Re: [JBoss-user] Primary Key inheritance problem

[Dain S. <da...@da...>]

> Here is hashCode function (the same in UserPK and ResourceOwnerPK):
> public int hashCode() {
>   if( _hashCode == Integer.MIN_VALUE )
>     _hashCode += this.username.hashCode(); // line 59
>   return _hashCode;
> }


this.username is null.  Do you have this field in both classes, so you 
have a shadowed field.  By the way, this is a dangerous hash function as 
when the pk is serialized the hashCode will be reset to 0 not 
Integer.MIN_VALUE assuming it is marked a transient.

Also check that you implemented equals correctly.  You must check for an 
exact type match first.

-dain

-- 
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Dain Sundstrom
Chief Architect, JBossCMP
JBoss Group, LLC
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