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Date: Wed, 18 Feb 2009 18:35:04 -0800 (PST)
From: "Donald Woods (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
Subject: [jira] Assigned: (OPENJPA-925) Bidirectional OneToOne relation
 incorrectly set in loadEagerJoin
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     [ https://issues.apache.org/jira/browse/OPENJPA-925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Donald Woods reassigned OPENJPA-925:
------------------------------------

    Assignee: Michael Dick  (was: Catalina Wei)

> Bidirectional OneToOne relation incorrectly set in loadEagerJoin
> ----------------------------------------------------------------
>
>                 Key: OPENJPA-925
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-925
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 1.2.0, 1.2.1, 1.3.0, 2.0.0-M1, 2.0.0
>            Reporter: Catalina Wei
>            Assignee: Michael Dick
>             Fix For: 1.3.0, 2.0.0
>
>         Attachments: OPENJPA-925-branches12x.patch, OPENJPA-925-branches12x.patch
>
>
> A test scenario uncovers a bug in eager loading bidirectional OneToOne relation.
>   OneOneParent  has a bidirectional OneToOne relation with OneOneChild as annotated as following:
> @Entity
> public class OneOneParent {
> ...
>     @OneToOne(mappedBy="parent")
>     private OneOneChild child;
> }
> @Entity
> public class OneOneChild {
> ...
>     @OneToOne
>     private OneOneParent parent;
> }
> Testcase:
> String query = "select c FROM OneOneChild c";
>         Query q = em.createQuery(query);
>         List list = q.getResultList();
>         for (int i = 0; i < list.size(); i++) {
>             OneOneChild c = (OneOneChild) list.get(i);
>             assertEquals(c, c.getParent().getChild());
>         }
> We expect c equals c.getParent().getChild(), but instead got assertion failure.
> It seems to be a bug introduced in performance improvement work (the related issues: OPENJPA-292 & OPENJPA-744).

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