Design Patterns
PV167 Project in Object-oriented
Design of Information Systems
B. Bühnová 1
Design Patterns
 Design Patterns: Elements of Reusable ObjectOriented
Software
by E. Gamma, R. Helm, R. Johnson, J. Vlissides, 1994
 Pattern catalog:
 Creational patterns – 5 patterns
 Structural patterns – 7 patterns
 Behavioral patterns – 11 patterns
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Design Patterns
Part 1/2
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Most popular patterns
 Creational patterns
 Singleton
 Structural patterns
 Adapter
 Bridge
 Composite
 Behavioral patterns
 Observer
 Strategy
4
Creational – Singleton
5
Structural – Adapter pattern
6
Structural – Bridge pattern
7
Structural – Composite pattern
8
Behavioral – Observer pattern
9
Behavioral – Strategy pattern
10
Design Patterns
Part 2/2
B. Bühnová 11
Other popular patterns
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 Creational patterns
 Abstract Factory
 Structural patterns
 Façade
 Flyweight
 Behavioral patterns
 Mediator
 Memento
 State
 Visitor
Creational – Abstract Factory pattern
13
Structural – Façade pattern
14
Structural – Flyweight pattern
15
Behavioral – Mediator pattern
16
Behavioral – Memento pattern
17
Behavioral – State pattern
18
Behavioral – Visitor pattern
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