Jim Crossley wrote:
Hi Jim...
Jim Clayson <[EMAIL PROTECTED]> writes:
I have a one to many relationship between 2 entity beans:
User 1:N Car
The relationship is unidirectional ie User has a Set of Cars and a Car
has no ref to its User.
The question is when I create a car, how do I update the list of cars
a user has?
Assuming you're using xdoclet, you'll define abstract methods for your
car collection on UserBean that look something like this:
/**
* @ejb:relation name="User-Cars"
* role-name="User-has-many-Cars"
* target-role-name="Car-belongs-to-User"
* target-ejb="Car"
* target-cascade-delete="yes"
* @jboss:auto-key-fields
*/
public abstract Set getCars();
public abstract void setCars(Set v);
You can create an add method to update the user's list of cars.
/**
* @ejb:interface-method
*/
public void addCar (CarLocal car)
{
try {
this.getCars().add (car);
} catch (Exception e) {
throw new EJBException (e);
}
}
Make sense?
-- Jim
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Yep,
Thanks for that.
I'm not actually using Xdoclet but I might just have a look at it.
Jim
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