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https://issues.apache.org/jira/browse/OPENJPA-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13716596#comment-13716596
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Kevin Sutter commented on OPENJPA-1607:
---------------------------------------
Unfortunately, this still seems to be an issue. I just talked with a customer
that is experiencing the same type of ArgumentException when using the
@JoinColumn with a @OneToMany. They are using a 2.0 persistence.xml and they
have the related entities defined in <class> elements in their persistence.xml.
Since we do have testcases that supposedly test this condition, there must be
some other aspect of the scenario that is alluding us. I have not been able to
reproduce the issue myself with a junit, but I have seen the output from this
customer's system.
They have a simple mapping like this:
@Entity
@Table(name="xbo")
public class Company implements CodedEntity, Presentable {
@OneToMany(fetch = FetchType.LAZY)
@JoinColumn(name="bol", referencedColumnName="bol")
private List<CompanyText> texts;
And, the resulting stacktrace is similar to what's been reported here and in
openjpa-1253:
Exception in thread "main" <openjpa-2.2.1-r422266:1396819 fatal user error>
org.apache.openjpa.persistence.ArgumentException: You have supplied columns for
"mycom.domain.Company.companyTexts", but this mapping cannot have columns in
this context.
at
org.apache.openjpa.jdbc.meta.MappingInfo.assertNoSchemaComponents(MappingInfo.java:382)
:
This seems to be a real issue that needs resolution.
> 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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