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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-10584" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-f0d0b9b1-2c2a-4317-b71b-fef2984032e7" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10584" style="color: #3b73af; text-decoration: none">HHH-10584</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-10584" style="color: #3b73af; text-decoration: none">BatchFetching does not work with BytecodeEnhancement</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-f0d0b9b1-2c2a-4317-b71b-fef2984032e7" 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"> 5.0.8, 5.1.0 </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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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> BytecodeEnhancementWithBatchFetching.zip </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"> 03/Mar/2016 12:38 PM </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="rodrigo1503" id="email_rodrigo1503" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=rodrigo1503" style="color:#6c797f;; color: #3b73af; text-decoration: none">Rodrigo Augusto de Moraes Lourenço </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">Batch Fetching stops working when I enable bytecode enhancement.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I'm using hibernate-enhance-maven-plugin for build time enhancement.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I used reflection at the Test case, is there a better way to validate this issue?</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">
@Entity
<span class="code-keyword" style="color: #000091">public</span> class Team {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Integer</span> id;
@OneToMany(mappedBy=<span class="code-quote" style="color: #009100">"team"</span>)
<span class="code-keyword" style="color: #000091">private</span> List<Member> members;
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@Entity
<span class="code-keyword" style="color: #000091">public</span> class Member {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Integer</span> id;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> name;
@ManyToOne
@JoinColumn(name=<span class="code-quote" style="color: #009100">"team_id"</span>)
<span class="code-keyword" style="color: #000091">private</span> Team team;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">persistence.xml</p>
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<span class="code-tag" style="color: #000091"><property name=<span class="code-quote" style="color: #009100">"hibernate.batch_fetch_style"</span> value=<span class="code-quote" style="color: #009100">"DYNAMIC"</span> /></span>
<span class="code-tag" style="color: #000091"><property name=<span class="code-quote" style="color: #009100">"hibernate.default_batch_fetch_size"</span> value=<span class="code-quote" style="color: #009100">"100"</span> /></span>
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<b>Bytecode Enabled, n+1 problem loading members</b>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">Hibernate: <br> /* <br> from<br> Team */ select<br> team0_.id as id1_1_ <br> from<br> Team team0_<br> Hibernate: <br> /* load one-to-many com.test.entities.Team.members */ select<br> members0_.team_id as team_id3_0_1_,<br> members0_.id as id1_0_1_,<br> members0_.id as id1_0_0_,<br> members0_.name as name2_0_0_,<br> members0_.team_id as team_id3_0_0_ <br> from<br> Member members0_ <br> where<br> members0_.team_id=?</p>
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<b>Bytecode Disabled, Batch Fetching working properly</b>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">Hibernate: <br> /* <br> from<br> Team */ select<br> team0_.id as id1_1_ <br> from<br> Team team0_<br> Hibernate: <br> /* load one-to-many com.test.entities.Team.members */ select<br> members0_.team_id as team_id3_0_1_,<br> members0_.id as id1_0_1_,<br> members0_.id as id1_0_0_,<br> members0_.name as name2_0_0_,<br> members0_.team_id as team_id3_0_0_ <br> from<br> Member members0_ <br> where<br> members0_.team_id in (<br> ?,?,?,?,?,?,?,?,?,?<br> )</p>
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