Class: Rox::Core::Variant

Inherits:
Object
  • Object
show all
Defined in:
lib/rox/core/entities/variant.rb

Direct Known Subclasses

Flag, Server::RoxVariant

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(default_value, options) ⇒ Variant

Returns a new instance of Variant.



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# File 'lib/rox/core/entities/variant.rb', line 10

def initialize(default_value, options)
  @default_value = default_value
  @options = options.clone
  @options << default_value unless options.include?(default_value)

  @condition = nil
  @parser = nil
  @context = nil
  @impression_invoker = nil
  @client_experiment = nil
  @name = nil
end

Instance Attribute Details

#client_experiment ⇒ Object

Returns the value of attribute client_experiment.



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# File 'lib/rox/core/entities/variant.rb', line 8

def client_experiment
  @client_experiment
end

#condition ⇒ Object

Returns the value of attribute condition.



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# File 'lib/rox/core/entities/variant.rb', line 8

def condition
  @condition
end

#context ⇒ Object

Returns the value of attribute context.



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# File 'lib/rox/core/entities/variant.rb', line 8

def context
  @context
end

#default_value ⇒ Object

Returns the value of attribute default_value.



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# File 'lib/rox/core/entities/variant.rb', line 8

def default_value
  @default_value
end

#impression_invoker ⇒ Object

Returns the value of attribute impression_invoker.



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# File 'lib/rox/core/entities/variant.rb', line 8

def impression_invoker
  @impression_invoker
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/rox/core/entities/variant.rb', line 8

def name
  @name
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/rox/core/entities/variant.rb', line 8

def options
  @options
end

#parser ⇒ Object

Returns the value of attribute parser.



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# File 'lib/rox/core/entities/variant.rb', line 8

def parser
  @parser
end

Instance Method Details

#set_for_evaluation(parser, experiment, impression_invoker) ⇒ Object 



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# File 'lib/rox/core/entities/variant.rb', line 23

def set_for_evaluation(parser, experiment, impression_invoker)
  if experiment.nil?
    @client_experiment = nil
    @condition = ''
  else
    @client_experiment = Experiment.new(experiment)
    @condition = experiment.condition
  end

  @parser = parser
  @impression_invoker = impression_invoker
end

#value(context = nil) ⇒ Object 



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# File 'lib/rox/core/entities/variant.rb', line 36

def value(context = nil)
  return_value = @default_value
  merged_context = MergedContext.new(@context, context)

  if !@parser.nil? && !@condition.nil? && !@condition.empty?
    evaluation_result = @parser.evaluate_expression(@condition, merged_context)
    unless evaluation_result.nil?
      value = evaluation_result.string_value
      if !value.nil? && !value.empty?
        return_value = value if @options.include?(value)
      end
    end
  end

  @impression_invoker.invoke(ReportingValue.new(@name, return_value), @client_experiment, merged_context) if @impression_invoker != nil

  return_value
end