Class: Addressive::Graph::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/addressive/graph.rb

Overview

A Builder is used to construct a network. It’s here so that a Addressive::Graph can have only read methods, while a Builder does the heavy lifting. This class should not be generated directly, it’s created for you by #build and #initialize.

Instance Method Summary collapse

Constructor Details

#initialize(network) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/addressive/graph.rb', line 164

def initialize(network)
  @network = network
end

Instance Method Details

#default(name, value) ⇒ Object

Note:

Only nodes created after this default has been set will receive this value.

Sets a network-wide default.



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# File 'lib/addressive/graph.rb', line 189

def default(name,value)
  @network.spec_factory.defaults[name]=value
end

#node(name) {|NodeBuilder| ... } ⇒ NodeBuilder

Creates or edits the node with the given name in the current network and yields and returns a NodeBuilder. This NodeBuilder can then be use to actually describe the node.

Yields:

Returns:



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# File 'lib/addressive/graph.rb', line 173

def node(name, &block)
  n = @network.node(name)
  if block
    if block.arity == 1
      yield @network.node_builder_class.new(@network, n)
    else
      @network.node_builder_class.new(@network, n).instance_eval(&block)
    end
  end
  return @network.node_builder_class.new(@network, n)
end