Examples of com.mongodb.Mongo

com.mongodb.Mongo
ongodb.org/display/DOCS/Java+Driver+Concurrency
Connecting to a Replica Pair

You can connect to a replica pair using the Java driver by passing two DBAddresses to the Mongo constructor. For example:
```
 DBAddress left = new DBAddress("127.0.0.1:27017/test"); DBAddress right = new DBAddress("127.0.0.1:27018/test"); Mongo mongo = new Mongo(left, right); 
```
If the master of a replica pair goes down, there will be a brief lag before the slave becomes master. Thus, your application should be prepared to catch the exceptions that might be thrown in such a case: IllegalArgumentException, MongoException, and MongoException.Network (depending on when the connection drops).

Once the slave becomes master, the driver will begin using that connection as the master connection and the exceptions will stop being thrown.

Connecting to a Replica Set

You can connect to a replica set using the Java driver by passing several a list if ServerAddress to the Mongo constructor. For example:
```
 List addrs = new ArrayList(); addrs.add( new ServerAddress( "127.0.0.1" , 27017 ) ); addrs.add( new ServerAddress( "127.0.0.1" , 27018 ) ); addrs.add( new ServerAddress( "127.0.0.1" , 27019 ) ); Mongo mongo = new Mongo( addrs ); 
```
By default, all read and write operations will be made on the master. But it's possible to read from the slave(s) by using slaveOk:
```
 mongo.slaveOk(); 
```

    
    public TestMongoDbAppender()
        throws Exception
    {
        PropertyConfigurator.configure(LOG4J_PROPS);
        mongo    = new Mongo(TEST_MONGO_SERVER_HOSTNAME, TEST_MONGO_SERVER_PORT);
        appender = (MongoDbAppender)Logger.getRootLogger().getAppender(MONGODB_APPENDER_NAME);
    }

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    @BeforeClass
    public static void setUpBeforeClass() throws Exception
    {
      Mongo mongo = new Mongo(TEST_MONGO_SERVER_HOSTNAME, TEST_MONGO_SERVER_PORT);
      mongo.dropDatabase(TEST_DATABASE_NAME);
    }

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    @AfterClass
    public static void tearDownAfterClass() throws Exception
    {
      Mongo mongo = new Mongo(TEST_MONGO_SERVER_HOSTNAME, TEST_MONGO_SERVER_PORT);
      mongo.dropDatabase(TEST_DATABASE_NAME);
    }

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    private final Mongo mongo;
    private DBCollection collection;


    public TestMongoDbAppenderAuth() throws Exception
    {
        mongo = new Mongo(TEST_MONGO_SERVER_HOSTNAME, TEST_MONGO_SERVER_PORT);
    }

View Full Code Here

    }


    @BeforeClass
    public static void setUpBeforeClass() throws Exception
    {
        Mongo mongo = new Mongo(TEST_MONGO_SERVER_HOSTNAME,
                TEST_MONGO_SERVER_PORT);
        mongo.dropDatabase(TEST_DATABASE_NAME);
    }

View Full Code Here

    }


    @AfterClass
    public static void tearDownAfterClass() throws Exception
    {
        Mongo mongo = new Mongo(TEST_MONGO_SERVER_HOSTNAME,
                TEST_MONGO_SERVER_PORT);
        mongo.dropDatabase(TEST_DATABASE_NAME);
    }

View Full Code Here

        ServerAddress serverAddr = (dbConnectionSettings.getPort()!=null)
          ? new ServerAddress(dbConnectionSettings.getHostname(), dbConnectionSettings.getPort().intValue())
          : new ServerAddress(dbConnectionSettings.getHostname());


        // get Mongo
        Mongo mongo = (dbConnectionSettings.getOptions()!=null)
        ? new Mongo(serverAddr, dbConnectionSettings.getOptions())
        : new Mongo(serverAddr);
        
        // we're good :)
        return mongo;
    }

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    public void executeInternal() 
        throws MojoExecutionException, 
        MojoFailureException {
        
        try {
            Mongo mongo = openConnection();
            DB db = getDatabase(mongo);
            for (int i=0; i<dbCreateScriptsDirectory.length; i++) {
                executeScriptsInDirectory(
                  dbCreateScriptsDirectory[i], db);
            }

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    public void executeInternal() 
        throws MojoExecutionException, 
        MojoFailureException {
        
        try {
            Mongo mongo = openConnection();
            DB db = getDatabase(mongo);
            for (int i=0; i<dbUpdateScriptsDirectory.length; i++) {
                executeScriptsInDirectory(
                  dbUpdateScriptsDirectory[i], db);
            }

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        if (_collection != null) return _collection;


        synchronized(sMutex) {
            if (_collection != null) return _collection;


            _mongo = new Mongo(new MongoURI(_mongoUri));


            final DB db = _mongo.getDB(_databaseName);


            _collection = _mongo.getDB(_databaseName).getCollection(_collectionName);

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Examples of com.mongodb.Mongo

Connecting to a Replica Pair

Connecting to a Replica Set

Related Classes of com.mongodb.Mongo