Class: Arel::Nodes::Descending

Inherits:
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  • Object
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Defined in:
ext/arel/nodes/descending.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expr, nulls = nil) ⇒ Descending

Returns a new instance of Descending.



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# File 'ext/arel/nodes/descending.rb', line 7

def initialize expr, nulls=nil
  super(expr)
  @nulls = nulls
end

Instance Attribute Details

#nulls ⇒ Object

Returns the value of attribute nulls.



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# File 'ext/arel/nodes/descending.rb', line 5

def nulls
  @nulls
end

Instance Method Details

#reverse ⇒ Object 



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# File 'ext/arel/nodes/descending.rb', line 12

def reverse
  reverse_nulls = if nulls == :nulls_first
    :nulls_last
  elsif nulls
    :nulls_first
  else
    nil
  end
  
  Ascending.new(expr, reverse_nulls)
end