About question b).
I think the first option is more correct in OO approach.
But, in practice, you must use the first one in a high level
specification.
In low level, it's depend on: i) if you put all those classes in the same
component you can use the first one too,
but ii) if you put them in different components, it is a good practice to
use the second one.
Régis Patrick S. Simão.
Tian WeiJun <[EMAIL PROTECTED]>@rational.com em 09/04/2001 22:26:34
Favor responder para Tian WeiJun <[EMAIL PROTECTED]>
Enviado Por: [EMAIL PROTECTED]
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Para: rose forum <[EMAIL PROTECTED]>
cc:
Assunto: (ROSE) question about OOAD
Hi
a>
would anyone recommand one or several good books about object-oriented
analyis and design? both in theoretic and practice?
b>
and I have one question:
in our system, there are classes: Order, OrderItem, Product.
one Order has 1 to many OrderItems, each OrderItem has relationship to One
Product.
there are two method to model them:
1) Order: int orderID,Date orderDate, Collection items
OrderItem: int lineNo, int qty, double price, Product product
Product: Int productID, String name, String UOM
2) Order: int orderID,Date orderDate
OrderItem: int orderID, int lineNo, int qty, double price, int productID
Product: Int productID, String name, String UOM
which one is more OO?
c>
are there any theory in OOAD about how to model these kind of relationship?
are there any theory in OOAD just like normalization in RDBMS design?
thanks
Tian WeiJun
[EMAIL PROTECTED]
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