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A new issue has been created in JIRA.
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http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-425
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Key: HB-425
Summary: Many-to-one With Join Table
Type: New Feature
Status: Unassigned
Priority: Minor
Project: Hibernate2
Components:
core
Assignee:
Reporter: Jesse Costello-Good
Created: Mon, 27 Oct 2003 7:06 AM
Updated: Mon, 27 Oct 2003 7:06 AM
Description:
http://forum.hibernate.org/viewtopic.php?p=2175822#2175822
I propose allowing a many-to-one/one-to-many relationship between two classes be implemented with a separate join table.
The join table would look like:
many_id int not null,
one_id int not null unique,
primary key (many_id, one_id)
This would be useful if for some reason you didn't want to change the many side table to include a FK to the one side (i.e. there are very many rows but very few relationships, so for space efficiency), you are migrating from a many-to-many relationship, or you plan to migrate eventually to a many-to-many relationship.
many-to-many is unsatisfactory for this situation because on the many side class I want only a simple pointer to the single related object; I don't want to deal with a collection.
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