module RDF::Util::UUID

Utilities for UUID handling.

@see en.wikipedia.org/wiki/Universally_unique_identifier

Public Class Methods

generate(format: :default) click to toggle source

Generates a UUID string.

This will make use of either the [UUID][] gem or the [UUIDTools][] gem, whichever of the two happens to be available.

[UUID]: rubygems.org/gems/uuid [UUIDTools]: rubygems.org/gems/uuidtools

@param [:default, :compact, :urn] format (:default) @return [String] a UUID string @raise [LoadError] if no UUID library is available @see rubygems.org/gems/uuid @see rubygems.org/gems/uuidtools

# File lib/rdf/util/uuid.rb, line 21
def self.generate(format: :default)
  begin
    require 'uuid'
    ::UUID.generate(format)
  rescue LoadError
    begin
      require 'uuidtools'
      ::UUIDTools::UUID.random_create.hexdigest
    rescue LoadError
      raise LoadError.new("no such file to load -- uuid or uuidtools")
    end
  end
end