class Sequel::Postgres::PropertyGraph::Generator::Edge

  1. lib/sequel/adapters/shared/postgres.rb
Superclass: Element

Edge is used for block passed to Create#edge, used to configure edges in the property graph.

Methods

Public Class

  1. new

Public Instance

  1. data
  2. destination
  3. source

Constants

Data = Struct.new(:name, :key, :labels, :source, :destination)  

Public Class methods

new(name, opts=OPTS, &block)

In addition to inherited behavior, raises an error if a block is not passed or source or destination is not called in the block.

[show source] 
    # File lib/sequel/adapters/shared/postgres.rb
397 def initialize(name, opts=OPTS, &block)
398   super
399 
400   unless @source && @destination
401     raise Error, "source and/or destination not defined for property graph edge"
402   end
403 end

Public Instance methods

data()
[show source] 
    # File lib/sequel/adapters/shared/postgres.rb
405 def data
406   Data.new(@name, @key, @labels, @source, @destination).freeze
407 end
destination(name, &block)

Specify the destination for the edge, with block evaluted by Target.

[show source] 
    # File lib/sequel/adapters/shared/postgres.rb
416 def destination(name, &block)
417   raise Error, "cannot specify multiple destinations for a property graph edge" if @destination
418   @destination = Target.new(name, &block)
419 end
source(name, &block)

Specify the source for the edge, with block evaluted by Target.

[show source] 
    # File lib/sequel/adapters/shared/postgres.rb
410 def source(name, &block)
411   raise Error, "cannot specify multiple sources for a property graph edge" if @source
412   @source = Target.new(name, &block)
413 end