[hibernate-issues] [Hibernate-JIRA] Closed: (HBX-1034) Need a way to have a "native-if-not-assigned" IdentifierGenerator

[Max Rydahl Andersen (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HBX-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Max Rydahl Andersen closed HBX-1034.
------------------------------------

    Resolution: Rejected

Two things:

1) This is not for Hibernate Tools but Hibernate Core

2) This is exactly what custom id generators are for; putting it in as a default provided id generator would be bad since you cannot gurantee id overlap

3) have you looked at session.replicate() ?

4) you could put this on the wiki to share it with others.

> Need a way to have a "native-if-not-assigned" IdentifierGenerator
> -----------------------------------------------------------------
>
>                 Key: HBX-1034
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HBX-1034
>             Project: Hibernate Tools
>          Issue Type: New Feature
>            Reporter: Paul Shemansky
>         Attachments: hibernate-native-or-assigned-patch.diff
>
>   Original Estimate: 10 minutes
>  Remaining Estimate: 10 minutes
>
> NOTE: I believe I have explored every documented possibility in achieving the desired functionality.  If I have misused Hibernate, the forum, or Google, I humbly apologize and stand to be corrected.
> With that being said, I believe this may be desired:
> --------------------------------------------------------------------
> By setting the Hibernate configuration's primary key column to use a "native" implementation, Hibernate ALWAYS generates the entity's id when a save() is being called. There is no way to "override" the generated id.
> The attached patch creates an IdentityGenerator which allows a programmer to override the "generated" id, with an "assigned" id at runtime simply by setting the primary key property.
> The patch also changes the IdentifierGeneratorFactory to allow the short-name selection of the generator via a configuration file.
> Furthermore, the English documentation is patched to describe the generator, accordingly.
> Possibly related issues and reference material:
> The documentation does not seem to provide a solution for a native-if-not-assigned generator; you seem to only have one, or the other:
> http://www.hibernate.org/hib_docs/reference/en/html/mapping.html#mapping-declaration-id-generator
> A scenario which describes a typical use case that warrants the proposed new feature:
> http://forum.hibernate.org/viewtopic.php?t=982560&highlight=native+id+generator

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