From jdo-dev-return-5857-apmail-db-jdo-dev-archive=www.apache.org@db.apache.org Wed Jun 20 22:24:00 2007 Return-Path: Delivered-To: apmail-db-jdo-dev-archive@www.apache.org Received: (qmail 52828 invoked from network); 20 Jun 2007 22:23:59 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 20 Jun 2007 22:23:59 -0000 Received: (qmail 75798 invoked by uid 500); 20 Jun 2007 22:23:59 -0000 Mailing-List: contact jdo-dev-help@db.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: jdo-dev@db.apache.org Delivered-To: mailing list jdo-dev@db.apache.org Received: (qmail 75765 invoked by uid 99); 20 Jun 2007 22:23:59 -0000 Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 20 Jun 2007 15:23:58 -0700 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=UNPARSEABLE_RELAY X-Spam-Check-By: apache.org Received-SPF: pass (herse.apache.org: local policy) Received: from [192.18.43.132] (HELO sca-es-mail-1.sun.com) (192.18.43.132) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 20 Jun 2007 15:23:53 -0700 Received: from fe-sfbay-10.sun.com ([192.18.43.129]) by sca-es-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l5KMNX2A011775 for ; Wed, 20 Jun 2007 15:23:33 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-10.sun.com by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JJY00901GTX4U00@fe-sfbay-10.sun.com> (original mail from Craig.Russell@Sun.COM) for jdo-dev@db.apache.org; Wed, 20 Jun 2007 15:23:33 -0700 (PDT) Received: from [192.168.0.11] (c-24-6-172-77.hsd1.ca.comcast.net [24.6.172.77]) by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0JJY00ICOGV7A370@fe-sfbay-10.sun.com> for jdo-dev@db.apache.org; Wed, 20 Jun 2007 15:23:32 -0700 (PDT) Date: Wed, 20 Jun 2007 15:23:24 -0700 From: Craig L Russell Subject: Annotation overrides Sender: Craig.Russell@Sun.COM To: Apache JDO project , JDO Expert Group Message-id: MIME-version: 1.0 X-Mailer: Apple Mail (2.752.3) Content-type: multipart/signed; protocol="application/pkcs7-signature"; boundary=Apple-Mail-164-60058268; micalg=sha1 X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail-164-60058268 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Hi, I'm looking at how annotations can be overridden by the xml metadata files. It seems that the .jdo metadata that's not .orm metadata is an exact duplicate of the annotation metadata. Is there ever a case where you would want to override the annotation with jdo metadata? Seems that it's really only the orm metadata in the annotations that you want to override. We did carefully consider that the orm metadata is just mapping, and doesn't include information that would affect the object model. In this case, it seems that you would want to support these combinations: no annotations + .jdo (with jdo and orm metadata) no annotations + .jdo (with jdo and orm metadata) + .orm (overrides all orm in the jdo) annotations alone (includes jdo and orm metadata) annotations + .orm (overrides all orm in the annotations) So I'm proposing that we disallow annotations + jdo metadata file. In other words, if you make the decision to provide annotations, you can't override the jdo metadata. The annotations are closer to the Java file which is what the jdo metadata is for. Craig Craig Russell Architect, Sun Java Enterprise System http://java.sun.com/products/jdo 408 276-5638 mailto:Craig.Russell@sun.com P.S. A good JDO? 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