carol233 / gitgraph

GitGraph

Knowledge Graph for Commit History of a Git repository.

The project is built with Maven. "Main" is the entry class.

Step 1: Open the java project ./GitGraph and then clone a Git project to analyse.

e.g. git clone https://github.com/rahulrj/YahooNewsOnboarding.git

Step 2: The command line parameters are -p, -f and -d.

-p <project_path> -f [<filtering_options>] -d [<database_output_path>]

p - -filter pictures

a - -filter audio

v - -filter videos

c - -customize

The above filtering content can be modified in \src\main\java\helper\TypeFilter.java.

e.g. java -jar gitgraph.jar -p ./YahooNewsOnboarding -f pavc -d D:/neo4j/data/databases/graph.db means that you want to filter pics, audio, videos and some customized filetypes.

Step 3: Download and install Neo4j https://neo4j.com/ . View the knowledge graph at http://localhost:7474

• Remember to change the default settings of Initial Node Display to show more Nodes.

• Use the Cypher statement "MATCH p=()-->() RETURN p" to show all the Nodes and Relationships.

• You can change the color of Nodes and Relationships as you like with Neo4j.

• If you wanna check a specific class like "MainActivity", use "MATCH (b:Class) WHERE b.name="MainActivity" RETURN b". You just need to double-click on the node to see other nodes and relationships associated with it.

More Cypher Statements cases:

• MATCH (c:Commit)-->(f:File)-->(z:Class)-->(m:Method) WHERE c.type = "fixbug" AND m.create_commit = c.name RETURN m.name, m.class, count(m) AS cnt ORDER BY cnt DESC LIMIT 10

• MATCH (c:Commit)-->(f:File) WHERE c.type = "fixbug" AND f.type = "java" AND f.create_commit = c.name RETURN f.name, c.developer

• MATCH(c:Commit) WHERE c.type="fixbug" RETURN count(*)

• Get more information at https://neo4j.com/developer/cypher-query-language/.