Class: FactMetrics::AverageConfig

Inherits:
Object
  • Object
show all
Defined in:
lib/fact_metrics/average_config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, uses: nil, **options) ⇒ AverageConfig

Returns a new instance of AverageConfig.



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# File 'lib/fact_metrics/average_config.rb', line 4

def initialize(name, uses: nil, **options)
  @name = name
  @uses = uses
  @options = options
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/fact_metrics/average_config.rb', line 2

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/fact_metrics/average_config.rb', line 2

def options
  @options
end

#uses ⇒ Object (readonly)

Returns the value of attribute uses.



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# File 'lib/fact_metrics/average_config.rb', line 2

def uses
  @uses
end

Instance Method Details

#composed_of_attributes ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 14

def composed_of_attributes
  [
    composed_of_name.to_sym,
    class_name: "Metric",
    mapping: {sql_result_name => :value},
    constructor: proc { |value| FactMetrics::Metric.new(value, metric_options) }
  ]
end

#composed_of_name ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 12

def composed_of_name = "average_#{name}_metric"

#field_name ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 31

def field_name
  options[:field] || name.to_s
end

#metric_options ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 35

def metric_options
  options.merge({name: composed_of_name})
end

#scope_name ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 10

def scope_name = "#{name}_averages"

#sql ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 23

def sql
  <<~SQL
    CASE WHEN count(*) != 0 THEN
      AVG(#{field_name})
    END AS #{sql_result_name}
  SQL
end

#sql_result_name ⇒ Object 



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# File 'lib/fact_metrics/average_config.rb', line 11

def sql_result_name = "average_#{name}"