Object Oriented Anlysis&Design

1. For the diagram shown below, answer the following questions:

a) In your words, explain the functionality of the system

b) Draw the equivalent sequence diagram

Note: numbers are not nested hierarchically; however, they are ordered sequentially.

: OrderEntry Window 1: prepare() : Order 5: needsReorder:= needsToReorder() aStock: StockLine 2: "{for all order lines); prepare ( ) 3: hasStock = check (1) aLine: Order Line 4: [hasStock] : remove() 7: [hasStock]: new ( ) 6: [needsRecorder]: new ( ) : Delivery Item : Regrder Item