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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-10679" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-bcbb3b47-b08f-43ae-9983-f23aaeaf5bd2" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10679" style="color: #3b73af; text-decoration: none">HHH-10679</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-10679" style="color: #3b73af; text-decoration: none">Subselect not used when batch loading by id</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-bcbb3b47-b08f-43ae-9983-f23aaeaf5bd2" 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"> 5.0.9, 5.1.0, 4.2.21 </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"> 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"> 11/Apr/2016 13:45 PM </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-major-fa715ec9-caec-4647-989d-e9f7d0b2ca10" 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="stephen.fikes" id="email_stephen.fikes" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=stephen.fikes" style="color:#6c797f;; color: #3b73af; text-decoration: none">Stephen Fikes</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">An entity class is batch enabled and is using SUBSELECT fetch.</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
@BatchSize(size = 1000)
<span class="code-keyword" style="color: #000091">public</span> class EmployeeGroupSubselect {
...
@OneToMany(cascade = CascadeType.ALL)
@Fetch(FetchMode.SUBSELECT)
<span class="code-keyword" style="color: #000091">private</span> List<Employee> employees = <span class="code-keyword" style="color: #000091">new</span> ArrayList<Employee>();
....
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When loading a set of entities and their associations using ID based proxies created with <tt>em.getReference(...)</tt>, rather than using subselect each assocation is loaded with an individual query like the below:</p>
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<pre class="code-sql" style="margin: 10px 0 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span>
employees0_.EmployeeGroupSubselect_departmentName as Employee1_3_0_,
employees0_.EmployeeGroupSubselect_groupName as Employee2_3_0_,
employees0_.employees_id as employee3_3_0_,
employee1_.id as id1_1_1_,
employee1_.name as name2_1_1_
<span class="code-keyword" style="color: #000091">from</span>
EmployeeGroupSubselect_Employee employees0_
inner join
Employee employee1_
on employees0_.employees_id=employee1_.id
<span class="code-keyword" style="color: #000091">where</span>
employees0_.EmployeeGroupSubselect_departmentName=?
and employees0_.EmployeeGroupSubselect_groupName=?
</pre>
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