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Date: Mon, 9 Mar 2009 07:56:52 -0700 (PDT)
From: "Dianne Richards (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
Subject: [jira] Updated: (OPENJPA-885) Support clear methods on
 EntityManager, including new CascadeType.CLEAR
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     [ https://issues.apache.org/jira/browse/OPENJPA-885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dianne Richards updated OPENJPA-885:
------------------------------------

    Attachment: CompatibilityProblemPatch.txt

I'm attaching the CompatibilityProblemPatch file. This contains 2 test cases. The first one,  TestCompatibilityChanges, show that things are working fine. The secondOne, TestCompatibilityProblem, shows the problem. In the second one, I've added a property change to the setUp call. This apparently ends up passing the property in on the createEntityManagerFactory().

Also in this patch are 2 code changes. The Compatibility class has several new instance variables with associated setter/getter methods. The PersistenceProductDerivation class has calls to the setter methods to change the default values for openjpa. 

So, to repeat what is happening, the PPD changes are working correctly initially, as seen in the TestCompatibilityChanges test case. But, when a change to Compatibility is specified on the createEMF(), these changes are lost because the entire Compatibility object is lost when the _value variable is set to null. I realize the this is a singleton. However, this property seems to be a special case because iterative changes can be made to it.

> Support clear methods on EntityManager, including new CascadeType.CLEAR 
> ------------------------------------------------------------------------
>
>                 Key: OPENJPA-885
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-885
>             Project: OpenJPA
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Dianne Richards
>            Assignee: Dianne Richards
>             Fix For: 2.0.0
>
>         Attachments: CompatibilityProblemPatch.txt, patch.txt
>
>
> Support the 2.0 new  EntityManager clear() methods. Also support the new CascadeType.CLEAR.

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