You can try Pramati Server EJB 2.0 Preview release
(http://www.pramati.com/products/server30/download.htm) . It supports
mapping a 1->N relaitonship to two tables as well as three tables. The
Deploy Tool does not create tables. It supports mapping to tables already
existing in the Data Base.
Amit Khanna
www.pramati.com
----- Original Message -----
From: Cedric Beust <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, July 12, 2001 8:01 PM
Subject: Re: Relationship in j2ee - deploytool
> > From: A mailing list for Enterprise JavaBeans development
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Alvaro Mota
>
> > The deploytool make 3 tables for this relationship. CustomerBeanTable;
> > AdressesBeanTable;CustomerAddress;
> > But, i don�t hoping, I would like that it generate 2 tables, and
> > AdressesBeanTable with one FK to CustomerBeanTable;
>
> This is implementation dependent, the EJB 2.0 specification doesn't
mention
> anything about how relationships should be implemented.
>
> The above method is interesting if you have existing tables that you are
> trying to map to EJB 2.0 entities (and modifying the schemas is not an
> option). It is not intrusive but carries a non-negligible overhead.
>
> If you are starting from scratch and you can design your own schema, then
> the solution you are looking for is more optimal (less joins, less tables)
> at the cost of adding columns for your foreign keys.
>
> To answer your question: you will have to either convince the J2EE RI
> developers to implement the second approach or switch to an EJB container
> that supports it.
>
> --
> Cedric
>
>
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