Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.bigdid.model; import com.mongodb.DB; import com.mongodb.DBCollection; import com.mongodb.DBCursor; import com.mongodb.DBObject; import com.mongodb.MongoClient; import java.net.UnknownHostException; import java.util.HashMap; import java.util.LinkedHashMap; /** * * @author tanmay */ public class Sentiment_Week_Revised_one { private static MongoClient dbClient = DBFactory.getDbClient(); private static DB db = dbClient.getDB("firstdb"); private static DBCollection coll; LinkedHashMap<String, int[]> data = new LinkedHashMap<>(); HashMap<String, int[]> data1 = new HashMap<>(); public Sentiment_Week_Revised_one() throws UnknownHostException { coll = db.getCollection("sentiment_order_weeks"); } public LinkedHashMap<String, int[]> getSentiment() { DBCursor obj = coll.find(); String current_date = "0"; String prev_date = "0"; int prev_positive = 0; while (obj.hasNext()) { DBObject dbObj = obj.next(); prev_date = current_date; current_date = (String) dbObj.get("week"); int[] count = new int[3]; if (prev_date.equals(current_date)) { //current day is previous day so negative sentiment for sure count[0] = (Integer) dbObj.get("o_count"); count[1] = prev_positive; count[2] = (Integer) dbObj.get("s_count"); data.put(current_date, count); } else { //new day---- 2 cases positive or negative if (dbObj.get("sentiment").equals("positive")) { count[0] = (Integer) dbObj.get("o_count"); count[1] = (Integer) dbObj.get("s_count"); ; count[2] = 0; data.put(current_date, count); prev_positive = count[1]; } if (dbObj.get("sentiment").equals("negative")) { //first date is negative count[0] = (Integer) dbObj.get("o_count"); count[1] = 0; count[2] = (Integer) dbObj.get("s_count"); data.put(current_date, count); } } } return data; } }