Connie's Convenience Store - About Peter Coad

84 Connie’s Convenience Store Establishing System-Interaction Responsibilities
Add both objects to your model (Figure 1–58):
Figure 1–58: Objects for an interacting system.
A collection of authorization systems
What if you want to work with many authorization systems, using the least expensive
one first, then others on an as-needed basis? That’s responsibility across a collection of
authorization systems.
#23. “Select a Collection” Strategy selecting objects (pattern players)
• What if you need a collection of objects, yet such a collection has no special name?
Add a collection, using a plural form of the worker name. Example: authorization
systems.
Add a collection, using the worker name, followed by the word “collection” or “server.”
Example: authorization server.
You need a collection of authorization systems. You could call it:
– authorization system collection
– authorization systems
– authorization server.
Go ahead and use “authorization server.” It sounds cool.
Establish responsibility: “what I know.”
Nothing is needed here.
AuthorizationSystem
operationalState
address
vendorNumber
type
cost
authorizationSystemSI
getAuthorization
AuthorizationSystemSI
address
connect
logon
query
logoff
disconnect