Re: [eclipselink-users] Crosstables and Composite Primary Keys

[bht@xxxxxxxxxxxxx]

You might want to check

https://bugs.eclipse.org/bugs/show_bug.cgi?id=325035

Regards,

Bernard

On Thu, 23 Sep 2010 16:06:27 +0200, you wrote:

>Hi,
>
>I've found a strange problem with EclipseLink 2.1.1. I've got two 
>classes, roles and actions, each action has a set of roles (and via 
>versa, mapped by the actions). In the db, this is a cross table 
>action_roles (role_id, action_id), where both fields toegether form the 
>primary key. Both ManyToMany relations are FetchType.LAZY, using 
>FetchType.EAGER is not an option (because of performance issues).
>
>Now when I try to add an action to a role, I always get an Duplicate Key 
>exception, as the action is already in the set. This should not be a 
>problem, as the equals() and hashcode() methods are both overwritten, so 
>that the role should not be twice inside the set (and it isn't, I checked).
>
>Another aspect of the problem is, that it seems to occur only since I 
>updated to 2.1.1, before the problem didn't occur and the code where is 
>happens hasn't change since then.
>
>Anyone has an idea what the reason could be? I will do some more tests 
>tomorrow, perhaps I'll find a more specific test case.
>
>Regard,
>
>Flo
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