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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-7668?atlOrigin=eyJpIjoiMWEyNGI4ZDRiZTE2NDUyMmI2MmZhNDIzMDliM2I2ZWEiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Re: Wrong binding of @ManyToOne for non-PK associations</a> </span> </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: 10px 0 0; margin-top: 0">Found I have the same issue but in a @OneToMany that references an element in a unique key.</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">@Entity
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>Example {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
<span class="code-keyword" style="color: #000091">private</span> UUID id;
@Column(name = <span class="code-quote" style="color: #009100">"unique_key_a"</span>)
<span class="code-keyword" style="color: #000091">private</span> UUID keyA;
...
@OneToMany(fatch = FetchType.EAGER)
@JoinColumn(name = <span class="code-quote" style="color: #009100">"unique_key_a"</span>, referencedColumnName = <span class="code-quote" style="color: #009100">"unique_key_a"</span>)
<span class="code-keyword" style="color: #000091">private</span> Set<Other> otherExamples;
...
}</pre>
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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">java.lang.ClassCastException: demo.example.fake.entities.Example cannot be <span class="code-keyword" style="color: #000091">cast</span> to java.io.Serializable
at org.hibernate.type.CollectionType.getKeyOfOwner(CollectionType.java:411)
at org.hibernate.engine.internal.Collections.processReachableCollection(Collections.java:165)
at org.hibernate.event.internal.FlushVisitor.processCollection(FlushVisitor.java:46)
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:104)
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:65)
at org.hibernate.event.internal.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:59)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:166)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1454)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:511)
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3283)
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2479)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:473)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:178)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:39)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:271)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:98)
... 69 common frames omitted
Wrapped by: javax.persistence.RollbackException: Error <span class="code-keyword" style="color: #000091">while</span> committing the transaction
at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:532)
... 68 common frames omitted</pre>
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