Marina Vatkina wrote:
Greg Ederer
wrote:
Marina Vatkina wrote:
Marina Vatkina wrote:
Hi Greg,
Does it mean that there is no relationship from Offering to Item?
Is it worth adding (and maintaining so that they are always at sync)?
I meant to add the relationship on the other side ;)
Sorry, I misunderstood.
Since I do not have a unique Offering instance per ShoppingCartItem,
You do or you don't?
I do not.
Offering cannot have a ShoppingCartItem
property. Currently, ShoppingCartItem has:
@OneToOne(optional=false)
private Offering offering;
And I have nothing specified at the Offering end. Is there a better
way to model this?
If it's OneToOne, can you add a ShoppingCartItem property to the
Offering?
What would be wrong about it? If you do, you just do
getItems().remove(offering.getItem())
offering.setItem(null);
Is it possible to have a OneToOne relationship that is backed by a join
table so that I would not have to have a separate row in my offering
table for each Item that has a reference to a particular Offering? I'm
looking at Oracle's JPA Annotation Reference, and I don't see a way to
do this. Can a bidirectional OneToOne have an associated JoinTable?
(I hope I'm asking the right question here.)
Thanks!
Greg
thanks,
-marina
Thanks!
Greg
-marina
thanks,
-marina
Greg Ederer wrote:
Hi,
I have a method that removes a persistent object from a collection
based on a property of the object being removed, like so:
/**
* Removes all ShoppingCartItems containing this
* offering
*/
public void removeItem(Offering offering)
{
List<ShoppingCartItem> iList = new
ArrayList<ShoppingCartItem>(getItems());
for(ShoppingCartItem i : iList)
{
if(i.getOffering().equals(offering))
{
getItems().remove(i);
}
}
}
Is this the best way to do this?
Cheers,
Greg
p.s.: I'm so glad I found this list. I feel like I've been groping in
the dark with JPA. Thanks for all the help! --G
--
| E R G O N O S I S
| Greg Ederer
| Lead Developer
| greg@ergonosis.com
| 360.379.1157
| | OpenDocument - OK <http://openoffice.org/>
|
--
| E R G O N O S I S
| Greg Ederer
| Lead Developer
| greg@ergonosis.com
| 360.379.1157
| | OpenDocument - OK <http://openoffice.org/>
|