# File lib/rdf/redland/model.rb, line 501
    def rewrite(context=nil)
      self.triples() do |sub,pred,obj|
        sub = @canonical[sub.to_s] if @canonical.key?(sub.to_s)
        obj = @canonical[obj.to_s] if @canonical.key?(obj.to_s)
        
        
        @master.add(sub,pred,obj,context)
      end
    end