Class: Dredd::Dsl::Aggregate

Inherits:
Object
  • Object
show all
Defined in:
lib/dredd/dsl/aggregate.rb

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth, *args, &block) ⇒ Object 



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# File 'lib/dredd/dsl/aggregate.rb', line 23

def method_missing(meth, *args, &block)
  if [:sum, :mean, :min, :max, :size].include?(meth)
    @func = meth
    @projection = block
    @predicate = Predicate.new
    return @predicate
  else
    super
  end
end

Instance Method Details

#execute(collection) ⇒ Object 



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# File 'lib/dredd/dsl/aggregate.rb', line 9

def execute(collection)
  return collection unless @func

  arr = if @projection
    collection.map{|k| Hashie::Mash.new(k) }
              .map{|k| k.instance_eval(&@projection) }
  else
    (0...collection.size).to_a
  end

  @predicate.execute(arr.to_scale.send(@func))
end