I should write a ejbfinder(or select) method which just returns a persistence field in my entity bean ,
I should use EJB QL like
SELECT a.userid FROM AddressEJB AS a WHERE a.city=?1
not ( SELECT OBJECT(a)......)
right?
But How would my ejbfind method look like?
public String findUserIDByCity(String cityname) throws FinderException;
or public LocalAddress findU......?
I am confusing
According to the spec, the return type of a finder method is either the local (or remote) component interface of the entity bean or a Collection of it. So I think you should use a select method if you want just to return a persistence field. Something like :
public abstract String ejbSelectUserIDByCity(String cityname) throws FinderException;
You can then access this method inside a home business method :
public String ejbHomeUserIDByCity(String city) throws FinderException {
return ejbSelectUserIDByCity(city);
}
> I should use EJB QL like
> SELECT a.userid FROM AddressEJB AS a WHERE a.city=?1
> not ( SELECT OBJECT(a)......)
> right?
I my opinion, you should make litle attention when you write "a.userid", because "userid" shouldn't be a CMP field for the AdressEJB bean but for the UserEJB, instead. Use the container-managed relationship between the AdressEJB and UserEJB entity beans.
