Class: Druid::PostAggregationOperation

Inherits:
Object
  • Object
show all
Includes:
PostAggregationOperators
Defined in:
lib/druid/post_aggregation.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PostAggregationOperators

#*, #+, #-, #/

Constructor Details

#initialize(left, operator, right) ⇒ PostAggregationOperation

Returns a new instance of PostAggregationOperation.



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# File 'lib/druid/post_aggregation.rb', line 33

def initialize(left, operator, right)
  @left = left.is_a?(Numeric) ? PostAggregationConstant.new(left) : left
  @operator = operator
  @right = right.is_a?(Numeric) ? PostAggregationConstant.new(right) : right
end

Instance Attribute Details

#left ⇒ Object (readonly)

Returns the value of attribute left.



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# File 'lib/druid/post_aggregation.rb', line 31

def left
  @left
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/druid/post_aggregation.rb', line 31

def name
  @name
end

#operator ⇒ Object (readonly)

Returns the value of attribute operator.



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# File 'lib/druid/post_aggregation.rb', line 31

def operator
  @operator
end

#right ⇒ Object (readonly)

Returns the value of attribute right.



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# File 'lib/druid/post_aggregation.rb', line 31

def right
  @right
end

Instance Method Details

#as(field) ⇒ Object 



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# File 'lib/druid/post_aggregation.rb', line 39

def as(field)
  @name = field.name.to_s
  self
end

#as_json(*a) ⇒ Object 



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# File 'lib/druid/post_aggregation.rb', line 61

def as_json(*a)
  to_hash
end

#get_field_names ⇒ Object 



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# File 'lib/druid/post_aggregation.rb', line 44

def get_field_names
  field_names = []
  field_names << left.get_field_names if left.respond_to?(:get_field_names)
  field_names << right.get_field_names if right.respond_to?(:get_field_names)
  field_names
end

#to_hash ⇒ Object 



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# File 'lib/druid/post_aggregation.rb', line 51

def to_hash
  hash = { "type" => "arithmetic", "fn" => @operator, "fields" => [@left.to_hash, @right.to_hash] }
  hash["name"] = @name if @name
  hash
end

#to_json(*a) ⇒ Object 



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# File 'lib/druid/post_aggregation.rb', line 57

def to_json(*a)
  to_hash.to_json(*a)
end