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Posted to dev@openjpa.apache.org by "Donald Woods (JIRA)" <ji...@apache.org> on 2010/09/20 14:32:32 UTC
[jira] Updated: (OPENJPA-1541) Support Enum as Primary Key Type
[ https://issues.apache.org/jira/browse/OPENJPA-1541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Donald Woods updated OPENJPA-1541:
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Component/s: competitive
> Support Enum as Primary Key Type
> --------------------------------
>
> Key: OPENJPA-1541
> URL: https://issues.apache.org/jira/browse/OPENJPA-1541
> Project: OpenJPA
> Issue Type: New Feature
> Components: competitive, jpa
> Affects Versions: 2.0.0-beta
> Environment: All
> Reporter: bernard
> Priority: Critical
>
> Enums work as primary keys in TopLink and EclipseLink. DataNucleus supports them, too:
> http://www.datanucleus.org/products/accessplatform/jpa/primary_key.html
> It would be good to also include this in the specification because, not to support type safety in primary keys is fairly sad.
> Enum is a basic language feature, and most applications would enjoy significant benefits by mapping the keys of those little system behavior controlling lookup tables to enums.
> Consider a payment_type table. One can only generate the IDs of the table and use them for switching safely when the ids are mapped to enums. Any such application would typically have a PaymentType enum anyway.
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