Aspect-Oriented Programming and the AspectJ

210 Pages·2005·1.01 MB·English

Aspect-Oriented Programming
and the AspectJ
Tamás Kozsik
([email protected], http://kto.web.elte.hu/)
Dept. Programming Languages and Compilers
Eötvös Loránd University, Budapest (Hungary)
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 1
Contents
• Need for a novel paradigm
• Aspect-Oriented Software Development
– Aspect-Oriented Design
– Aspect-Oriented Programming
• AspectJ (language and tools)
• Other languages and tools
– Applications, examples
• Related technologies
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 2
Schedule
• Need for a novel paradigm
Separation of concerns
Aspect-Oriented Programming
• AspectJ
• Aspect-Oriented Software Development
Related technologies
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 3
Popular paradigms
• High-level languages (5*-6*)
• Structured programming (6*-7*)
• Modular programming (7*-8*)
• Object-oriented programming (8*-9*)
• Component-oriented programming (9*-0*)
?
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 4
Further important paradigms
• Declarative programming
(e.g. functional, logic)
• Generic programming
• Metaprogramming
• Application of design patterns
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 5
Nowadays
• Aspect-Oriented Programming
• Generative programming
• Intentional programming
• Multi-paradigm programming
• Service-oriented programming
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 6
Managing complexity
• Driving force
– Methodologies
– Programming languages
• Abstraction and modularity
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 7
Increase reusability
• Nice dream
• Only partially achieved
• Modularity and abstraction
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 8
Paradigm Abstraction Modularization
High-level
machine independence instruction
languages
Structured
control flow control structure
programming
Procedural
computations procedure
programming
Modular
libraries, data types module
programming
Object-oriented
data types class/object
programming
Component-O.
scenarios component
programming
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 9
Modularity
• Methodology
– decomposition
– hierarchy
– cohesion within components
– narrow interface between components
• Language
– encapsulation, information hiding
– subprograms, classes, packages
– compilation units, libraries
April 11-15. 2005. Aspect-Oriented Programming and the AspectJ (Tamás Kozsik) 10