Neo4j-wrapper <img src=“https://secure.travis-ci.org/andreasronge/neo4j-wrapper.png” />¶ ↑

This contains the Ruby wrapper of the Neo4j::Node and Neo4j::Relationship java object defined in the neo4j-core gem. This gem is included in neo4j.

Docs¶ ↑

• Github Wiki

• YARD

The public API¶ ↑

{Neo4j::NodeMixin} The Java Neo4j Node

{Neo4j::RelationshipMixin} The Java Relationship

{Neo4j::IdentityMap} The Identity Map (should be disabled for batch imports and Rake scripts)

Example¶ ↑

class Company
  include Neo4j::NodeMixin
  has_n(:employees)
end

class Person
  include Neo4j::NodeMixin
  property :name
  property :age, :size, :type => Fixnum, :index => :exact
  property :description, :index => :fulltext

  has_one(:best_friend)
  has_n(:employed_by).from(:employees)
end

Neo4j::Transaction.run do
  Person.new(:name => 'jimmy', :age => 35)
end

person = Person.find(:age => (10..42)).first

Neo4j::Transaction.run do
  person.best_friend = Person.new
  person.employed_by << Company.new(:name => "Foo ab")
end

# find by navigate incoming relationship
company = person.employed_by.find { |p| p[:name] == 'Foo ab' }
puts "Person #{person.name} employed by #{company[:name]}"
# navigate the outgoing relationship:
company.employees.each {|x| puts x.name}

Changes¶ ↑

Changes from the neo4j.rb

• Use of YARD instead of RDoc

• Some tidy up of the API and code

• Change of Ruby module structure.

• More RSpecs and more use of mocking combined with real testing of the Java layer

• Make sure that we retrieve relationships and nodes lazy if possible.

This gem contains two modules: Neo4j and Neo4j::Wrapper The Neo4j module is public and the Neo4j::Wrapper(::*) are private modules.

License¶ ↑

• neo4j-wrapper - MIT, see the LICENSE file github.com/andreasronge/neo4j-wrapper/tree/master/LICENSE.

• Lucene - Apache, see lucene.apache.org/java/docs/features.html

• Neo4j - Dual free software/commercial license, see neo4j.org/

Notice there are different license for the neo4j-community, neo4j-advanced and neo4j-enterprise jar gems. Only the neo4j-community gem is by default required.