Class: AutomobileTypeFuelYear

Inherits:
ActiveRecord::Base
  • Object
show all
Extended by:
Earth::Model
Defined in:
lib/earth/automobile/automobile_type_fuel_year.rb

Constant Summary collapse

TABLE_STRUCTURE = 
"\nCREATE TABLE automobile_type_fuel_years\n  (\n     name                      CHARACTER VARYING(255) NOT NULL PRIMARY KEY,\n     type_name                 CHARACTER VARYING(255),\n     fuel_family               CHARACTER VARYING(255),\n     year                      INTEGER,\n     share_of_type             FLOAT,\n     annual_distance           FLOAT,\n     annual_distance_units     CHARACTER VARYING(255),\n     ch4_emission_factor       FLOAT,\n     ch4_emission_factor_units CHARACTER VARYING(255),\n     n2o_emission_factor       FLOAT,\n     n2o_emission_factor_units CHARACTER VARYING(255)\n  );\n\n"

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Earth::Model

extend_mining, extended, registry

Class Method Details

.find_by_type_name_and_fuel_family_and_closest_year(type_name, fuel_family, year) ⇒ Object

Used by Automobile and AutomobileTrip



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# File 'lib/earth/automobile/automobile_type_fuel_year.rb', line 30

def self.find_by_type_name_and_fuel_family_and_closest_year(type_name, fuel_family, year)
  candidates = where(:type_name => type_name, :fuel_family => fuel_family)
  if year > (max_year = candidates.maximum(:year))
    candidates.where(:year => max_year).first
  else
    candidates.where(:year => [year, candidates.minimum(:year)].max).first
  end
end

Instance Method Details

#type_fuel_year_controls ⇒ Object

for calculating ch4 and n2o ef



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# File 'lib/earth/automobile/automobile_type_fuel_year.rb', line 40

def type_fuel_year_controls
  AutomobileTypeFuelYearControl.find_all_by_type_name_and_fuel_family_and_closest_year(type_name, fuel_family, year)
end