Update fixed number of MongoDB records with batchId

gistfile1.java

public class UpdateMongoBatchId {
	public static void main(String[] args) {
		Integer batchId = new Integer(args[0]);
		
		try {
			Mongo mongo = new Mongo("10.x.x.x", 27017);
			DB db = mongo.getDB("dbname");
			DBCollection coll1 = db.getCollection("collname");
		
			// MongoDB find conditions
			BasicDBObject searchQuery = new BasicDBObject();
			searchQuery.put("batchId", null);
			BasicDBObject searchFields = new BasicDBObject();
			BasicDBObject sortOrder = new BasicDBObject();
			sortOrder.put("systemTime", 1);
			
			DBObject currDocument;
			
			DBCursor cursor = coll1.find(searchQuery).sort(sortOrder).limit(MongoVariables.BATCH_SIZE);
			try {
				while (cursor.hasNext()) {
					currDocument = cursor.next();
					currDocument.put("batchId", batchId);
					coll1.save(currDocument);
				}

			} catch (Exception e) {
				// TODO: handle exception
			} finally { 
				cursor.close();
			}
			System.out.println("Updated batchId to MongoDB");
		} catch (Exception e) {
			// TODO: handle exception
		} finally {
			if (mongo != null) {
				mongo.close();
			}
		}
	}
}