Class: Link

Inherits:
Object
  • Object
show all
Defined in:
lib/rgraph/link.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes) ⇒ Link

Returns a new instance of Link.

Raises:

  • (Exception) 


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# File 'lib/rgraph/link.rb', line 4

def initialize(attributes)
  @attributes = attributes
  @source = @attributes.delete(:source)
  @target = @attributes.delete(:target)
  @type = @attributes.delete(:type) || 'undirected'

  raise Exception.new("source cant be nil") unless @source
  raise Exception.new("target cant be nil") unless @target
  raise Exception.new("source must be of type Node") unless @source.is_a? Node
  raise Exception.new("target must be of type Node") unless @target.is_a? Node

  @attributes[:weight] ||= 1

  @source.neighbours << @target
  @target.neighbours << @source unless @type == 'directed'
end

Instance Attribute Details

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/rgraph/link.rb', line 2

def source
  @source
end

#target ⇒ Object

Returns the value of attribute target.



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# File 'lib/rgraph/link.rb', line 2

def target
  @target
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/rgraph/link.rb', line 2

def type
  @type
end

Instance Method Details

#[](attribute) ⇒ Object 



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# File 'lib/rgraph/link.rb', line 21

def [](attribute)
  @attributes[attribute]
end