Module: Neon::Node

Extended by:
ArgumentHelpers
Defined in:
lib/neon/node.rb,
lib/neon/node/rest.rb

Defined Under Namespace

Classes: Rest

Class Method Summary collapse

Methods included from ArgumentHelpers

extract_session

Class Method Details

.load(id, session = Neon::Session.current) ⇒ Node

Loads an existing node with the given id

Parameters:

  • id (Integer) —

    the id of the node to be loaded and returned.

  • session (Session) (defaults to: Neon::Session.current) —

    an optional session from where to load the node.

Returns:

  • (Node) —

    an existing node with the given id and specified session. It returns nil if the node is not found.



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# File 'lib/neon/node.rb', line 33

def load(id, session = Neon::Session.current)
  begin
    session.load(id)
  rescue NoMethodError => e
    _raise_invalid_session_error(session, e)
  end
end

.new(attributes, labels, session) ⇒ Node

Creates a new Node in the database. All subsequent changes are immediately persisted.

Parameters:

  • attributes (Hash) —

    the properties to initialize the node with.

  • labels (String, Symbol, Array<String, Symbol>) —

    an optional list of labels or an array of labels. Labels can be strings or symbols.

  • session (Session) —

    an optional session can be provided as the last value to indicate the database where to create the node. If none is provided then the current session is assumed.

Returns:

  • (Node) —

    a new node.



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# File 'lib/neon/node.rb', line 17

def new(attributes, *args)
  session = extract_session(args)
  labels = args.flatten
  begin
    session.create_node(attributes, labels)
  rescue NoMethodError => e
    _raise_invalid_session_error(session, e)
  end
end