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Paul Benedict commented on HHH-2060:
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I totally concur that allowing generators for a composite key is an important feature.
This issue now has 7 votes. Let's get this into Hibernate 3.3
To be able to use <generator> with <composite-id>
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Key: HHH-2060
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2060
Project: Hibernate3
Issue Type: Improvement
Affects Versions: 3.2.0.cr4
Environment: Hibernate 3.x
Reporter: Xavier Brénuchon
Attachments: hibernate.core.trunk.core.patch,
hibernate.core.trunk.testsuite.patch
Hello,
This is the continuation of HB-389
We develop an application which has very strong need for performance with several tens of
million recordings. Partitioning is a need.
So for that, I use <composite-id>. But my primary key is not a natural key, but a
real technical key :
- column of partitioning for optimization of the data base
- column of technical id
So I need to have a generator, for exemple :
<composite-id name="id" class="IdPartition">
<key-property name="org" type="string"
column="ORG"/>
<key-property name="id" type="long"
column="ID"/>
<generator class="fr.test.xavier.IdPartitionGenerator">
<param name="table">TAB_SEQ</param>
<param name="column">LAST</param>
</generator>
</composite-id>
The good news is that Hibernate can use that (HB-389).
In fact, it is enough to modify the DTD to authorize <generator> in
<composite-id> and it is all. The current code of Hibernate manages it very well.
Is it possible that Hibernate is enriched by this functionality?
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