Contents

# Copyright: Copyright 2009 Topic Maps Lab, University of Leipzig.
# License:   Apache License, Version 2.0

module RTM
  module Navigation  
    module Topic
      
      # Returns all indicators (subject identifiers) of this Topic.
      #
      # The result may be empty.
      #
      # :call-seq:
      #   indicators -> Array of Strings
      #
      def indicators
        getSubjectIdentifiers.map{|locator| locator.value}
      end
      
      # Returns one indicator (subject identifier) of this Topic or nil
      # if this Topic has no indicator.
      #
      # :call-seq:
      #   indicator -> String or nil
      #
      def indicator
        return indicators.empty? ? nil : indicators.sort.first # TODO Which sorting algorithm?
      end
      
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
rtm-0.3.1	lib/rtm/navigation/topic/indicators.rb
rtm-0.3.0	lib/rtm/navigation/topic/indicators.rb
rtm-0.2.1	lib/rtm/navigation/topic/indicators.rb
rtm-0.2.0	lib/rtm/navigation/topic/indicators.rb
rtm-0.2	lib/rtm/navigation/topic/indicators.rb