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(); 
```

        properties = new Properties();
        InputStream is = MongoDbConversionsTest.class.getResourceAsStream("/mongodb.test.properties");
        properties.load(is);
        // ping Mongo and populate db and collection
        try {
            mongo = new Mongo(new MongoURI(properties.getProperty("mongodb.connectionURI")));
            mongo.getDatabaseNames();
            dbName = properties.getProperty("mongodb.testDb");
            db = mongo.getDB(dbName);
        } catch (Exception e) {
            Assume.assumeNoException(e);

View Full Code Here


    /**
     * Should access a singleton of type Mongo
     */
    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
        Mongo db = CamelContextHelper.mandatoryLookup(getCamelContext(), remaining, Mongo.class);


        Endpoint endpoint = new MongoDbEndpoint(uri, this);
        parameters.put("mongoConnection", db);
        setProperties(endpoint, parameters);

View Full Code Here

    public static UpdateableDataContext createMongoDbDataContext(String hostname, Integer port, String databaseName,
            String username, char[] password, SimpleTableDef[] tableDefs) {
        try {
            DB mongoDb;
            if (port == null) {
                mongoDb = new Mongo(hostname).getDB(databaseName);
            } else {
                mongoDb = new Mongo(hostname, port).getDB(databaseName);
            }
            if (username != null) {
                mongoDb.authenticate(username, password);
            }

View Full Code Here

                NucleusLogger.CONNECTION.debug(LOCALISER.msg("MongoDB.ServerConnect", dbName, serverAddrs.size(),
                    StringUtils.collectionToString(serverAddrs)));
            }
            if (serverAddrs.size() == 1)
            {
                mongo = new Mongo(serverAddrs.get(0));
            }
            else
            {
                mongo = new Mongo(serverAddrs);
            }
        }
        catch (UnknownHostException e)
        {
            throw new NucleusDataStoreException("Unable to connect to mongodb", e);

View Full Code Here

        properties = new Properties();
        InputStream is = MongoDbConversionsTest.class.getResourceAsStream("/mongodb.test.properties");
        properties.load(is);
        // ping Mongo and populate db and collection
        try {
            mongo = new Mongo(new MongoURI(properties.getProperty("mongodb.connectionURI")));
            mongo.getDatabaseNames();
            dbName = properties.getProperty("mongodb.testDb");
            db = mongo.getDB(dbName);
        } catch (Exception e) {
            Assume.assumeNoException(e);

View Full Code Here

    }


    public static Operation putDatabaseDetails(Operation op, DB db) {
        op.put("dbName", db.getName());


        Mongo mongo = db.getMongo();
        ServerAddress address = mongo.getAddress();
        op.put("host", address.getHost());
        op.put("port", address.getPort());
        return op;
    }

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        assertEquals(MongoDBCollectionExternalResourceAnalyzer.TYPE, op.getType());
        assertEquals("my_super_collection.hello", op.get("collection"));
    }


    private DBCollection getMeACollection() {
        Mongo mongo = mock(Mongo.class);
        DB db = new DBDummy(mongo, "my_super_collection");


        DBCollection col = new DBCollectionDummy(db, "hello");
        return col;
    }

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    @SuppressWarnings("boxing")
    @Test
    public void testDbCommandWithHost() throws Exception {
        final String HOST = "7.3.6.5";
        final int PORT = 27017;
        Mongo mongo = mock(Mongo.class);
        ServerAddress address = mock(ServerAddress.class);
        when(address.getHost()).thenReturn(HOST);
        when(address.getPort()).thenReturn(PORT);
        when(mongo.getAddress()).thenReturn(address);


        Operation op = assertCommandOperation(new DBDummy(mongo, "testDbCommandWithHost"));
        assertEquals("Mismatched host", HOST, op.get("host", String.class));
        assertEquals("Mismatched port", 27017, op.getInt("port", (-1)));
    }

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        assertEquals("Mismatched port", 27017, op.getInt("port", (-1)));
    }


    @Test
    public void testDbCommandNoHost() throws Exception {
        Mongo mongo = mock(Mongo.class);
        Operation op = assertCommandOperation(new DBDummy(mongo, "testDbCommandNoHost"));


        for (String key : new String[]{"host", "port"}) {
            assertNullValue("Unexpected value for " + key, op.get(key));
        }

View Full Code Here

     * @param port The port.
     * @param database The database name.
     * @throws Exception If an error occurred while trying to connect.
     */
    public MongoConnection(String host, int port, String database) throws Exception {
        db = new Mongo(host, port).getDB(database);
        gridFS = new GridFS(db);
    }

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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