Re: [eclipselink-users] ManyToMany with aditional fields

[christopher delahunt <christopher.delahunt@xxxxxxxxxx>]

Sorry, didn't realize the links where to your classes and not to a 
signature. 

It looks  like you put the relationships in your PKClass and just used 
basic types in your ItemOrder class, which is backwards.
The specification does not allow primary key classes to contain 
relationships - they can only contain basic types. 

Because you are using an embeddable, you do not need to map anything 
other than the quantity in your ItemOrder, and just use itemOrder.id.orderId
to get at the integer values.  If you want to have the relationships, 
you can add Order and Item ManyToOne mappings to the ItemOrder but be 
sure to mark the columns as insertable=false updatable=false so
that you only have one writable mapping to the column.  If you are using 
the latest EclipseLink which implements the @MappedById, you can instead 
use it to point to the corresponding id mapping in the embeddable
(avoiding having to define the join column name and mark it as 
insertable=false updatable=false). 

Best Regards,
Chris


John Arevalo wrote:
> Hi, thank you for your quick reply.
>
> ItemOrderPK is posted in 1st pastebin link. Full JoinColumn Annotation is:
> @JoinColumn(name="item_id",referencedColumnName="item_id")
> @ManyToOne
> private Item item;
>
> --
> John Arévalo
> GNU/Linux User #443701
> http://counter.li.org/
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