iAnywhere Water System User Manual

Defining classes

Class properties

A class has the following general properties:

Property Description

Maximum

length

Name Name of the class 254

Code Reference name for the class 254

Comment Descriptive comment for the class —

Stereotype Subclassification of a class derived from an existing

one. Extends the semantics of a class without

changing it's structure

—

Type Set of instances that share the same operations,

abstract attributes, and relationships, and semantics

—

Visibility Visibility of the class, whose value denotes how it

may be seen and used by other objects

—

Cardinality Specific number of instances that the class can have —

Persistence Lifetime of the instances of a class. An object can be

persistent or transient. If it is persistent, it continues

to exist after the process that created it has ceased to

exist. If it is transient, then it ceases to exist when

the process that created it ceases to exist

—

Abstract Indicates that the class cannot be instantiated and

therefore has no direct instances

—

Final Specifies that the class cannot have any inherited

objects

—

Generate Indicates that the class will be automatically

included among the objects generated from the

model when you launch the generation process

—

A class definition also includes the following properties, which are defined

on associated property sheets:

Property Description

Attribute Defines the characteristics of a class

Operation Carries out a service that effects behavior

Rule A business rule that your business follows. Business rules guide and

document the creation of a model