[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5871) Problem locking an proxy to session when an detached proxy is already on its persistence context

[pedro santos (JIRA)]

Problem locking an proxy to session when an detached proxy is already on its persistence context
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                 Key: HHH-5871
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5871
             Project: Hibernate Core
          Issue Type: Bug
    Affects Versions: 3.6.0
         Environment: web app over tomcat using hibernate version 3.5.6-Final and spring.version 3.0.5.RELEASE with SpringWebApplicationFactory configured as an filter on web.xml
            Reporter: pedro santos
         Attachments: stackTrace.txt, test-fix.patch

Problem locking an proxy to session when an detached proxy is already on its persistence context


The call: session.lock(proxy, LockMode.NONE) is throwing:

org.hibernate.TransientObjectException: Proxy is detached (i.e, session is null). The read-only/modifiable setting is only accessible when the proxy is associated with an open session.

The problem is that I'm not able to lock an proxy on session due an old detached proxy already add on its persistence context. I'm sending an test case demonstrating the bug, plus the fix on TwoPhaseLoad to don't test lazyInitializer ready only property when it is not available.

What is weird on all this problem is: how did an detached proxy get in another opened session? I'm simulating it on the test case, but my application code don't even look like it. I created the test case only by analyzing the exception stack trace. This problem is happening time to time and crash the production app.

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