Re: [eclipselink-users] JPA 2 @OrderColumn question

[Guy Pelletier <guy.pelletier@xxxxxxxxxx>]

Hi Noah,

Yes, the use of an OrderColumn is currently intended to be used with a List only. You can however use the JPA OrderBy annotation instead which can be used with a Set.

Cheers,
Guy

On 06/06/2012 5:52 PM, Noah White wrote:

I was reading over the docs [1] regarding Eclipselink's support for @OrderColumn. It looks like this only applies to List and not Set. The reason I ask is because I have a ManyToMany bi-directional relationship (using a join table) which is a Set and is implemented with a HashSet because the collection can't have duplicates.  

I wanted to order the entries in this set using @OrderColumn, but it appears I can only apply this to List, however using List will break my unique requirement.  Is this understanding correct?

If so what is the recommended strategy for this case?

Thanks,

-Noah

[1] - http://wiki.eclipse.org/EclipseLink/Examples/JPA/2.0/OrderColumns

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Guy Pelletier

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