class Misc {

	public static void copyContext(String keys, Map<String,Object> from, Map<String,Object> to) {
		if (StringUtils.isNotEmpty(keys) && from!=null && to!=null) {
			StringTokenizer st = new StringTokenizer(keys,",;");
			while (st.hasMoreTokens()) {
				String key=st.nextToken();
				Object value=from.get(key);
				to.put(key,value);
			}
		}
	}

}