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Defining classes
18
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