Find attached the Holiday classes. Holiday is formed by several
HolidayElements. A HolidayElement is mainly identified by its date, but
several HolidayElement can share the same date if they are from
diffetent Holidays. Here the primary Key is formed by the date and the
Holiday id (which is a foreign key to Holiday).
I can't even set the "Id" annotation to a collection field (i'm
using a orm.xml file for metadata).
Thnaks in adavance
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 19, 2007 6:15 PM
To: [email protected]
Cc: ALONSO Fernando
Subject: Re: Collection field part of a compound primary key
Hi,
Could you please be more specific as to what you tried? I'm a bit
confused as to whether you're talking about a ToOne relationship or a
ToMany relationship being used as part of a primary key.
It would help if you would post your class (just the id fields would
be fine) and the id class you tried.
THanks,
Craig
On Jul 19, 2007, at 6:04 AM, CASERO Jaime wrote:
> Hello all,
>
> I'm wondering if OpenJPA supports the creation of a
> compound
> primary key formed by a basic field, and a collection. I have tried
> using an "Id class", and using "unique-constraint", but without any
> results.
>
>
>
> I think this is a very basic feature (A foreign key is
> part
> of the primary key) used frequently in any relational data model.
>
>
>
> Can anyone confirm this feature support?. Any simple
> example
> would be very appreciated.
>
>
>
> Thanks in advance, regards.
>
>
>
> Jaime Casero
>
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> -----------------------------
Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!
Confidentiality Statement:
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please note that you are strictly prohibited from disseminating or distributing
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