Presentation: “Using AsciiArt to Analyse your SourceCode with Neo4j and OSS Tools” at GeekOut.ee 2014

Posted by Michael Hunger on Jun 15, 2014 in conference, neo4j, programming languages |

During the awesome GeekOut conference organized by my friends at ZeroTurnaround I was asked to stand in for Tim Fox who couldn’t come.

So instead of using a existing presentation I decided to finally write one up over night that covers one aspect of graph databases that is close to my heart:

Software Analytics with Graphs

When I first learned about Neo4j in 2008, my first project was pulling in Java class-file information into Neo4j, to find interesting tidbits about the JDK. Fast forward 4 years.

Other things kept me busy until I 2012, when I was speaking at a InnoQ tech-day and thought this would be a good topic to talk about.

I was so amazed by projects that others did in this area and published a blog post on “Graph Databases and Software Metrics to show what I’ve found. These were:

  • Raoul-Gabriel Urma: Expressive and Scalable Source Code Queries with Graph Databases (Paper)
  • Rickard Öberg: NeoMVN is tracing maven dependencies (GitHub)
  • Pavlo Baron: Graphlr, a ANTLR storage in Neo4j (GitHub)

When having a train-ride with my friend Dirk from Buschmais for two hours, he got a full load of my excitement about this topic, and he saw a real good practical use for his daily work with large software projects. Having your projects structure in a graph allows you to:

  1. Query the graph structures for insights on the code level (e.g. code-smells)
  2. Enrich the graph structure with higher level, technical, architectural and business concepts
  3. Define rules and metrics based on those higher level concepts.
  4. Run the parsing, enrichment, metrics computation and rule checking as part of your build process, generating reports and failing it in case of violation of those rules

All those ideas resulted in an impressive open-source project called jQAssistant which does all of the above (and much more).

So back to my GeekOut presentation. I sat down late night until 3am and wrote it up in AsciiDoc (+ deck.js) so you can fork it from the github repo, download the PDF or view the HTML-Slides online.

The session has been recorded, I’ll embed the video as soon as it is online. Then you can even listen to my hoarse voice.

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