[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2638) SchemaUpdate asks for all referenced mapping documents when updating a single table

[Max Rydahl Andersen (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_27069 ] 

Max Rydahl Andersen commented on HHH-2638:
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the mapping files that is reachable will have to be supplied since they can/would have backrefs/influences on the related tables too.

what you can add is simply some filter to say only do updates for specific tables.

> SchemaUpdate asks for all referenced mapping documents when updating a single table
> -----------------------------------------------------------------------------------
>
>                 Key: HHH-2638
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2638
>             Project: Hibernate3
>          Issue Type: Improvement
>    Affects Versions: 3.2.0 cr1
>         Environment: myql, 
>            Reporter: bhomass
>
> I believe the idea of doing schema update is so that you can update a single table with a single property. However, as I try this feature out, hibernate continues to throw exception because this table I want to update refers to an unmapped class. I can move to the next step by adding another map file, but then more and more unmapped classes get involved, and pretty soon, I am feeding the entire collection of map files. So that's no different from updating the entire database.
> I think it should be possible automatically read out the existing schema of the referenced tables from the database, so that their mapping files don't need to be supplied to SchemaUpdate, and these referenced tables do not inadvertently get updated too (with no net effect of course). 

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