Can I implement this as this?
Leave Address as a interface.
Class ToAddress--- mapped to address with type='t'
class CCAddress---mapped to Address with type='c'
Then in Class has two sets
toaddr---- mapped to a list of ToAddress
ccaddr----mapped to a list of CCAddress
Althought I did not try, but it should work.
jason
--- [EMAIL PROTECTED] wrote:
>
> Nup, it's not allowed currently. It would probably
> be pretty trivial to
> support in the same way we support the order-by
> attribute ... simply have a
> where attribute of a collection mapping. If you want
> to try implementing
> that, please feel welcome since many people have
> asked for this. Currently
> each collection requires its own foreign key column.
>
> I am not so keen on this kind of model, actually.
>
>
>
>
>
>
> "Aapo Laakkonen"
>
>
> <[EMAIL PROTECTED]>
> To:
> <[EMAIL PROTECTED]>
>
> Sent by:
> cc:
>
>
> [EMAIL PROTECTED] Subject:
> [Hibernate] How to do this (assiciation)?
>
> eforge.net
>
>
>
>
>
>
>
>
> 13/02/03 02:16 AM
>
>
> Please respond to aapo.laakkonen
>
>
>
>
>
>
>
>
>
>
>
>
> Let's say I have a Message table:
> message (id, subject, content, toaddr, ccaddr)
>
> - id = long identifier
> - subject = text string
> - content = text string
> - toaddr = mapping to a address table with
> address.type='t'.
> - ccaddr = mapping to a address table with
> address.type='c'.
>
> Or it can be an integer or anything else... maybe an
> enumeration.
>
> And I have a table Address:
> address (id, message_id, email, type)
>
> - id = long identifier
> - message_id = long foreign key relation to message
> table
> - email = text string
> - type = type that identifies the type of this
> address field (to-address
> or cc-address).
>
> I'd like to to mapping so that my Message class
> looks something like
> this:
>
> public class AddressBean implements Serializable {
> private long id;
> private String subject;
> private String Content;
> private Set toaddr;
> private Set ccaddr;
> }
>
> - Each message has zero to many to-addresses.
> - Each message has zero to many cc-addresses.
> - Each address belongs to exactly one message.
>
> How do I write a mapping for that? Hibernate needs
> to somehow know that
> we are mapping toaddr set to address table that has
> a particular
> address.message_id and address.type.
>
>
> Kind Regards
> Aapo Laakkonen
>
>
>
>
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