class AwsRecord::Generators::SecondaryIndex

def get_option_value(raw_option)
  case raw_option
  when /hkey\{(\w+)\}/
    return :hash_key, $1
  when /rkey\{(\w+)\}/
    return :range_key, $1
  when /proj_type\{(\w+)\}/
    return :projection_type, $1
  else
    raise ArgumentError.new("Invalid option for secondary index #{raw_option}")
  end
end