RE: [Hibernate] Multiple Collections of Same Entity?

[Snively, Paul (SMCI)]

Title: RE: [Hibernate] Multiple Collections of Same Entity?

Hi Les!

 

The sets can definitely contain the same elements; in fact, "bars" is a proper subset of "otherBars."

 

Thanks for the help!

Paul

-----Original Message-----
From: Les Hazlewood [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 18, 2003 4:39 AM
To: Snively, Paul (SMCI); [EMAIL PROTECTED]
Cc: Beckman, Sam; Venegas, Frank; Wu, Feng
Subject: RE: [Hibernate] Multiple Collections of Same Entity?

Can a Bar in the "bars" set also be in the "otherBars" set?  Or are the sets mutually exclusive?

Les

> -----Original Message-----
> From: Snively, Paul (SMCI) [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, September 16, 2003 7:18 PM
> To: [EMAIL PROTECTED]
> Cc: Beckman, Sam; Venegas, Frank; Wu, Feng
> Subject: [Hibernate] Multiple Collections of Same Entity?
>
>
> Folks,
>
> We're pondering an entity class that has two collections,
> both of which we'd like to contain instances of some other
> entity class:
>
> class Foo
> {
>   Integer id;
>   private Set bars;            // Association to class Bar
>   private Set otherBars;    // Association to class Bar
> }
>
> From the documentation, it would seem that I would need two
> foreign key columns in Bar: one for each Set. First of all,
> is this correct, and secondly, are there any risks to this
> that I'm overlooking? I should add that I can assume that Bar
> is a lifecycle object of Foo, if that helps.
>
> Many thanks and best regards,
> Paul Snively
>
>
>
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