A little bit of UML Csaba Veres. UML A de facto standard for OO analysis and design Many components...
-
Upload
abraham-harrington -
Category
Documents
-
view
218 -
download
0
Transcript of A little bit of UML Csaba Veres. UML A de facto standard for OO analysis and design Many components...
A little bit of UML
Csaba Veres
UML
A de facto standard for OO analysis and design
Many components class diagrams use cases interaction diagrams ...
Perspectives Conceptual model (analysis)
language independent often no direct mapping from concepts to
classes Specification (design)
interface, not implementation types rather than classes a type can have many implementations as classes
Implementation classes, methods, etc.
Associations a conceptual relationship between classes
an Order comes from a single Customer and one Customer can make several Orders
a specification of responsibility a Customer knows about its Orders
an implementation of pointers or some sort of reference class Customer {
private Vector _orders;
Detail
Concept model: multiplicity Implementation model:
navigability
Multiplicity (cardinality)
Navigability
<<Stereotypes>> a high-level classification of the ”sort
of” object an object is controller interface
suggests certain general responsibilities can be used to extend basic UML
semantics can stereotype classes, relationships,
etc.
Multiple classification an object may be described by several
types not necessarily connected by inheritance i.e. multiple classification multiple
inheritance mi states that an object must have a single
type (with several supertypes) mc states that an object could be defined
as one of several types, depending on the purpose
Multiple classification (2)
Legal objects: (Female,Patient,Nurse) (Male,Physiotherapist) (Female,Doctor,Surgeon)
Illegal objects (Patient,Doctor) (Male,Doctor,Nurse)
Dynamic classification
Aggregation and composition
person
male
female
gender {}
Person
Male
Femalesex{complete}
Gender
type{complete}
must be male or female Gender
p e rs o n
g e n d e r
{}partition
Person Gender<<partition>>