> -----Original Message-----
> From: Dain Sundstrom [mailto:[EMAIL PROTECTED] 
> Sent: Wednesday, December 13, 2006 2:56 PM
> To: open-jpa-dev@incubator.apache.org
> Subject: Re: Are relation sets identity, pk or bean.equals() based?
> What I'm really asking is when OpenJPA loads a one-to-many field,  
> what kind of collection is injected into the bean?  Is it a 
> plain old  
> HashSet?  If not, what does the collection use to determine equality  
> between elements?

It's a dynamically-generated subtype of whatever type that you specify
in the field declaration. So, you need to have a no-args constructor and
the class can't be final.

If you declare the field to be an interface type and you don't
initialize the field to anything, I don't remember how we decide what
impl to use.

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