com.terkaly.JavaMongoDB.App.java Source code

Introduction

Here is the source code for com.terkaly.JavaMongoDB.App.java

Source

// MIT License Copyright (c) 2016 Bruno Terkaly
// Open sourcing my code for my O'Reilly course.
// Cloud-Based Provisioning, Storage, and Data Retrieval with Java and Linux
// Learn more here http://bit.ly/bruno-does-linux-data-java
package com.terkaly.JavaMongoDB;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import com.mongodb.WriteConcern;
import com.google.gson.Gson;

public class App {
    public static void main(String[] args) {
        try {
            // Create a connection using mongoClient
            // 23.99.88.154 is obtained from the portal
            MongoClient mongoClient = new MongoClient("[ put your ip address here ]", 27017);

            // Get a connection to mydb
            DB db = mongoClient.getDB("mydb");

            // mydb has one or more collections, get "testCollection"
            DBCollection collection = db.getCollection("testCollection");

            // Create an empty object
            BasicDBObject empty = new BasicDBObject();

            // Clear out testCollection
            collection.remove(empty);

            // Acknowledges the write operation only
            // after committing the data to the journal
            mongoClient.setWriteConcern(WriteConcern.JOURNALED);

            // Here is the data format in JSON
            // {
            //   "name": "MongoDB",
            //   "type": "database",
            //   "count": 1,
            //   "info": {
            //         "x": 203,
            //         "y": 102
            //    }
            // }

            BasicDBObject doc = new BasicDBObject("name", "MongoDB").append("type", "database").append("count", 1)
                    .append("info", new BasicDBObject("x", 203).append("y", 102));
            collection.insert(doc);

            DBObject myDoc = collection.findOne();
            System.out.println(myDoc);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}