Neo4jr-Social is a self contained HTTP REST + JSON interface to the graph database Neo4j. Neo4jr-Social supports simple dynamic node creation, building relationships between nodes and also includes a few common social networking queries out of the box (i.e. linkedin degrees of seperation and facebook friend suggestion) with more to come. Think of Neo4jr-Social is to Neo4j like Solr is to Lucene.

Neo4jr-Social was built in JRuby but is language agnostic and is designed to run as a self-contained service or can be deployed under Jetty or Tomcat.

• Java

• JRuby: jruby.org

• sudo aptitude install jruby1.2 rake rubygems

• install rvm (see rvm.beginrescueend.com/rvm/install/)

Once done, use rvm to install latest jruby and required gems

• rvm install jruby

• rvm use –default jruby

• gem install jruby-openssl

• gem install rake

• gem install rspec

• gem install test-client

• gem install rack-test

• gem install json-jruby -v 1.4.1

• gem install jeweler

• gem install warbler

• gem install rcov

Building the code and documentation

• rake -T # optional, lists possible tasks

• rake gemspec

• rake rcov –debug

• rake rdoc

• rake warify

• rake build

Or short version (without documentation)

• rake gemspec warify build

Install Ruby Gem: neo4jr-social

• gem install neo4jr-social

After installing the above gems, an executable ‘start-neo4jr-social’ should be in your $PATH. This will start the service and the database and listen for HTTP requests on localhost at port 8988 by default:

start-neo4jr-social -p8988

You can also start the service and specify the directory of where the neo4j database is stored or where to create a new database. If you omit this setting a database will be created in your tmp directory and destroyed when you shutdown the server.

start-neo4jr-social -p8988 -dsome_relative_or_absolute_directory

Run start-neo4jr-social –help to see all options

github.com/mdeiters github.com/klobuczek

github.com/gregormelhorn github.com/mikkorantalainen

Copyright © 2009 Matthew Deiters. See LICENSE for details.