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<a class="user-hover" rel="adar" id="email_adar" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=adar" style="color:#6c797f;">Adar Dembo</a>
created <img src="https://hibernate.onjira.com/images/icons/newfeature.gif" height="16" width="16" border="0" align="absmiddle" alt="New Feature"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-8051'>HHH-8051</a>
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<a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-8051'><strong>targetAuditMode=RelationTargetAuditMode.NOT_AUDITED should allow for missing entity targets</strong></a>
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<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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<img src="https://hibernate.onjira.com/images/icons/newfeature.gif" height="16" width="16" border="0" align="absmiddle" alt="New Feature"> New Feature
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<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
4.1.4 </td>
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<strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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Unassigned </td>
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<strong style="font-weight:normal;color:#505050;">Components:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
envers </td>
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<strong style="font-weight:normal;color:#505050;">Created:</strong>
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05/Mar/13 11:58 AM
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<strong style="font-weight:normal;color:#505050;">Description:</strong>
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<p style='margin-top:0;margin-bottom:10px;'>If you use targetAuditMode=RelationTargetAuditMode.NOT_AUDITED on a relation and delete the (non-audited) target entity, queries for audits that contain links to the deleted target entity will throw an exception. Where it is thrown depends on how the source entity is implemented: if it implements hashCode() and includes the target entity in the hash, it'll be deep within the query itself.</p>
<p style='margin-top:0;margin-bottom:10px;'>Here's a concrete example:</p>
<div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent">
<pre class="code-java">class Foo {
@Audited(withModifiedFlag=<span class="code-keyword">true</span>)
<span class="code-object">String</span> interestingField;
@Audited(targetAuditMode=RelationTargetAuditMode.NOT_AUDITED)
Bar myBar;
<span class="code-keyword">public</span> <span class="code-object">boolean</span> equals(<span class="code-object">Object</span> obj) {
<span class="code-comment">// compares interestingField and myBar
</span> }
<span class="code-keyword">public</span> <span class="code-object">int</span> hashCode() {
<span class="code-comment">// hashes interestingField and myBar
</span> }
}
class Bar {
...
}</pre>
</div></div>
<p style='margin-top:0;margin-bottom:10px;'>Now suppose we issue three transactions:</p>
<ol>
<li>Transaction 1 creates and persists a Foo and a Bar.</li>
<li>Transaction 2 deletes both the Foo and the Bar.</li>
<li>Transaction 3 queries for all revisions.</li>
</ol>
<p style='margin-top:0;margin-bottom:10px;'>The query will throw an exception like so:</p>
<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre>javax.persistence.EntityNotFoundException: Unable to find Bar with id 1
at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:155)
at org.hibernate.proxy.AbstractLazyInitializer.checkTargetState(AbstractLazyInitializer.java:171)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:160)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:195)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
...
at org.hibernate.envers.tools.Triple.hashCode(Triple.java:74)
at java.util.HashMap.put(HashMap.java:372)
at org.hibernate.envers.reader.FirstLevelCache.putOnEntityNameCache(FirstLevelCache.java:87)
at org.hibernate.envers.entities.EntityInstantiator.createInstanceFromVersionsEntity(EntityInstantiator.java:104)
at org.hibernate.envers.query.impl.RevisionsOfEntityQuery.list(RevisionsOfEntityQuery.java:134)
at org.hibernate.envers.query.impl.AbstractAuditQuery.getResultList(AbstractAuditQuery.java:105)
...
</pre>
</div></div>
<p style='margin-top:0;margin-bottom:10px;'>It would be nice to fail gracefully in the face of non-existent entity targets, by nullifying the relation, perhaps.</p>
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<strong style="font-weight:normal;color:#505050;">Project:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a style="color:#6c797f;" href="https://hibernate.onjira.com/browse/HHH">Hibernate ORM</a>
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<strong style="font-weight:normal;color:#505050;">Priority:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<img src="https://hibernate.onjira.com/images/icons/priority_major.gif" height="16" width="16" border="0" align="absmiddle" alt="Major"> Major
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<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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<a class="user-hover" rel="adar" id="email_adar" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=adar" style="color:#6c797f;">Adar Dembo</a>
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