Order ShippingAddress OOAD question.

[John Whish]

Hi,

I'm hoping to bounce some thoughts off you guys if you don't mind.

I have an existing e-commerce site that has ShippingAddress and
BillingAddress classes which extend an Address (abstract) class.

My Basket object has a simple reference to each. The client now wants
to be able to offer collect from store (they have multiple stores).

My first thought is to have a StoreAddress object which extends
Address. I can then pass this StoreAddress in to the
Basket.setShippingAddress() method.

Does this sound like a good idea?

Thanks,

- John

[John Whish]

Thinking about this a bit further, I think that I've fallen into the
trap of using inheritance, when I should be thinking of the strategy
pattern.

Thoughts still welcome!

- John

[Kevin Roche]

Jon,
Yes, strategy pattern would be my suggestion.
Kevin

[John Whish]

Thanks Kevin,

That leads me on to the next question which is how you would store the
Address in the Basket. Would you just have an array of addresses in an
address instance variable or still have seperate instance variables in
the basket to store them in?

Thanks :)

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[Kevin Roche]

John,

How many adresses could there be?

If there is possibility of there being more then an array is a good choice. In fact I would most likely use an array anyway to make processing easier.

Kevin

[Judith Barnett]

Sounds workable if you only have one address for each store with a
pointer from the customer to the store they want to pick up from. I
wouldn't have a store address for each customer the way you have
billing and shipping.

[Judith Barnett]

Correction - a pointer from the basket (or order) to the store,
because it could change with each order.