java - Joern: access graph database directly without neo4j-server -


the joern documentation says:

it possible access graph database directly scripts loading database memory on script startup.

how can that?

after running java -jar $joern/bin/joern.jar $codedirectory on code, neo4j database directory (.joernindex) created these .id- , .db-files. possible to access code (with python-joern) without running neo4j server? (is server necessary?)

the web interface way use joern database documented here:

http://joern.readthedocs.io/en/latest/import.html

and python-joern interface documented here:

http://joern.readthedocs.io/en/latest/access.html#python-joern-api

and program:

from joern.all import joernsteps  j = joernsteps()  j.setgraphdburl('http://localhost:7474/db/data/')  # j.addstepsdir('use inject utility traversals')  j.connecttodatabase()  res =  j.rungremlinquery('getfunctionsbyname("main")') res =  j.runcypherquery('...')  r in res: print r

basically url-way talk neo4j server, , called joern's "rest api".

now if want access database "directly", can using java program shown here:

loading neo4j db ram

or python shown here:

https://neo4j.com/developer/python/

https://marcobonzanini.com/2015/04/06/getting-started-with-neo4j-and-python/

but bottomline still going start neo4j database server, , program (via neo4j driver, enable network based communication possible) talk database server.

but if want load "database" files directly, parsed yourself, , extract out data going hard.


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