<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
#email-body { min-width: 30em !important; }
#email-page { padding: 8px !important; }
#email-banner { padding: 8px 8px 0 8px !important; }
#email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
#email-fields { padding: 0 8px 8px 8px !important; }
#email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
<tr valign="top">
<td id="email-page" style="padding:16px !important;">
<table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
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<td bgcolor="#3e4c4e" style="background-color:#3e4c4e;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="https://www.jboss.org/dms/hibernate/images/jira/jiraheader_hibernate.png" alt="" style="vertical-align:top;" /></td>
</tr><tr valign="top">
<td id="email-banner" style="padding:32px 32px 0 32px;">
<table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
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<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
<img id="email-avatar" src="https://hibernate.onjira.com/secure/useravatar?avatarId=10162" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
<div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
<a class="user-hover" rel="krusche" id="email_krusche" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=krusche" style="color:#6c797f;">Stephan Krusche</a>
commented on <img src="https://hibernate.onjira.com/images/icons/improvement.gif" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7605'>HHH-7605</a>
</div>
<div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
<a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-7605'><strong>Provide details "An entity copy was already assigned to a different entity."</strong></a>
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<td id="email-fields" style="padding:0 32px 32px 32px;">
<table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
<tr valign="top">
<td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
<td>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<td colspan="2" style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 16px 0;width:100%;">
<div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;"><p>I have the same problem with version 4.1.9 (I am using the CDO Hibernate Store, where my entity mapping is generated at runtime according to my EMF ecore metamodel). If I go back to Hibernate Version 4.1.1, there is no exception.</p>
<p>@Matthias: It's really funny that you say, that it is likely a bug in the application when the Hibernate framework throws this exception, without giving any arguments why you think this is the case. In my opinion the case is quite different: All the applications worked without this problem when they use an earlier Hibernate version. With a newer Hibernate version, this exception occurs (which is by the way a quite bad exception, because it says nothing about the context and does not tell any details about the reason why it is thrown). This means that at least something changed in the behavior of Hibernate that was not clearly communicated to the application developers. At least I cannot find any statement related to this case or to this exception in the release notes. </p>
<p>Of course we can try our luck in the forum, but if nobody answers, what else shall we do than filing a bug?<br/>
By the way, there was already a forum question on September 2012 (<a href="https://forum.hibernate.org/viewtopic.php?p=2467184">https://forum.hibernate.org/viewtopic.php?p=2467184</a>), but nobody answered!</p>
<p>The funniest statement in my opinion is the following: "What you would do is place a breakpoint inside EventCache.put() and you'll see which entity causes it."<br/>
You cannot really mean that statement seriously, can you?<br/>
Is it so difficult to insert the entity name into this exception or to document somewhere why such an exception can happen? Do you really assume that every developer sets up Hibernate with source code to be able to debug in and has enough time to perchance find the related problem to this exception while debugging?</p></div>
<div style="color:#505050;padding:4px 0 0 0;"> </div>
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</td><!-- End #email-page -->
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<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
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</table><!-- End #email-wrap -->
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