air gourmet case study

8 April 2023 rpl ganjil 2005/rd5 1

Case Study: Air Gourmet

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Use-Case Diagram

Use-case model for making a reservation


Scenario: Making a Reservation


Use-Case Diagram

Use-case for returning and scanning a postcard


Scenario: Postcards


Class Modeling : Noun Extraction

Stage 1. Concise Problem DefinitionDefine product in single sentence

A computerized system is needed to provide information regarding the efficacy of a special meals program.


Class Modeling: Noun Extraction

Stage 2. Informal Strategy Incorporate constraints, express result

in a single paragraph Reports are to be generated to document

the efficacy of the special meals program. The reports concern meals loaded on flights, flights boarded by passengers, names and addresses of passengers, meal quality, and low-sodium meals.


Class Modeling: Noun Extraction

Stage 3. Formalize the Strategy Identify nouns in informal strategy. Use

nouns as candidate classes Nouns report, efficacy, program, percentage,

meal, flight, boarding, passenger, name, address, quality

efficacy, program, percentage, boarding, quality are abstract nouns — exclude (they may become attributes)

name, address are attributes of passenger Question: Should meal and flight be

classes?It is easier to add classes than to remove themCandidate classes: Report and Passenger


First Iteration of Class Diagram)Problems with this

class diagram Data for reports

are needed on a per-flight basis

Each report has to access multiple flights

Each flight has multiple passengers

Six reports (not four) are needed


Second Iteration of Class DiagramCause of our problemsFlight

should have been a candidate class


Dynamic Model (state

diagram)


Object-Oriented Design

OOD consists of four steps:1. Construct interaction diagrams for

each scenario2. Construct the detailed class diagram3. Design the product in terms of

clients of objects4. Proceed to the detailed design


Step 1. Interaction DiagramsExtended scenario for making a reservation


Step 1. Sequence

Diagram for making a

reservation


Step 1. Collaboration diagram for sending and returning a postcard


Step 2. Detailed

Class Diagram

(C++ version)


Step 2. Detailed

Class Diagram

(Java version)


Step 3. Client–Object

Relations (C++)


Step 3. Client–Object

Relations (Java)


Step 4. Detailed Design

The detailed design can be found inAppendix H (for implementation in C++)Appendix I (for implementation in Java)

air gourmet case study

Documents

rpl ganjil 2005 rd5

client object relations

detailed class diagram

special meals program

class modeling

version

case diagramuse

candidate classes