Hi there,
I'm wondering how the scenario below can be mapped through NH. It's a legacy
entity structure.
public class Customer
{
public Address HomeAddress {get;set;}
public Address WorkAddress {get; set;}
public Address BillingAddress {get;set;}
}
Unfortunately, it's also mapped to legacy database structure, where we have
an associative table:
create table CUSTOMERS_ADDRESSES
(
customer_id int,
address_id int,
address_type varchar(10)
)
Where address_type holds 'HOME' or 'WORK' or 'BILLING'.
I.e., for clarity, home-address is populated with this query:
select * from ADDRESSES where address_id in (select address_id from
CUSTOMERS_ADDRESSES where customer_id=? and address_type = 'HOME'
How do we map this association in nhibernate mapping?
And my real concern is about lazyload and nulls. Each of the addresses is
optional and may therefore be null. And if we're to use lazy-load, they can
never be null (instead, a proxy instance, which i suspect will throw
ObjectNotFoundException when the actual loading kicks in).
Any advice?
Thanks
Hendry
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