Return-Path: Delivered-To: apmail-openjpa-users-archive@locus.apache.org Received: (qmail 98065 invoked from network); 30 Jul 2008 23:34:49 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 30 Jul 2008 23:34:49 -0000 Received: (qmail 74076 invoked by uid 500); 30 Jul 2008 23:34:48 -0000 Delivered-To: apmail-openjpa-users-archive@openjpa.apache.org Received: (qmail 74051 invoked by uid 500); 30 Jul 2008 23:34:48 -0000 Mailing-List: contact users-help@openjpa.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: users@openjpa.apache.org Delivered-To: mailing list users@openjpa.apache.org Received: (qmail 74040 invoked by uid 99); 30 Jul 2008 23:34:48 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 30 Jul 2008 16:34:48 -0700 X-ASF-Spam-Status: No, hits=0.2 required=10.0 tests=SPF_HELO_PASS,SPF_PASS,WHOIS_MYPRIVREG X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of lists+1214986160035-208411@n2.nabble.com designates 216.139.236.158 as permitted sender) Received: from [216.139.236.158] (HELO kuber.nabble.com) (216.139.236.158) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 30 Jul 2008 23:33:52 +0000 Received: from isper.nabble.com ([192.168.236.156]) by kuber.nabble.com with esmtp (Exim 4.63) (envelope-from ) id 1KOLBS-0004zN-9q for users@openjpa.apache.org; Wed, 30 Jul 2008 16:34:18 -0700 Message-ID: <1217460858294-661302.post@n2.nabble.com> Date: Wed, 30 Jul 2008 16:34:18 -0700 (PDT) From: Pinaki Poddar To: users@openjpa.apache.org Subject: Re: support for identifying relations in JPA/OpenJPA In-Reply-To: <4890B9F3.1060706@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Nabble-From: ppoddar@apache.org References: <4890B9F3.1060706@gmail.com> X-Virus-Checked: Checked by ClamAV on apache.org Hi, > Does OpenJPA support identifying relationship (a.k.a compound identity > relations) between two entities? Yes. OpenJPA supports relation as identity. JPA 2.0 will standardize on this feature as 'derived identity'. This feature is described and demonstrated in OpenJPA manual [1]. A JIRA issue where multi-level derived identity is being used can be found here [2]. [1] http://openjpa.apache.org/docs/latest/manual/manual.html#ref_guide_pc_oid_entitypk [2] http://issues.apache.org/jira/browse/OPENJPA-207 -- View this message in context: http://n2.nabble.com/support-for-identifying-relations-in-JPA-OpenJPA-tp660963p661302.html Sent from the OpenJPA Users mailing list archive at Nabble.com.