# File lib/sdb/right_sdb_interface.rb, line 61
    def initialize(aws_access_key_id=nil, aws_secret_access_key=nil, params={})
      @nil_rep = params[:nil_representation] ? params[:nil_representation] : DEFAULT_NIL_REPRESENTATION
      params.delete(:nil_representation)
      init({ :name             => 'SDB', 
             :default_host     => ENV['SDB_URL'] ? URI.parse(ENV['SDB_URL']).host   : DEFAULT_HOST, 
             :default_port     => ENV['SDB_URL'] ? URI.parse(ENV['SDB_URL']).port   : DEFAULT_PORT, 
             :default_protocol => ENV['SDB_URL'] ? URI.parse(ENV['SDB_URL']).scheme : DEFAULT_PROTOCOL }, 
           aws_access_key_id     || ENV['AWS_ACCESS_KEY_ID'], 
           aws_secret_access_key || ENV['AWS_SECRET_ACCESS_KEY'], 
           params)
    end