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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?atlOrigin=eyJpIjoiNThlN2ViZmVjNzhiNDJmN2E5Y2E5NzdjZjJiYTMzZTMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-13353?atlOrigin=eyJpIjoiNThlN2ViZmVjNzhiNDJmN2E5Y2E5NzdjZjJiYTMzZTMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-62f39da3-023b-4d31-8aa9-8cd7b5156798" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-13353?atlOrigin=eyJpIjoiNThlN2ViZmVjNzhiNDJmN2E5Y2E5NzdjZjJiYTMzZTMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HHH-13353</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-13353?atlOrigin=eyJpIjoiNThlN2ViZmVjNzhiNDJmN2E5Y2E5NzdjZjJiYTMzZTMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">NPE when specifying a member of a composite primary key as a name in the annotation @MapKey</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-62f39da3-023b-4d31-8aa9-8cd7b5156798" 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"> 5.2.18 </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_TestCase.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">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 03/Apr/2019 18:32 PM </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="khaled" style="color:#6c797f;; color: #3b73af; text-decoration: none" id="email_khaled" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A48fc30ad-c7a9-4167-8f9e-5208580d27e6"> BEN AHMED </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">We have an entity BlocRecord with InheritanceType.JOINED having a composite primary key BlocRecordId </p>
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<b>BlocRecordId.java</b>
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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">
@Column(name = <span class="code-quote" style="color: #009100">"source_"</span>)
<span class="code-object" style="color: #910091">String</span> source ;
@Column(name = <span class="code-quote" style="color: #009100">"messageType_"</span>)
<span class="code-object" style="color: #910091">String</span> messageType ;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">We have an entity FlowIn and we have a relation Map OneToMany from FlowIn to BlocRecord</p>
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@OneToMany(targetEntity = BlocRecord.class, cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = <span class="code-quote" style="color: #009100">"flowIn"</span>, orphanRemoval = <span class="code-keyword" style="color: #000091">true</span>)
@MapKey(name = <span class="code-quote" style="color: #009100">"blocRecordId.messageType"</span>)
<span class="code-keyword" style="color: #000091">private</span> Map<java.lang.<span class="code-object" style="color: #910091">String</span>, BlocRecord> blocRecord = <span class="code-keyword" style="color: #000091">new</span> java.util.HashMap<>();
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">As the inheritanceType is JOINED, the system will try to fetch the PersistentClass of the key speicified in the annotation @KeyName by invoking the following code </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">
Property mapProperty = BinderHelper.findPropertyByName( associatedClass, mapKeyPropertyName );
PersistentClass targetPropertyPersistentClass = InheritanceType.JOINED.equals( inheritanceState.getType() ) ?
mapProperty.getPersistentClass() : associatedClass;
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">mapProperty.getPersistentClass() returns null because the field id defined in an embedded class ==> The following exception is thrown :</p>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">java.lang.NullPointerException<br> at org.hibernate.cfg.annotations.MapBinder.createFormulatedValue(MapBinder.java:448)<br> at org.hibernate.cfg.annotations.MapBinder.bindKeyFromAssociationTable(MapBinder.java:181)<br> at org.hibernate.cfg.annotations.MapBinder.access$000(MapBinder.java:66)<br> at org.hibernate.cfg.annotations.MapBinder$1.secondPass(MapBinder.java:101)<br> at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:54)<br> at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1635)<br> at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1603)<br> at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:278)<br> at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)<br> at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)<br> at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)<br> at org.hibernate.boot.MetadataSources.buildMetadata(MetadataSources.java:179)<br> at net.codejava.hibernate.Main.main(Main.java:15)</p>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">We didn't have this issue with Hibernate 5.1.14<br> A shortly test case is attached (please execute the class Main) </p> </td>
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