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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