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Analysis Aspects

Analysis Aspects. Deters and Cytron propose to use analysis aspects to get profiling information from running Java programs.

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Analysis Aspects

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  1. Analysis Aspects • Deters and Cytron propose to use analysis aspects to get profiling information from running Java programs. • We explore the design issues behind analysis aspects and show, by example, how to write an interesting aspect-oriented framework that measures bad coupling between objects/aspects.

  2. Decoupling of Aspects • Four aspects: Supplier, TargetBinStack, Checker and Statistics are an aspect-oriented framework. • Customization is done by defining subaspects of Supplier and TargetBinStack. • Decoupling of aspects is achieved through • abstract pointcuts and • Named, concrete pointcuts that are “exported”.

  3. Instrumentation of Java programs with Aspects Aspect framework Aspect Diagram Supplier ImmediatePartBin TargetBinStack ArgumentBin Checker LocallyConstructedBin uses pointcuts ReturnValueBin Requirements: Statistics GlobalPreferredBin Good Separation of Concerns in Law of Demeter Checker http://www.ccs.neu.edu/home/lieber/com3205/f02/solutions/com3205/hw04/ (part 3)

  4. Explanation • The *bin* aspects collect potential preferred supplier objects that represent good coupling in the context of a method body. • The Checker aspect checks each method call whether the receiver is a preferred supplier object. • The Statistics aspect counts events generated by the Checker aspect.

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