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MongoDB Basics

Local server: Initial Setup

  • install from the command line
msiexec.exe /q /i mongodb-win32-x86_64-2.6.11-signed.msi INSTALLLOCATION="C:\mongodb" ADDLOCAL="all"
  • create a config and disable authentication: mongo.conf
#auth=true
dbpath=C:\data
logpath=C:\log\mongo.log
  • create the log and data directory as desicribed in the config file (otherwise mongo throws an error on startup)
  • start server using the config
mongod --config C:\mongodb\mongo.conf
  • connect using the mongo client
mongo admin
  • create the first user
db.createUser({"user":"usernamexxxx", "pwd":"passwordxxxx", "roles":[{"role":"dbOwner", "db":"mydatabase"}]});
  • shutdown the server and change the config file
#auth=true
dbpath=C:\data
logpath=C:\log\mongo.log

Connecting to the Database

  • From Command line
mongo localhost:27017/mydatabase --username usernamexxxx --password passwordxxxx --authenticationDatabase admin
  • Java Driver
MongoCredential credential = MongoCredential.createMongoCRCredential("usernamexxxx", "admin", "passwordxxxx".toCharArray());
MongoClient mongoClient = new MongoClient(new ServerAddress("localhost", 27017), Arrays.asList(credential));
MongoDatabase db = mongoClient.getDatabase("mydatabase");

//do your thing here...

mongoClient.close();
  • Morphia
@Entity
public class MyCollection {

	@Id
	private ObjectId id;

	private String name;
	private int age;
	
	//getters/setters...

}

MongoClient client = ...
Morphia morphia = new Morphia(); // takes care of the mapping and stuffs
Datastore ds = morphia.createDatastore(client, "mydatabase");