I'm trying to have a generic method for doing the same. All my entity
beans extend DomainEntityBean, use the same primary key class DomainPK, and
their remote interface extend DomainEJBObject.
So in DomainEntityBean, i have :
public static DomainEJBObject findByOid(Class homeInterfaceClass, int oid) throws
RemoteException{
DomainPK primaryKey=new DomainPK(oid);
try {
InitialContext initialContext=new InitialContext();
EJBHome
home=(homeInterfaceClass)PortableRemoteObject.narrow(initialContext.lookup(homeInterfaceClass.toString()),homeInterfaceClass);
return home.findByPrimaryKey(primaryKey);
} catch (NamingException e) {
throw new EJBException("Impossible d'obtenir l'interface locale AuteurHome");
} catch (FinderException e) {
throw new EJBException("Impossible de trouver un auteur avec l'oid "+oid);
}
}
But i got a compilation error : homeInterfaceClass is not a Class
So, is there a way to have a dynamic cast ?
Also, is there a problem using the same primary key class for every beans ?
Guillaume
Le ven, 07 avr 2000, vous avez �crit :
> For EJBs that need to be looked up a lot within the server code, I code in
> a static lookup() function in the implementation class. E.g. in
> ContributionLogEntryBean:
>
> /**Static convenience method for looking up ContributionLogEntry objects.*/
> public static ContributionLogEntry lookup(int iKey) throws RemoteException
> {
> try
> {
> Context ctx = new InitialContext();
> String sHomeName =
> EJBHelpers.getHomeInterfaceClassName(ContributionLogEntryHome.class);
> ContributionLogEntryHome home =
> (ContributionLogEntryHome)ctx.lookup(sHomeName);
> return home.findByPrimaryKey(new ContributionLogEntryPK(iKey));
> }
> catch (FinderException e) {throw new RemoteException(null,e);}
> catch (NamingException e) {throw new RemoteException(null,e);}
> }
>
> Then when the implementation of another bean needs to grab a
> ContributionLogEntry it can just do ContributionLogEntryBean.lookup(). Note
> that the use of a static helper here is perfectly valid - it's just
> equivalent to inserting this code in the calling function.
>
> Joe
>
>
> -----Original Message-----
> From: Joel Shellman [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, April 04, 2000 9:50 PM
> To: [EMAIL PROTECTED]
> Subject: Entity bean to Entity bean call
>
> In the ejbCreate method of my entity bean (MemberBean) it needs to:
> 1) lookup another entity bean (another MemberBean) via a finder method
> (findByLogin)
> 2) just the primary key back (can I do that? I don't need the whole
> object)
>
> Is there a standard way of doing that or do I need to call out to
> getting initialcontext, lookup, etc.?
>
> Thank you,
>
> Joel Shellman
> http://www.ants.com/
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--
Guillaume Rousse
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