Class: Enums::Fuzziness

Inherits:
Object
  • Object
show all
Defined in:
lib/enums/fuzziness.rb

Overview

A unit class that encapsulates all in-exact search parsing and conversion from similarities to edit distances etc.

Class Method Summary collapse

Class Method Details

.auto(low = nil, high = nil) ⇒ Object

Returns a fuzziness object with maximum levenshtein distance in auto mode.

Generates an edit distance based on the length of the term.
Low and high distance arguments may be optionally provided
AUTO:[low],[high]. If not specified, the default values are 3 and 6,
equivalent to AUTO:3,6 that make for lengths:
  0..2
    Must match exactly
  3..5
    One edit allowed
  >5
    Two edits allowed
AUTO should generally be the preferred value for fuzziness.



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# File 'lib/enums/fuzziness.rb', line 48

def self.auto(low = nil, high = nil)
  new("#{AUTO}:#{low},#{high}")
end

.one ⇒ Fuzziness

Returns a fuzziness object with maximum levenshtein distance as one.

Returns:

  • (Fuzziness) —

    returns a fuzziness object with maximum levenshtein distance as one.



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# File 'lib/enums/fuzziness.rb', line 26

def self.one
  new(ONE)
end

.two ⇒ Fuzziness

Returns a fuzziness object with maximum levenshtein distance as two.

Returns:

  • (Fuzziness) —

    returns a fuzziness object with maximum levenshtein distance as two.



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# File 'lib/enums/fuzziness.rb', line 32

def self.two
  new(TWO)
end

.zero ⇒ Fuzziness

Returns Fuzziness object corresponding to exact match

Returns:

  • (Fuzziness) —

    returns Fuzziness object corresponding to exact match



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# File 'lib/enums/fuzziness.rb', line 20

def self.zero
  new(ZERO)
end