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Posted to dev@openjpa.apache.org by "Oliver Ringel (JIRA)" <ji...@apache.org> on 2010/04/01 12:58:27 UTC
[jira] Created: (OPENJPA-1607) Using unidirectional one-to-many
target foreign key throws exception
Using unidirectional one-to-many target foreign key throws exception
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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
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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[jira] Updated: (OPENJPA-1607) Using unidirectional one-to-many
target foreign key throws exception
Posted by "Oliver Ringel (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Oliver Ringel updated OPENJPA-1607:
-----------------------------------
Attachment: openjpa-1607.tar
Here is the test case.
> 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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[jira] Commented: (OPENJPA-1607) Using unidirectional one-to-many
target foreign key throws exception
Posted by "Oliver Ringel (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852394#action_12852394 ]
Oliver Ringel commented on OPENJPA-1607:
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Hi Thomas,
sorry, but I have to disagree. Using a jointable ist default behaviour if you not use @JoinColumn,
but the JPA 2.0 spec also supports unidirectional one-to-many relationships without the need of jointables.
See section 11.1.21 JoinColumn Annotation of the JPA 2.0 spec.
The RI supports this kind of relationships.
> 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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[jira] Commented: (OPENJPA-1607) Using unidirectional one-to-many
target foreign key throws exception
Posted by "Thomas O Rowe (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852363#action_12852363 ]
Thomas O Rowe commented on OPENJPA-1607:
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I believe a join table is required, not a join column. The JPA 2.0 spec has an example in section 2.10.5.1 that illuminates further.
> 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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