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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-10649" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-a89e8134-1320-4d6a-abdd-7dbc793edb50" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10649" style="color: #3b73af; text-decoration: none">HHH-10649</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-10649" style="color: #3b73af; text-decoration: none">When 2lc enabled, refresh entity and clear session cause dirty read in another session / transaction</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-a89e8134-1320-4d6a-abdd-7dbc793edb50" 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"> 5.1.1 </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">Assignee:</th>
<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">Components:</th>
<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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<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"> 25/Mar/2016 11:03 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"> h2 with MVCC </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">Labels:</th>
<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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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Priority:</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-static-major-642b763e-f89e-44c5-a9f0-2f2565717daf" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </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">Reporter:</th>
<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="gmshake" id="email_gmshake" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=gmshake" style="color:#6c797f;; color: #3b73af; text-decoration: none">Zhenlei Huang</a> </td>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Entity
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE, region = <span class="code-quote" style="color: #009100">"item"</span>)
<span class="code-keyword" style="color: #000091">public</span> class CacheableItem {
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Long</span> id;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> name;
<span class="code-keyword" style="color: #000091">public</span> CacheableItem() {
}
<span class="code-keyword" style="color: #000091">public</span> CacheableItem(<span class="code-object" style="color: #910091">String</span> name) {
<span class="code-keyword" style="color: #000091">this</span>.name = name;
}
@Id
@GeneratedValue(generator = <span class="code-quote" style="color: #009100">"increment"</span>)
@GenericGenerator(name = <span class="code-quote" style="color: #009100">"increment"</span>, strategy = <span class="code-quote" style="color: #009100">"increment"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">Long</span> getId() {
<span class="code-keyword" style="color: #000091">return</span> id;
}
<span class="code-keyword" style="color: #000091">public</span> void setId(<span class="code-object" style="color: #910091">Long</span> id) {
<span class="code-keyword" style="color: #000091">this</span>.id = id;
}
<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 = name;
}
}
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Test case:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -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; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@Test
<span class="code-keyword" style="color: #000091">public</span> void testUpdateAndRefresh() {
<span class="code-comment" style="color: #808080">// prepare data
</span> Session s = openSession();
s.beginTransaction();
CacheableItem item = <span class="code-keyword" style="color: #000091">new</span> CacheableItem( <span class="code-quote" style="color: #009100">"item"</span> );
s.save( item );
s.getTransaction().commit();
s.close();
Session s1 = openSession();
s1.beginTransaction();
CacheableItem item1 = s1.get( CacheableItem.class, item.getId() ); <span class="code-comment" style="color: #808080">// into persistent context
</span> item1.setName( <span class="code-quote" style="color: #009100">"some name"</span> );
s1.flush();
s1.clear(); <span class="code-comment" style="color: #808080">// clear persistent context
</span> s1.refresh( item1 );
item1 = s1.get( CacheableItem.class, item.getId() );
assertEquals( <span class="code-quote" style="color: #009100">"some name"</span>, item1.getName() );
<span class="code-comment" style="color: #808080">// open another session
</span> Session s2 = sessionFactory().openSession();
<span class="code-keyword" style="color: #000091">try</span> {
s2.beginTransaction();
CacheableItem item2 = s2.get( CacheableItem.class, item.getId() );
assertEquals( <span class="code-quote" style="color: #009100">"item"</span>, item2.getName() );
} <span class="code-keyword" style="color: #000091">catch</span> (PessimisticLockException expected) {
<span class="code-comment" style="color: #808080">// expected <span class="code-keyword" style="color: #000091; color: #808080">if</span> MVCC is not enabled
</span> } <span class="code-keyword" style="color: #000091">catch</span> (Exception e) {
<span class="code-keyword" style="color: #000091">throw</span> e;
} <span class="code-keyword" style="color: #000091">finally</span> {
s2.getTransaction().rollback();
s2.close();
}
s1.getTransaction().rollback();
s1.close();
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">hibernate.properties</p>
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<pre class="code-java" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
hibernate.dialect org.hibernate.dialect.H2Dialect
hibernate.connection.driver_class org.h2.Driver
hibernate.connection.url jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=<span class="code-keyword" style="color: #000091">true</span>
hibernate.connection.username sa
...
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">note: MVCC should be <b>enabled</b> in connection url </p> </td>
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<table align="left" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt">
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