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<td class="page-title-pattern-first-line " style="padding: 0; 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-11540" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-f15b9a2c-5445-4b14-9491-67ccf546fac4" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11540" style="color: #3b73af; text-decoration: none">HHH-11540</a> </td>
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<td style="vertical-align: top;; padding: 0; 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-11540" style="color: #3b73af; text-decoration: none">Metamodel does not include embeddable type used in type variables</a> </span> </td>
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<td class="has-icon" style="padding: 0; 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-f15b9a2c-5445-4b14-9491-67ccf546fac4" 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.2.8 </td>
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<td style="padding: 0; 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: 0; 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: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 02/Mar/2017 11:43 AM </td>
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<td class="has-icon" style="padding: 0; 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-0cd635d6-afbd-45bb-8b85-5cadc28b5a78" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="christian.beikov" id="email_christian.beikov" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=christian.beikov" style="color:#6c797f;; color: #3b73af; text-decoration: none">Christian Beikov</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">This is a kind of a follow up because <span class="jira-issue-macro" data-jira-key="HHH-10690">
<!-- replace the span with an AUI template --> <a href="https://hibernate.atlassian.net/browse/HHH-10690" class="jira-issue-macro-key issue-link" title="Metamodel returns incorrect identifier types if they're a generic field of a superclass" style="color: #3b73af; text-decoration: none"> <img class="icon" src="https://hibernate.atlassian.net/secure/viewavatar?size=xsmall&avatarId=12143&avatarType=issuetype"> HHH-10690 </a> <span class="aui-lozenge aui-lozenge-subtle aui-lozenge-complete jira-macro-single-issue-export-pdf" style="background: #cccccc; border: 1px solid #cccccc; border-radius: 3px; color: #333333; display: inline-block; font-size: 11px; font-weight: bold; line-height: 99%; margin: 0; padding: 2px 5px; text-align: center; text-decoration: none; text-transform: uppercase; background-color: #ffffff; border-color: #cccccc; color: #333333" bgcolor="#ffffff">Open</span> </span> actually is part of the reason for this problem. Embeddable types that only ever get used in a type variable are not picked up by the JPA metamodel implementation. Let's take a look at the following example</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
@MappedSuperclass
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>BaseEntity<T <span class="code-keyword" style="color: #000091">extends</span> Serializable> {
@EmbeddedId
<span class="code-keyword" style="color: #000091">private</span> T id;
}
@Embeddable
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>MyEntityId <span class="code-keyword" style="color: #000091">implements</span> Serializable {
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> someValue;
}
@Entity
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>MyEntity <span class="code-keyword" style="color: #000091">extends</span> BaseEntity<MyEntityId> {
}
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The type <tt>MyEntityId</tt> will not be available via <tt>metamodel.managedType(MyEntityId.class)</tt> because currently, Hibernate only adds types to the type registry that are either root types or the types of attributes. Since the attribute <b>id</b> in this case has the type bound as attribute type i.e. <tt>java.io.Serializable</tt> there is no managed type instance created for the real type <tt>MyEntityId</tt>.<br> Instead a managed type instance for <tt>java.io.Serializable</tt> is created which is obviously wrong. There should be no manage type instance for <tt>java.io.Serializable</tt> but only for <tt>MyEntityId</tt>.</p> </td>
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