华师大面向对象程序设计-Lec11_设计类图及顺序图22.ppt

* Use Case Realizations for the NextGen Iteration 5.3. Store.create() identify the following initialization work Create a Store, Register, ProductCatalog, and ProductDescriptions. Associate the ProductCatalog with ProductDescriptions. Associate Store with ProductCatalog. Associate Store with Register. Associate Register with ProductCatalog * POS: StartUp * Use Case Realizations for the Monopoly Iteration Figure 18.21. Iteration-1 Domain Model for Monopoly System Operation playGame * Use Case Realizations for the Monopoly Iteration 6.1 Choosing the Controller Class Represents the overall system, root object, a specialized device, or a major subsystem. MonopolyGame a kind of root object: We think of most of the other domain objects as contained within the MonopolyGame. Abbreviated MGame in most of the UML sketches. MonopolyGameSystem a name suggesting the overall system Represents a receiver or handler of all system events of a use case scenario. PlayMonopolyGameHandler constructed from the pattern use-case-name Handler PlayMonopolyGameSession We select MonopolyGame (abv. MGame) * 6.2 Who is Responsible for Controlling the Game Loop? Turn: a player rolling the dice and moving the piece Round: all the players taking one turn What information is needed for the responsibility? Figure 18.22. Applying Controller to the playGame system operation * */54 Use Case Realizations for the Monopoly Iteration Information Needed Who Has the Information? the current round count(当前回合数) No object has it yet, but by LRG, assigning this to the MonopolyGame object is justifiable. all the players (so that each can be used in taking a turn) Taking inspiration from the domain model, MonopolyGame is a good candidate. MonopolyGame is a good candidate * Use Case Realizations for the Monopoly Iteration 6.3 Who Takes a Turn? What information is needed for the responsibility? Information Needed Who Has the Information? current location of the player (to know the starting p