public void onResponse(ResponseMessage response) {
if (response instanceof KeywordQueryRespMessage) {
ScoreDocList sdList = ((KeywordQueryRespMessage) response)
.getSdList();
sdList.sortList();
final Counter counter = new Counter(sdList.size());
for (Iterator itr = sdList.getSdList().iterator(); itr.hasNext(); ) {
ScoreDoc sd = (ScoreDoc) itr.next();
String nodeId = sd.getNodeId();
Integer docId = new Integer(sd.getDocId());