QueryResult result = doQuery(user, broker, xpath, null, null,
QueryResult result = doQuery(user, broker, xpath, null,
	public int executeQuery(User user, String xpath, Hashtable parameters) throws Exception {		long startTime = System.currentTimeMillis();		DBBroker broker = null;		try {			broker = brokerPool.get(user);			QueryResult result = doQuery(user, broker, xpath, null, null,					parameters);			result.queryTime = System.currentTimeMillis() - startTime;			connectionPool.resultSets.put(result.hashCode(), result);			return result.hashCode();		} finally {			brokerPool.release(broker);		}	}