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Aspect Oriented Software Development

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Jignesh Patel
Jignesh Patel

Aspect-Oriented Software Development (AOSD) is a programming methodology that addresses limitations in object-oriented programming for modularizing cross-cutting concerns. AOSD uses aspects to encapsulate cross-cutting concerns so they can be separated from the core functionality. Aspects are automatically incorporated into the system by a weaver. This improves modularity and makes software easier to maintain and evolve over time.

Tecnología
1 de 26
Aspect-Oriented Software Development (AOSD) Jignesh Patel Jignesh.Patel [AT] umkc [DOT] edu
Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why AOP? – Example You are responsible for maintaining large software system that managed payroll and personnel functions for your organization. What if management issued a new requirement ? “ create a log of all changes to an employee’s data” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],What would you do?
Aspect-Oriented Programming ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
System = set of “concerns” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Concerning “Concerns” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Crosscutting Concerns ,[object Object],Performance
Aspect-Oriented Programming ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Aspect-Oriented Programming components and aspect descriptions weaver (compile-time) Source Code (tangled code)
AOSD Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Logging example in AspectJ ,[object Object],[object Object],[object Object],[object Object]
Logging Example – Step1 ,[object Object],[object Object],[object Object]
Logging Example – Step2 ,[object Object],[object Object],[object Object]
Logging Example – Step3 ,[object Object],[object Object],Output:
Logging Example – Step3 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Output: Lets play “ starwars ”
Recap of AOP Separation of concerns (monitoring, synchronisation, debugging, security, etc.) Where What MyAspect In MyProgram Before process { display data print “before process” } MyProgram collect data process data display result Weaver Synchronisation Aspect Business code Classes Monitor Aspect Tangled Classes, Crosscutting Concerns synchronisation monitoring MyProgram collect data display data print “before process” process data display result
What does all these mean? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AOP – a prism analogy
Early Aspects & AOSD research ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Among the Most Popular downloads ,[object Object],[object Object],Communications of the ACM, Volume 48, No 4 (Apr 2005), Pages 33-34
Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Latest AOSD conference (2005, March 22-26, Chicago, Illinois) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Aspect Oriented Software Development

  • 1. Aspect-Oriented Software Development (AOSD) Jignesh Patel Jignesh.Patel [AT] umkc [DOT] edu
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12. Aspect-Oriented Programming components and aspect descriptions weaver (compile-time) Source Code (tangled code)
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19. Recap of AOP Separation of concerns (monitoring, synchronisation, debugging, security, etc.) Where What MyAspect In MyProgram Before process { display data print “before process” } MyProgram collect data process data display result Weaver Synchronisation Aspect Business code Classes Monitor Aspect Tangled Classes, Crosscutting Concerns synchronisation monitoring MyProgram collect data display data print “before process” process data display result
  • 20.
  • 21. AOP – a prism analogy
  • 22.
  • 23.
  • 24.
  • 25.
  • 26.