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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-9997" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-improvement-fc79dbdd-9a87-4e24-ba51-7483d23bd0f5" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9997" style="color: #3b73af; text-decoration: none">HHH-9997</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-9997" style="color: #3b73af; text-decoration: none">Hibernate Envers automatically adds a clause 'order by' by ID Revision when no projection or order is specified</a> </span>
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Issue Type:
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Affects Versions:
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4.2.20
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Unassigned
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Created:
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29/Jul/2015 03:27 AM
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Priority:
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Reporter:
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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="ryanemerson" id="email_ryanemerson" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=ryanemerson" style="color:#6c797f;; color: #3b73af; text-decoration: none">Ryan Emerson</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Hibernate Envers (Criteria API) automatically adds a clause 'order by' by ID Revision when not is added projection and not is added order. This procedure burdening the query performance for a user, resulting in a warning that the I/O limit was exceeded.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">In order to allow the user to be able to disable this behaviour, I propose that the addOrder method in AbstractAuditQuery.java be updated so that if a Null value is passed as a parameter, no action occurs, but the hasOrder flag is set to true. This should not break existing queries as addOrder previously throw a NullPointerException if null was passed as a parameter. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Hence, this allows users to create an AuditQuery as follows if they do not want the 'Order By' statement:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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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">
AuditQuery query = getAuditReader()
.createQuery()
.forRevisionsOfEntity(StrIntTestEntity.class, <span class="code-keyword" style="color: #000091">false</span>, <span class="code-keyword" style="color: #000091">true</span>)
.addOrder(<span class="code-keyword" style="color: #000091">null</span>);
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">See also: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1247316" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://bugzilla.redhat.com/show_bug.cgi?id=1247316</a></p>
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