Module: Elastic::Support::Traversable

Included in:
Nodes::Base, Results::Base, Elastic::Shims::Base
Defined in:
lib/elastic/support/traversable.rb

Instance Method Summary collapse

Instance Method Details

#pick_nodes(*_types, &_block) ⇒ Object 



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# File 'lib/elastic/support/traversable.rb', line 7

def pick_nodes(*_types, &_block)
  if _types.empty?
    enum = Enumerator.new do |y|
      traverse { |h| y << h }
    end
  else
    enum = Enumerator.new do |y|
      traverse { |h| y << h if _types.any? { |t| h.is_a? t } }
    end
  end

  return enum if _block.nil?
  enum.each(&_block)
end

#traverse(&_block) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/elastic/support/traversable.rb', line 3

def traverse(&_block)
  raise NotImplementedError, "every traversable tree must implement 'traverse'"
end