Class: RightSupport::Data::UUID::Implementation

Inherits:
Object
  • Object
show all
Defined in:
lib/right_support/data/uuid.rb

Overview

The base class for all UUID implementations. Subclasses must override #initialize such that they raise an exception if the implementation is not available, and #generate such that it returns a String containing a UUID.

Direct Known Subclasses

SimpleUUID, UUIDGem, UUIDTools1, UUIDTools2

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.available ⇒ Object

Determine which UUID implementations are available in this Ruby VM.

Return

available(Array)

the available implementation classes



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# File 'lib/right_support/data/uuid.rb', line 45

def self.available
  avail = []

  @subclasses.each do |eng|
    begin
      eng.new #if it initializes, it's available!
      avail << eng
    rescue Exception => e
      #must not be available!
    end
  end

  avail
end

.default ⇒ Object

Determine the default UUID implementation in this Ruby VM.

Return

available(Array)

the available implementation classes



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# File 'lib/right_support/data/uuid.rb', line 64

def self.default
  #completely arbitrary
  available.first
end

.inherited(klass) ⇒ Object 



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# File 'lib/right_support/data/uuid.rb', line 37

def self.inherited(klass)
  @subclasses << klass
end

Instance Method Details

#generate ⇒ Object

Raises:



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# File 'lib/right_support/data/uuid.rb', line 69

def generate
  raise Unavailable, "This implementation is currently not available"
end