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Subject: RE: OneToOne Broken
Date: Sun, 10 Dec 2006 12:27:13 -0800
Message-ID: <5C219175D559A64D8C2CC65E41D36856853BC7@repbex01.amer.bea.com>
In-Reply-To: <1282BAB4-6F7B-4BEA-86D7-D8E7F1A8B69A@iq80.com>
Thread-Topic: OneToOne Broken
Thread-Index: Accceat5cv/jmRXMTxu+9/aow5eFtgAH2JqA
From: "Pinaki Poddar" <ppoddar@bea.com>
To: <open-jpa-dev@incubator.apache.org>

> I agree, but wanted the smallest test code possible :)
The classes that access public persistent fields are persistence-aware
(they themselves may or may not be persitence-capable). The test classes
are persistence-aware in this case. Persistence-aware classes need to be
enhanced also.=20=20


Pinaki Poddar
BEA Systems
415.402.7317=20=20


-----Original Message-----
From: Dain Sundstrom [mailto:dain@iq80.com]=20
Sent: Sunday, December 10, 2006 8:38 AM
To: open-jpa-dev@incubator.apache.org
Subject: Re: OneToOne Broken

On Dec 9, 2006, at 9:01 PM, Craig L Russell wrote:

> Hi Dain,
>
> You don't have a relationship from Article to Magazine, so it's a=20
> unidirectional mapping.

Are you sure?  If you uncomment the line that is commented out in
testResourceLocal it works.  I assume that means that I do have a
relationship since OpenJPA is correctly filling in the fk column.

> Add a Magazine mag; field in Article and see if it starts working.

That is the way I originally had the test code, but I wanted to create
the smallest test code possible, so I remove it.

Anyway, I just added a "public Magazine magazine" field to the Article
class and added this to the test-mappings.xml file:

   <one-to-one name=3D"magazine" mapped-by=3D"coverArticle"/>

...and it still fails.

> You will also need to identify the "owner" of the relationship in=20
> order to make it work at all.

I thought when I declare the "join-column" in the Magazine.coverArticle
field, that made it the owner.  How do I declare the owner of the
relationship?

> Just a note, JPA does not do well with unidirectional relationships.=20
> There is more unspecified than specified there.

OK. I'll avoid them

> And public fields are JPA for evil.

I agree, but wanted the smallest test code possible :)

> Craig

Thanks Craig,

-dain
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