04class

Introduction to Rational Rose 98i v 5.2Copyright 1993-1999 Rational Software, all rights reserved 1

Introduction to Rational Rose 98i

Module 4: Class Diagram


Objectives: Class Diagram

You will be able to: Create classes Add attributes and operations to classes Create stereotypes for classes Create packages Relocate classes Create class diagrams Create relationships


Classes in the Browser


Namespaces


Documenting Classes


Using the Class Specification - Stereotypes


Using the Class Specification - Attributes


Using the Class Specification - Operations


Attributes and Operations and the Browser


Attribute Visibility Options

NewClassPublic attributeProtected attributePrivate attribute

NewClass+ Public attribute# Protected attribute- Private attribute


Operation Visibility Options

NewClass

Public operation()Protected operation()Private operation()

NewClass

+ Public operation()# Protected operation()- Private operation()


Packages in the Browser


Moving Classes to Packages


What is a Class Diagram?

A class diagram is a view of the static structure of a system Models contain many class diagrams

Class diagrams contain: Packages, classes, interfaces, and

relationships Notation:

Package Name

Class NameInterface Name

<<Interface>>


The Main Class Diagram

The logical view initially contains one class diagram This diagram is called Main

The Main class diagram is typically a view of the high level packages in the logical view


Class Diagram Drawing Toolbar

Text

Attachment

Association Relationship

Association Attribute

Dependency Relationship

Inherits Relationship

Package

Selection Tool

Note

Class

Aggregation Relationship

Interface

Realizes Relationship


Main Class Diagram-Registration System


Main Diagram Business Services Package


Creating Classes on a Class Diagram


Class Name Completion


Creating Attributes via a Class Diagram


Creating Operations via a Class Diagram


Additional Class Diagrams

Additional class diagrams are added as needed

They show additional “views” of the packages and classes in the model

Examples: View of classes participating in a scenario View of the “private” classes in the package View of one or more classes and their

attributes and operations View of an inheritance hierarchy


Additional Class Diagram


Showing Stereotypes


Color


Displaying Attributes and Operations


Displaying the Operation Signature


Displaying Visibility


Relationships

Class diagrams may contain the following relationships: Association, aggregation, dependency, realize,

and inheritance Notation:

Association Aggregation Dependency

Inheritance Realize


Package Relationships


Class Relationships


Navigation

Unidirectional

Bi-directional


Associations / Aggregations in the Browser

Navigable

Not Navigable


Naming Associations


Role Names


Zero or more0..*

One or more1..*

Zero or one0..1

Specified range2..7

Exactly one1

Multiplicity Indicators

Each end of an association or aggregation contains a multiplicity indicator Indicates the number of objects participating in

the relationship


Multiplicity Indicators


Aggregation Indicators


Reflexive Relationships


Constraints


Qualifiers


Association Classes


Deleting

If a package, class, association, or aggregation is deleted from the Browser then it is deleted from the model

If a package, class, association, or aggregation is deleted from a Class Diagram, it is deleted from the diagram but still remains in the model


Exercise: Classes

Use the pictures on the following pages to create the packages, classes, and class diagrams for your model


Exercise: Classes in the Browser


Exercise: Documenting Classes


Exercise: Stereotypes


Exercise: Packages in the Browser


Exercise: Relocating Classes


Exercise: Creating Attributes


Exercise: Creating Operations


Exercise: The Main Class Diagram


Exercise: Package Main Class Diagram


Exercise: Additional Class Diagram


Exercise: Displaying Attributes/Operations


Exercise: Relationships


Exercise: Relationships


Exercise: Reflexive Relationships


Exercise: Role Names


Exercise: Multiplicity


Exercise: Constraints

Documents

04class