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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-10413" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-d73feda5-3742-4b5f-858a-8346e30aadd7" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10413" style="color: #3b73af; text-decoration: none">HHH-10413</a> </td>
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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-10413" style="color: #3b73af; text-decoration: none">since HHH-5138, impossible to use a byte[] as the version attribute as the versionComparator is allways null</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th>
<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-d73feda5-3742-4b5f-858a-8346e30aadd7" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.0.6, 3.6.0 </td>
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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"> Unassigned </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 05/Jan/2016 07:36 AM </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Environment:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Hibernate 3.6.0 and further </td>
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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"> hibernate core </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-minor-d343f9c7-b02b-48fa-9624-20b77fe8f15c" height="16" width="16" border="0" align="absmiddle" alt="Minor" style="vertical-align: text-bottom"> Minor </td>
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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="Aldian" id="email_Aldian" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=Aldian" style="color:#6c797f;; color: #3b73af; text-decoration: none">Aldian</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">Since <a href="https://hibernate.atlassian.net/browse/HHH-5138" title="Redesign types + introduce TypeRegistry & TypeResolver" class="issue-link" data-issue-key="HHH-5138" style="color: #3b73af; text-decoration: none"><del>HHH-5138</del></a> and redesign of types, the type descriptor for <em>byte[]</em> is <em>PrimitiveByteArrayTypeDescriptor</em>. So when you declare an attribute of this type in an entity, Hibernate will use a <em>BinaryType _to map it. When it comes to getting the _versionComparator</em>, it will call this:</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">return PrimitiveByteArrayTypeDescriptor.INSTANCE.getComparator();</p>
</blockquote> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Now when you come to look to how this INSTANCE is built, the constructor <em>AbstractTypeDescriptor(Class<T> type, MutabilityPlan<T> mutabilityPlan)</em> is called with arguments equals to:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">bq: byte[].class, ArrayMutabilityPlan.INSTANCE</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">And then comes the comparator affectation:</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0"> /**</p>
<ul>
<li>Initialize a type descriptor for the given type. Assumed immutable.<br> *</li>
<li>@param type The Java type.</li>
<li>@param mutabilityPlan The plan for handling mutability aspects of the java type.<br> */<br> @SuppressWarnings(
<div class="error">
<span class="error">Unknown macro: { "unchecked" }</span>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">)<br> protected AbstractTypeDescriptor(Class<T> type, MutabilityPlan<T> mutabilityPlan) </p>
<div class="error">
<span class="error">Unknown macro: { this.type = type; this.mutabilityPlan = mutabilityPlan; this.comparator = Comparable.class.isAssignableFrom( type ) ? (Comparator<T>)ComparableComparator.INSTANCE }</span>
</div></li>
</ul>
</blockquote> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Now the problem is that <em>Comparable.class.isAssignableFrom( byte[].class)</em> returns false, meaning that starting with Hibernate 3.6.0 and further, it becomes impossible to use a <em>byte[]</em> attribute as the version mapper when determining if an element can be inserted in second level cache?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Or maybe I am missing something. This is quite critical for us as we are trying to migrate to more recent versions of hibernate and almost all of our version attributes are of the kind</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">// entity attribute<br> private byte[] timestamp;</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">// hbm.xml<br> <version type="binary" name="timestamp" generated="always" unsaved-value="undefined"><br> <column name="timestamp" /><br> </version></p>
</blockquote> </td>
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