Class: Arrow::Decimal128DataType

Inherits:
Object
  • Object
show all
Defined in:
lib/arrow/decimal128-data-type.rb

Constant Summary collapse

MAX_PRECISION = 
max_precision

Instance Method Summary collapse

Constructor Details

#initialize(precision, scale) ⇒ Decimal128DataType #initialize(description) ⇒ Decimal128DataType

Creates a new Arrow::Decimal128DataType.

Overloads:

  • #initialize(precision, scale) ⇒ Decimal128DataType

    Examples:

    Create a decimal data type for “XXXXXX.YY” decimal

    Arrow::Decimal128DataType.new(8, 2)

    Parameters:

    • precision (Integer) —

      The precision of the decimal data type. It’s the number of digits including the number of digits after the decimal point.

    • scale (Integer) —

      The scale of the decimal data type. It’s the number of digits after the decimal point.

  • #initialize(description) ⇒ Decimal128DataType

    Examples:

    Create a decimal data type for “XXXXXX.YY” decimal

    Arrow::Decimal128DataType.new(precision: 8,
                              scale: 2)

    Parameters:

    • description (Hash) —

      The description of the decimal data type. It must have ‘:precision` and `:scale` values.

    Options Hash (description):

    • :precision (Integer) —

      The precision of the decimal data type. It’s the number of digits including the number of digits after the decimal point.

    • :scale (Integer) —

      The scale of the decimal data type. It’s the number of digits after the decimal point.



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# File 'lib/arrow/decimal128-data-type.rb', line 55

def initialize(*args)
  n_args = args.size
  case n_args
  when 1
    description = args[0]
    precision = description[:precision]
    scale = description[:scale]
  when 2
    precision, scale = args
  else
    message = "wrong number of arguments (given, #{n_args}, expected 1..2)"
    raise ArgumentError, message
  end
  initialize_raw(precision, scale)
end