return this.matchingRuleRegistry.lookup( orderingId );
if ( orderingId != null ) { return this.matchingRuleRegistry.lookup( orderingId ); }  if ( superiorId != null ) { return getSuperior().getOrdering(); }  return null;
        public MatchingRule getOrdering() throws NamingException        {            return this.matchingRuleRegistry.lookup( orderingId );        }