Class: Unitsml::Unitsdb::Units

Inherits:
Object
  • Object
show all
Defined in:
lib/unitsml/unitsdb/units.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#units ⇒ Object

Returns the value of attribute units.



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# File 'lib/unitsml/unitsdb/units.rb', line 6

def units
  @units
end

Instance Method Details

#filtered ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 18

def filtered
  @filtered ||= units_symbol_ids.reject do |unit|
    ((/\*|\^|\/|^1$/).match?(unit) || find_by_symbol_id(unit).prefixed)
  end
end

#find_by_id(u_id) ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 8

def find_by_id(u_id)
  units.find { |unit| unit.id == u_id }
end

#find_by_name(u_name) ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 12

def find_by_name(u_name)
  units.find do |unit|
    unit.unit_symbols.find { |u_sym| u_sym.id == u_name }
  end
end

#find_by_symbol_id(sym_id) ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 24

def find_by_symbol_id(sym_id)
  units_symbol_hash[sym_id]
end

#units_symbol_hash ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 32

def units_symbol_hash
  @symbol_ids_hash ||= {}

  if @symbol_ids_hash.empty?
    units.each_with_object(@symbol_ids_hash) do |unit, object|
      unit.unit_symbols.each { |unit_sym| object[unit_sym.id] = unit }
    end
  end
  @symbol_ids_hash
end

#units_symbol_ids ⇒ Object 



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# File 'lib/unitsml/unitsdb/units.rb', line 28

def units_symbol_ids
  units_symbol_hash.keys
end