andreasronge

# This SPIKE is now commited in branch rest: http://github.com/andreasronge/neo4j/tree/restful

# This is a old, see branch for new code, example and a spike of how RESTful Neo4j API would work

require 'rubygems'
require 'json'
require 'sinatra/base'
require 'neo4j'

# This mixin creates the following restful resources

andreasronge

require 'model' # from the example/imdb neo4j.rb example

class Actor
  def acted_in_cool_movies
      traverse.outgoing(:acted_in).find_all {|movie| movie.relationship?(:cool_movies, :incoming)}
  end
end

cool_movies = Node.new
all_cool_movies = [m1,m2] # m1,m2 are two movies - defined somewhere else

andreasronge

require "rubygems"
require "neo4j"

class Person
  include Neo4j::NodeMixin

  # define Neo4j properties
  property :name

  # define an one way relationship to any other node

andreasronge

require 'rubygems'
require 'neo4j'

# include the Module so we can skip the Neo4j:: prefix
include Neo4j

# this node is accessible from Neo4j.ref_node
# add a relationship to the top principal = All principals
class Neo4j::ReferenceNode
  has_one :top_principal

andreasronge

require 'rubygems'
require 'neo4j'
include Neo4j

Transaction.new

# create some people
andreas = Node.new :name => 'andreas'
peter = Node.new :name => 'peter'
kalle = Node.new :name => 'kalle'

andreasronge

module Neo4j
  module Batch

    # == Usage
    #
    #  === Nodes/Properties and Relationships
    #
    #  Example:
    #
    #    inserter = Neo4j::Batch::Inserter.new(config, storage)

andreasronge

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0xb3746cdd, pid=9500, tid=2348546928
#
# JRE version: 6.0_24-b07
# Java VM: Java HotSpot(TM) Server VM (19.1-b02 mixed mode linux-x86 )
# Problematic frame:
# J  org.jruby.RubyBasicObject.getRuntime()Lorg/jruby/Ruby;
#

andreasronge

InvokeDynamicSupport.java:2541:in `findVirtual': java.lang.RuntimeException: java.lang.IllegalAccessException: symbolic reference class is not public: class org.neo4j.kernel.impl.core.RelationshipProxy, from org.jruby.runtime.invokedyna$
        from InvokeDynamicSupport.java:1603:in `createJavaHandle'
        from InvokeDynamicSupport.java:1103:in `handleForMethod'
        from InvokeDynamicSupport.java:1059:in `tryDispatchDirect'
        from InvokeDynamicSupport.java:1065:in `getTarget'
        from InvokeDynamicSupport.java:441:in `invocationFallback'
        from jruby.rb:28:in `method__2$RUBY$visit_ref_node'
        from jruby$method__2$RUBY$visit_ref_node:65535:in `call'
        from jruby$method__2$RUBY$visit_ref_node:65535:in `call'
        from InvokeDynamicSupport.java:1244:in `fail'

andreasronge

recommend = Neo4j.query do
   node(alice).where_not{|me| me > ':follows' > :user} > ':used_tag' > :tag < ':used_tag' < :user
   ret(node(:user), count(:tag).desc(count(:tag)))
end.first[:user]

andreasronge

# load 'nodes.rb'
require 'rubygems'
require 'neo4j'

alice = Neo4j::Transaction.run { Neo4j::Node.new }
bob   = Neo4j::Transaction.run { Neo4j::Node.new }

Neo4j::Transaction.run do 
  alice[:name] = "alice"
  alice[:score] = [42,4]