Mailing-List: contact dev-help@openjpa.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@openjpa.apache.org
Date: Thu, 28 Apr 2011 19:52:03 +0000 (UTC)
From: "Rick Curtis (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
Message-ID: <21225415.9676.1304020323185.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <229011570.6379.1303922703063.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (OPENJPA-1986) Extra queries being generated
 when cascading a persist
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/OPENJPA-1986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13026655#comment-13026655 ] 

Rick Curtis commented on OPENJPA-1986:
--------------------------------------

When porting this code back to 2.1.x, we need to make sure to flip the compatibility option so we don't break any existing applications.

> Extra queries being generated when cascading a persist
> ------------------------------------------------------
>
>                 Key: OPENJPA-1986
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1986
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: performance
>    Affects Versions: 2.0.1, 2.1.0, 2.2.0
>            Reporter: Rick Curtis
>            Assignee: Rick Curtis
>             Fix For: 2.2.0
>
>         Attachments: OPENJPA-1986.patch
>
>
> I found a scenario where extra queries were being generated while cascading a persist to a new Entity. See the following example:
> @Entity
> public class CascadePersistEntity implements Serializable {
>     private static final long serialVersionUID = -8290604110046006897L;
>     @Id
>     long id;
>     @OneToOne(cascade = CascadeType.ALL)
>     CascadePersistEntity other;
> ...
> }
> and the following scenario:
> CascadePersistEntity cpe1 = new CascadePersistEntity(1);
> CascadePersistEntity cpe2 = new CascadePersistEntity(2);
> cpe1.setOther(cpe2);
> em.persist(cpe1);
> This results in two inserts and one select. The extra select is what I'm going to get rid of with this JIRA.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira