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https://issues.apache.org/jira/browse/OPENJPA-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13786296#comment-13786296
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Reinis Vicups commented on OPENJPA-1607:
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Working with openjpa-2.3.0-SNAPSHOT and getting this error UNLESS
if I substitute @JoinColumn with
@org.apache.openjpa.persistence.jdbc.ElementJoinColumn this particular
exception goes away!
> Using unidirectional one-to-many target foreign key throws exception
> --------------------------------------------------------------------
>
> Key: OPENJPA-1607
> URL: https://issues.apache.org/jira/browse/OPENJPA-1607
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 2.0.0-beta3
> Reporter: Oliver Ringel
> Attachments: openjpa-1607.tar
>
>
> Using this simple unidirectional relationship
> @OneToMany
> @JoinColumn(name = "DEPARTMENT_ID")
> private Set<Employee> employees;
> causes to the following exception
> <openjpa-2.0.0-beta3-r422266:926797 fatal user error>
> org.apache.openjpa.persistence.ArgumentException: You have supplied columns
> for "com.example.Department.employees", but this mapping cannot have columns
> in this context.
> Unidirectional one-to-many target foreign key relationship should be
> supported in JPA 2.0.
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