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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9442" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-1442c9a9-0154-4ff0-ac7d-444f7839687f" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9442" style="color: #3b73af; text-decoration: none">HHH-9442</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-9442" style="color: #3b73af; text-decoration: none">Envers does not work when entity enforces property non-null in setter</a> </span>
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envers
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13/Oct/2014 08:37 AM
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="piofinsy" id="email_piofinsy" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=piofinsy" style="color:#6c797f;; color: #3b73af; text-decoration: none">Piotr Findeisen</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">With Hibernate, when I have an entity property that must not be <tt>null</tt>, I cat enforce in a fail-fast manner in the property setter</p>
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@Column(nullable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> getName() {
<span class="code-keyword" style="color: #000091">return</span> name;
}
<span class="code-keyword" style="color: #000091">public</span> void setName(<span class="code-object" style="color: #910091">String</span> name) {
<span class="code-keyword" style="color: #000091">this</span>.name = checkNotNull(name, <span class="code-quote" style="color: #009100">"name"</span>);
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">While this might be considered superfluous (a DB <tt>NOT NULL</tt> constraint exists anyway), I find this valuable, as – as I said – provides fail-fast validation.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Now, if I want to have the property <tt>@Audited</tt> then during reading audit records for delete, Envers fails with</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
org.hibernate.PropertyAccessException: Exception occurred inside setter of com.syncron.bpp.security.entity.Role.name
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:88)
at org.hibernate.envers.entities.mapper.SinglePropertyMapper.mapToEntityFromMap(SinglePropertyMapper.java:96)
at org.hibernate.envers.entities.mapper.MultiPropertyMapper.mapToEntityFromMap(MultiPropertyMapper.java:137)
at org.hibernate.envers.entities.EntityInstantiator.createInstanceFromVersionsEntity(EntityInstantiator.java:109)
at org.hibernate.envers.query.impl.RevisionsOfEntityQuery.list(RevisionsOfEntityQuery.java:134)
at org.hibernate.envers.query.impl.AbstractAuditQuery.getResultList(AbstractAuditQuery.java:106)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:65)
... 51 more
Caused by: java.lang.NullPointerException: name
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:208)
at com.example.MyEntity.setName(Role.java:126)
... 56 more
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This might be logical, since there is no "name" stored in AUD table, but I've never told Envers to call my setter in this case. Why would it call it if it knows the data is all nulls?</p>
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