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From "Marc Logemann (JIRA)" <>
Subject [jira] [Commented] (OPENJPA-1541) Support Enum as Primary Key Type
Date Sun, 11 Nov 2012 11:13:12 GMT


Marc Logemann commented on OPENJPA-1541:

I am still missing this feature heavily. Especially for Configuration Tables this would be
really nice. Otherwise people continue to use static Strings as keys. old-school.
> Support Enum as Primary Key Type
> --------------------------------
>                 Key: OPENJPA-1541
>                 URL:
>             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:
> 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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