Association Vs Dependency

[Ajai]

Hi,


In cade's class diagram dependency is shown between Order and lineItem which would most likely be implemented as CMP-CMR relationship with Order EB having the below
public abstract Collection getLineItems()

e.g returning LineItem collection object from some method which is a dependency trait rather than an association trait(exihibited by presence of instance variable).Am I missing something?

With my understanding one example of association would be a SFSB if that is keeping some instance variables e.g userData which is used across multiple method invocations .

Can anybody validate my understanding.


Thanks.

[Dan Drillich]

Ajai,

You said:

In cade's class diagram dependency is shown between Order and lineItem which....

Are you sure about it? I'm looking at this diagram on page #169 (not sure about the book's version) and it shows a solid line between Order and LineItem, which denotes an association. Since there are no arrows on the sides it is a bidirectional association.

-- Dan

[Ajai]

Sorry Dan.

It should have been association.
I understand that there is ownership relationship between order and line item and thats why relationship is association but my doubt comes when we implement or code this relationship.


Thanks