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Date: Tue, 3 Oct 2006 19:51:21 -0700 (PDT)
From: "Craig Russell (JIRA)" <jira@apache.org>
To: jdo-dev@db.apache.org
Subject: [jira] Commented: (JDO-427) StateTransitionsReturnedObjects
 incorrectly expects detachCopy() to allow passing a detached instance
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    [ http://issues.apache.org/jira/browse/JDO-427?page=comments#action_12439710 ] 
            
Craig Russell commented on JDO-427:
-----------------------------------

This is a spec bug. The sentence "If the parameter instance is detached, then JDOUserException is thrown." should be read as part of the previous paragraph that describes the behavior if a transaction is not active. In this case, detached and transient instances cannot be made persistent before detach because makePersistent requires an active transaction.

The operative behavior is "If a detachCopy method is called with an active transaction, the parameter Collection of instances is first made persistent, and the reachability algorithm is run on the instances. "

I'd like to resolve this issue as invalid, since the intent is to only throw an exception if detached and transient instances in the reachability graph cannot be made persistent (if there is no active transaction). The maintenance release will clarify the intent.


> StateTransitionsReturnedObjects incorrectly expects detachCopy() to allow passing a detached instance
> -----------------------------------------------------------------------------------------------------
>
>                 Key: JDO-427
>                 URL: http://issues.apache.org/jira/browse/JDO-427
>             Project: JDO
>          Issue Type: Bug
>          Components: tck20
>            Reporter: Marc Prud'hommeaux
>         Assigned To: Craig Russell
>            Priority: Minor
>
> Element 11 (0-based) of the "detachCopy with active tx" array in org/apache/jdo/tck/lifecycle/StateTransitionsReturnedObjects.java asserts that a detached instance passed to detachCopy() should result in its state being unchanged. However, section 12.6.8 of the JDO 2 spec explicitly states: "If the parameter instance is detached, then JDOUserException is thrown."
> To fix it to check for the correct behavior, element 11 should be changed from "UNCHANGED" to "ERROR".

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