descriptor to
> count the number of objects in the database:
>
> <query>
> <query-method>
> <method-name>ejbSelectTripCount</method-name>
> <method-params/>
> </query-method>
>
> <ejb-ql>
> SELECT COUNT(t)
> FROM Trip AS t
> </ejb-ql>
> </query>
>
>
> But as I understand it this method cannot go in the
> Remote Interface and has to go in the bean
> implementation:
>
> public abstract class TripBean implements
> javax.ejb.EntityBean{
> ...
> public abstract int ejbSelectTripCount() throws
> FinderException;
> ...}
>
> How do I call this method without first finding a
> bean reference (there may not be any), and why is it
> implemented this way?
>
> thanks in advance for your help,
>
> Stu.
You cant do it, buy implementing a home method and exposing it in the home interface.
public int ejbHomeGetTripCount()
Fil
