public Money getSubtotal() { ... } }
SalesLineItem
quantity : Integer
*
getSubtotal() : Money
Described-by
ProductSpecification
description : Text price : Money 1 itemID : ItemID
}
Sale- makeLineItem〔〕
{ lineItems.add( new SalesLineItem(spec, qty) );
}
enterItem(id, qty)
:Register
2: makeLineItem(spec, qty) 2.2: add(sl)
:Sale 2.1: create(spec, qty)
};
UPC is used as key
Order of Implementation
7
Store
U se s
1 address : Address 1 name : Text
addSale(...)
1
3
Pr o du ctC a talog
1
Looks-in
public Register(ProductCatalog pc) {...}
public void endSale() {...} public void enterItem(ItemID id, int qty) {...} public void makeNewSale() {...} public void makePayment(Money cashTendered) {...} }
