* _uri및 ct에 like검색을 수행하여 리턴되는 결과값 중에서 con의 값을 string->interger로 casting한후 원래의 _id를 key로 하여

update하는 java소스 코드이다.(주의할점은 아래의 예제는 makeStringMap를 이용하여 모든 값을 String으로 변경되므로 숫자등의 속성이 유지 되어야 하는 값은 적절하게 변환하여 주어야 한다)

// MongoDB연결
		try {
			mongoClient = new MongoClient(new ServerAddress(db_server, Integer.parseInt(db_port)));
			db = mongoClient.getDB(db_name);
			table = db.getCollection(collection_name);
		} catch (Exception ex) {
			log.debug("MongoDB connection error : "+ex.getMessage());
			if(db != null) {
				db.cleanCursors(true);
				db = null;				
			}
			if(table != null) {table = null;}
			if(mongoClient != null ) {
				mongoClient.close();
			}
			throw ex;
		} 

// con값에 대한 형변환(String -> Integer)
		// 형변환(shell 코드)
	/*		db.resource.find (
				    {"_uri": /TicketCount/status/CONTENT_INST/, "ct": /20161213/}
				)
				    .forEach(function(x) {
				    x.con = new NumberInt(x.con);  
				      db.resource.save(x)  })
	*/		
	   DBObject searchCastQuery = new BasicDBObject();  //"$match", new BasicDBObject("ct", new BasicDBObject("$gte", "20161213T160000")));
	   searchCastQuery.put("_uri", new BasicDBObject("$regex", "TicketCount/status/CONTENT_INST"));
	   //searchCastQuery.put("ct", new BasicDBObject("$regex", "20161213"));
	   searchCastQuery.put("ct", new BasicDBObject("$regex", Utils.sysdateFormat.format(new Date())));
		
		DBCursor cursor = table.find(searchCastQuery);
		while (cursor.hasNext()) {
			DBObject oldObj = cursor.next();
			
			@SuppressWarnings("unchecked")
			Map<String, String> map = makeStringMap(oldObj.toMap());
			//map.put("_id", new ObjectId(map.get("_id")));
			
			ObjectId id = new ObjectId(map.get("_id"));
			BasicDBObject newObj = new BasicDBObject(map);
			newObj.append("_id", id);
                        newObj.append("con", Integer.parseInt(map.get("con")));
			newObj.append("ty", Integer.parseInt(map.get("ty")));
			newObj.append("st", Integer.parseInt(map.get("st")));
			newObj.append("cs", Integer.parseInt(map.get("cs")));
			
			String lbl_tmp = map.get("lbl");
			Gson gson = new Gson();
			String[] lbl_json = gson.fromJson(lbl_tmp ,String[].class);
			
			newObj.append("lbl", lbl_json);

			BasicDBObject updateObj = new BasicDBObject();
			updateObj.put("$set", newObj);

			table.update(oldObj, updateObj);
		}

makeStringMap함수

public Map<String,String> makeStringMap(Map<String, String> map) {
		Map<String, String> newMap = new HashMap<String, String>();
		
    	Set<String> entry = map.keySet();
    	Iterator<String> itr = entry.iterator();
    	
    	while(itr.hasNext()) {
    		String key = String.valueOf(itr.next());
    		//System.out.println("key : "+key);
    		String value = String.valueOf(map.get(key));
    		//System.out.println("value : "+value);
    		
    		newMap.put(key, value);
    	}
    	
	    return newMap;
	}