I didn't mean the RDBMS (but of course, different RDBMS will force you to
have different implementations of the code that populates B and C) but
caching in the app server. Some app servers may cache values procedent from
SELECT query's; that means that if you insert/update/delete records in the
database the server might not catch up on the changes quickly (or at all),
except if you configure it properly(that depends on the app server, in
Orion, you should change an entity-deployment parameter named
exclusive-write-access to false).
HTH
JP
> -----Original Message-----
> From: Jianguo Wang [mailto:[EMAIL PROTECTED]]
> Sent: Martes, 06 de Febrero de 2001 18:19
> To: [EMAIL PROTECTED]
> Subject: Re: "Trigger" method in EJB application
>
>
> Hi Juan,
>
> I guess that my own case might be difficult if it is
> sever-dependent as you
> indicate, becase I am going to develop my application with MS
> SQL sever
> first and migrate it to DB2 later. Do you think it is
> feasible to go this
> approach in practice with my case?
>
> What do you mean by "caching of entity beans"? How does it relate to
> the "trigger" event?
>
> Thanks a lot.
>
> -John
>
> -----Original Message-----
> From: Juan Lorandi (Chile) [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, February 06, 2001 3:41 PM
> To: [EMAIL PROTECTED]
> Subject: Re: "Trigger" method in EJB application
>
> yes you can...
>
> but different server implementations (specially, caching of
> entity beans)
> might make this more difficult.
> Be sure to desactivate cache's if appropiate for your server.
>
> JP
>
> > -----Original Message-----
> > From: Jianguo Wang [mailto:[EMAIL PROTECTED]]
> > Sent: Martes, 06 de Febrero de 2001 17:29
> > To: [EMAIL PROTECTED]
> > Subject: "Trigger" method in EJB application
> >
> >
> > Dear friends,
> >
> > Can someone there give me a suggestion about the following
> question I
> > am facing now?
> >
> > I have several tables, let's say tables A, B and C. It is
> > required that,
> > when A is updated, a portion of data from A will be populated
> > into B and C.
> > This process can be achieved through implementing A, B and
> C as entity
> > beans.
> >
> > My question is if I can just use the "trigger" methods from
> > database server
> > to do the process of data populating without using beans at all.
> >
> > Thank you very much.
> >
> > -John
>
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