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https://issues.apache.org/jira/browse/JDO-735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429359#comment-15429359
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Andy Jefferson commented on JDO-735:
------------------------------------

Perhaps Extent should also be AutoCloseable? 

Perhaps Query should have isClosed() added and throw JDOUserException if a 
method called when already closed (for consistency with PersistenceManager). 
And ditto Extent if the first question is affirmative.

> Make PersistenceManager and Query support AutoCloseable (JDK1.7+)
> -----------------------------------------------------------------
>
>                 Key: JDO-735
>                 URL: https://issues.apache.org/jira/browse/JDO-735
>             Project: JDO
>          Issue Type: New Feature
>          Components: api, specification, tck
>            Reporter: Andy Jefferson
>            Assignee: Michael Bouschen
>             Fix For: JDO 3.2
>
>         Attachments: CloseWithActiveTxRollsBack.java
>
>
> So then it can be used with JDK1.7+ try-with-resources, as per 
> http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html



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