Read from MongoDB - Java Big Data

Java examples for Big Data:MongoDB

  1. HOME
  2. Java
  3. Big Data
  4. MongoDB

Description

Read from MongoDB

Demo Code


import java.io.IOException;
import java.net.UnknownHostException;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.PropertiesCredentials;
import com.amazonaws.services.dynamodb.AmazonDynamoDBClient;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.Mongo;
import com.mongodb.MongoException;

public class MongotoDynamo {

    static AmazonDynamoDBClient dynamoDB;

    public static void main(String[] args) throws IOException {
        init();//from w w w  . j a  va  2  s.  c o m
        readfromMongo();
    }


    private static void readfromMongo() throws UnknownHostException,
            MongoException {
        // TODO Auto-generated method stub
        Mongo mongo;
        mongo = new Mongo("10.3.4.84", 27017);
        mongo.getDB("db").authenticate("cssc", new char[] { '1' });
        DB db = mongo.getDB("db");
        String[] collectionnames = (String[]) db.getCollectionNames()
                .toArray();
        for (int i = 0; i < collectionnames.length; i++) {
            System.out.println("Name of Collection: " + collectionnames[i]);
            DBCollection collection = db.getCollection(collectionnames[i]);

        }
    }

    private static void init() throws IOException {
        AWSCredentials credentials = new PropertiesCredentials(
                MongotoDynamo.class
                        .getResourceAsStream("AwsCredentials.properties"));

        dynamoDB = new AmazonDynamoDBClient(credentials);
    }

}

Related Tutorials