[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4479) We should be able to implement Joins using formulas with Annotations
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http://opensource.atlassian.com/projects/hibernate/browse/HHH-4479?page=c...
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Emmanuel Bernard commented on HHH-4479:
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My concern with the named reference approach is that it does not work if the reference is
not a column but another formula. In your example, what if is_personalized is not
materialized as a column but simply a hardcoded formula in the mapping?
So we would still need the @JCoF container for that approach. That being said, I agree
that it's a bit ugly. We can see if your approach can be supported as well without
disrupting too much the codebase.
Do you want to have a look?
We should be able to implement Joins using formulas with Annotations
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Key: HHH-4479
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4479
Project: Hibernate Core
Issue Type: New Feature
Components: annotations
Reporter: Sharath Reddy
Assignee: Sharath Reddy
Priority: Minor
Fix For: 3.5
Attachments: HHH-4479.patch, HHH-4479second.patch
This article published on the O'Reilly web site -
http://onjava.com/pub/a/onjava/2005/08/03/hibernate.html?page=3 - describes how to
implement joins with formulas, using the hbm xml files. We should be able to do the same
with annotations:
<hibernate-mapping>
<class name="Company" table="Company">
<id name="id" />
<many-to-one
name="defaultContactPerson"
property-ref="defaultContactPerson">
<column name="id"/>
<formula>1</formula>
</many-to-one>
</class>
<class name="Person" >
<id name="id" />
<properties name="defaultContactPerson">
<property name="companyID" />
<property name="defaultFlag" />
</properties>
</class>
</hibernate-mapping>
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