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Aspect-Oriented Programming using Phoenix

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... Adding foreach-style syntactic sugar DEMO: Adding Visitor pattern Advice Ability to inject code at specific points in a program Examples: ... – PowerPoint PPT presentation

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Title: Aspect-Oriented Programming using Phoenix


1
Aspect-Oriented Programming using Phoenix
  • Marc Eaddy
  • MSR Intern
  • Columbia University

2
Motivation
  • Limitations of traditional OO
  • inheritance
  • aggregation
  • Some concerns not separated well
  • concerns I dont know about yet
  • coupling issues with multiple clients
  • operational requirements
  • AOP Open Classes Advice
  • Promise of greater separation of concerns
  • Satisfies specific business needs of the Phoenix
    team

3
Open Classes
  • Ability to split a class definition into separate
    modules
  • Similar to Partial Classes in C except
  • post-compile time
  • works on assemblies no source reqd
  • can extend a class at any time
  • language agnostic
  • DEMO Adding foreach-style syntactic sugar
  • DEMO Adding Visitor pattern

4
Advice
  • Ability to inject code at specific points in a
    program
  • Examples
  • profiling
  • logging/tracing
  • log call sites for a particular function
  • log field get/set
  • dirty bit (persistence/synchronization)
  • caching
  • error checking/handling
  • DEMO enforce field invariants (non-null, const,
    data flow)
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