ADG: Annotated Dependency Graphs

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ADG Annotated Dependency Graphs

• Ahmed Hassan and Richard Holt

University Of Waterloo, Canada
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Motivating Example
A Year Later
??!
??!
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Unexpected Dependencies

• What?
• New data dependency
• New functional dependency
• Why?
• Is it a bug fix?
• Developer laziness / ignorance?
• When?
• Just before a release
• Just last week
• Who?
• Was it is me?
• Was it a junior developer?

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Annotated Dependency Graph

• Dependency Graph show only
• Entities (func/var/subs)
• Relations (call/use)
• Add Developer Sticky Notes
• Rationale
• Time
• Developer

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Building ADG

• Manual
• Get developers to annotate the graph
• Extra work/ new process
• Automated
• Use source control data
• Accurate historical records
• No extra work needed
• Easy to generate

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Conclusion

• ADG extend traditional dependency graphs
• ADG can be automatically built from source
  control data
• ADG assist developers in understanding unexpected
  dependencies