Contents

module N4j::Node
  
  autoload :AutoRelate, 'n4j/auto_relate'
  
  extend ActiveSupport::Concern
  included do
    include AutoRelate
    # include N4j::Entity
  end
  module ClassMethods
    def find(n)
      find_by_node_id(n)
    end
    
    def find_by_node_id(n)
      find_by_path("/node/#{n}")
    end
    
    def find_by_path(path)
      path.sub!(N4j.neo4j_url_prefix,'')
      result = N4j.batch([{:to => path, :method => 'GET'}])
      new(result.first['body'])      
    end
    
    def service_root
      find_by_node_id(0)
    end
  end

  def initialize(hsh)
    super(hsh)
    unless N4j.neo4j_hash?(hsh)
      self.data = hsh.dup
    end
  end

  def create_path
    '/node'
  end

  def body_hash
    data
  end

  def dependent
    relationships
  end

  def connected_unsaved
    new_relationships
  end

  def post_save
    clear_new_relationships!
  end

  def relationships(direction = 'all_relationships', types = [], clear_cache = false)
    @relationship_cache ||= {}
    if persisted?
      path = from_neo4j_relative[direction] + '/' + [types].flatten.join('&')
      @relationship_cache.delete(path) if clear_cache
      @relationship_cache[path] ||= GenericRelationship.find_by_node_path(path)
    else
      []
    end
  end

  def entity_type
    'node'
  end

  def traverse(opts = {})
    # Started this approach, stoppedto investigate Cypher
    defaults = {:start => path, :instantiate_with => self.class }
    N4j::Traversal.new(:start => path)
  end

  def cypher(opts = {})
    defaults = {:start => self, :instantiate_with => self.class}
    N4j::Cypher.new(defaults.merge(opts))
  end

  def new_relationships
    @new_relationships ||= []
  end

  def clear_new_relationships!
    @new_relationships = []
  end

end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
n4j-0.0.1.4	lib/n4j/node.rb