| Re: [eclipselink-users] Generic Relationship |
This should work, as long as you define the OneToMany correctly,
i.e.
@OneToMany
protected List<ClassA> myInstances;
or if you want a OneToOne
@OneToOne
protected ClassA myInstance;
What error are you getting?
In general using TABLE_PER_CLASS with relationships is not a good idea.
Normally using SINGLE_TABLE or JOINED is better.
Charles Bedon wrote:
>
> Hello
>
> I'm really new to JPA, and I'm using EclipselLink as PP, but as I'm a bit
> short of time I haven't been able to dig into the documentation deep
> enough. I have these entity classes:
>
> public abstract class ClassA{...}
>
>
> public class ClassA_1 extends ClassA{...}
>
>
> public class ClassA_2 extends ClassA{...}
>
>
> And I'd like another entity class something doing this, in order to be
> able to reference an instance of ClassA_1 or ClassA_2:
>
>
> public class ClassB{
> ....
>
>
> @OneToMany
> protected ClassA myInstance;
>
>
> ...
> }
>
>
> Is this possible? I'm currently using an awful workaround involving an
> "adapter" as a wildcard for this relationship. I'm using a table per class
> strategy. Thanks for your input!
>
>
>
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