Message:
The following issue has been closed.
Resolver: Max Rydahl Andersen
Date: Sat, 23 Aug 2003 3:18 PM
Feels good to nail this OLD feature request ;)
This is now fixed v21branch in CVS.
<subclass> and <joined-subclass> can now have an extends attribute that contains the fully qualified classname of its superclass.
NOTE: the superclass HAS TO BE defined BEFORE it is reference from extends. This means ordering of the hbm.xml files is now relevant!
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View the issue:
http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-229
Here is an overview of the issue:
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Key: HB-229
Summary: Joined-subclass definitions in separate .hbm.xml
Type: Improvement
Status: Closed
Priority: Major
Resolution: FIXED
Project: Hibernate2
Components:
core
Fix Fors:
2.1
Versions:
2.1 beta 1
Assignee:
Reporter: Duffy Gillman
Created: Mon, 4 Aug 2003 6:40 PM
Updated: Sat, 23 Aug 2003 3:18 PM
Environment: All
Description:
Currently all joined-subclass definitions must be contained in the hbm.xml file that defines the superclass. In application frameworks built on top of Hibernate, this could be very limiting. In order to allow someone to extend key framework classes, that person must currently edit the configuration files of the framework classes. It would be very useful to allow new subclasses to be defined in external hbm files.
A new "superclass" attribute could be created for the class element, along with a "inheritanceType=joined|determinant". When a new hbm file is processed by a DataStore the superclass attribute could be examined and the new class could be treated as a subclass or joined-subclass based on the inheritanceType attribute. This would place a constraint on the order in which resources are added to the DataStore. The superclass will need to be added first, or there will have to be a check for completeness of mapping definitions at the point when a SessionFactory is created.
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