[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2060) To be able to use <generator> with <composite-id>
Jacob Robertson (JIRA)
noreply at atlassian.com
Fri Aug 17 13:25:13 EDT 2007
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_27880 ]
Jacob Robertson commented on HHH-2060:
--------------------------------------
@Steve
I submitted my last comment while you were posting the previous comment, and hadn't read it yet, so my comment was 2 minutes out of date. I understand where you're coming from - the DTD won't be changed until a true test is written. I get that. And I noticed the History Change to that effect as well. No need to pound that point in further.
> To be able to use <generator> with <composite-id>
> -------------------------------------------------
>
> 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
>
> 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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