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From "Andy Jefferson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JDO-686) Ability to attach a transient object
Date Sat, 10 Sep 2011 08:15:09 GMT
Ability to attach a transient object
------------------------------------

                 Key: JDO-686
                 URL: https://issues.apache.org/jira/browse/JDO-686
             Project: JDO
          Issue Type: New Feature
          Components: api, specification, tck
            Reporter: Andy Jefferson


As per this thread
http://mail-archives.apache.org/mod_mbox/db-jdo-user/200808.mbox/%3C48AD77AA.5090308@artnology.com%3E
the ability to call pm.makePersistent(obj) with a transient object where that transient object
has its identity set and where it corresponds to an object in the datastore. Obviously that
would only work for application-identity (since it has PK fields, whereas datastore-id has
none so "id" not really defined by the object). 

One option for datastore-identity would be to have a new method like
pm.makePersistentForIdentity(Object obj, Object id);
This would obviously not allow you to persist by reachability, so whether we just don't permit
it for datastore-identity is one option, or alternatively pass in a Map of Object keyed by
the identity.

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