AOP-Driven Variability in Software Product Lines

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AOP-Driven Variability in Software Product Lines
Vander Alves, Ayla Dantas, and Paulo
Borba Informatics Center UFPE Brazil
vra,add,phmb_at_cin.ufpe.br
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Motivation

• Demand for pervasive computing applications
• Different devices and features
• Comply with ever-increasing quality and
  productivity requirements

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Key idea

• Product line approach using AOP to implement
  feature variability

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Product Line Development
Product Development
Core Asset Development
Management
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Product line
Source SEI
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Product line
Source SEI
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Product line variability
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Aspect-oriented programming (AOP)

• Distribution, persistence, synchronization,
  logging, protocols.
• Crosscuting concerns
• Spread and tangled code
• Hard to maintain and reuse
• OO techniques cannot completely address

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AOP

• AOP modularizes crosscutting concerns
• Join point model
• Aspect pointcut, advice, introduction
• Localized implementation
• Composability
• Examples AspectJ, HyperJ

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Our approach
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Our approach
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Case study J2ME dictionary
1. Feature View

• Define product line features
• Identify common features for all products
• Identify variable features

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Case study J2ME dictionary
2. Architecture View

• Design flexible architecture
• Focus on mandatory features
• Use architectural/design
• patterns

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Case study J2ME dictionary
3. Variation View

• Identify application points to be crossed
• Design aspects correspondent to variable
• features (feature -gt aspect)
• Design auxiliary classes
• Use design patterns

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Case study J2ME dictionary
4. Composition View

• Collect the aspects relative
• to the desired features
• Select auxiliary classes
• Use an AOP Weaver
• Generate weaved code

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Case study J2ME dictionary
5. Product Generation View

• Process code
• Package the application
• Install and test

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References

• http//www.sei.cmu.edu/plp/framework.html
• Sérgio Soares, Eduardo Laureano, Paulo Borba.
  Implementing distribution and persistence aspects
  with AspectJ. In 17th Annual ACM Conference on
  Object-Oriented Programming, Systems, Languages
  and Applications, OOPSLA'2002, pages 174-190,
  Seattle, USA, 4th-8th November 2002.
• www.cin.ufpe.br/gpqs
• Krzystof Czarnecki and Ulrich Eisenecker.
  Generative Programming Methods, Tools, and
  Applications. Addison-Wesley.2000
• http//gpce.org

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Questions?