public class MongoClient extends Mongo implements Closeable
A MongoDB client with internal connection pooling. For most applications, you should have one MongoClient instance for the entire JVM.
The following are equivalent, and all connect to the local database running on the default port:
MongoClient mongoClient1 = new MongoClient();
MongoClient mongoClient1 = new MongoClient("localhost");
MongoClient mongoClient2 = new MongoClient("localhost", 27017);
MongoClient mongoClient4 = new MongoClient(new ServerAddress("localhost"));
MongoClient mongoClient5 = new MongoClient(new ServerAddress("localhost"), new MongoClientOptions.Builder().build());
You can connect to a replica set using the Java driver by passing a ServerAddress list to the MongoClient constructor. For example:
MongoClient mongoClient = new MongoClient(Arrays.asList(
new ServerAddress("localhost", 27017),
new ServerAddress("localhost", 27018),
new ServerAddress("localhost", 27019)));
You can connect to a sharded cluster using the same constructor. MongoClient will auto-detect whether the servers are a list of replica set members or a list of mongos servers.
By default, all read and write operations will be made on the primary, but it's possible to read from secondaries by changing the read preference:
mongoClient.setReadPreference(ReadPreference.secondaryPreferred());
By default, all write operations will wait for acknowledgment by the server, as the default write concern is WriteConcern.ACKNOWLEDGED.
Note: This class supersedes the Mongo class. While it extends Mongo, it differs from it in that the default write
concern is to wait for acknowledgment from the server of all write operations. In addition, its constructors accept instances of MongoClientOptions and MongoClientURI, which both also set the same default write concern.
In general, users of this class will pick up all of the default options specified in MongoClientOptions. In particular, note
that the default value of the connectionsPerHost option has been increased to 100 from the old default value of 10 used by the superseded
Mongo class.
ReadPreference.primary(),
WriteConcern.ACKNOWLEDGED,
MongoClientOptions,
MongoClientURIMongo.Holder| Constructor and Description |
|---|
MongoClient()
Creates an instance based on a (single) mongodb node (localhost, default port).
|
MongoClient(List<ServerAddress> seeds)
Creates an instance based on a list of replica set members or mongos servers.
|
MongoClient(List<ServerAddress> seeds,
List<MongoCredential> credentialsList)
Creates an instance based on a list of replica set members or mongos servers.
|
MongoClient(List<ServerAddress> seeds,
List<MongoCredential> credentialsList,
MongoClientOptions options)
Creates an instance based on a list of replica set members or mongos servers.
|
MongoClient(List<ServerAddress> seeds,
List<MongoCredential> credentialsList,
MongoClientOptions options,
MongoDriverInformation mongoDriverInformation)
Creates a MongoClient
|
MongoClient(List<ServerAddress> seeds,
MongoClientOptions options)
Construct an instance based on a list of replica set members or mongos servers.
|
MongoClient(MongoClientURI uri)
Creates a Mongo described by a URI.
|
MongoClient(MongoClientURI uri,
MongoDriverInformation mongoDriverInformation)
Creates a Mongo described by a URI.
|
MongoClient(ServerAddress addr)
Creates a Mongo instance based on a (single) mongodb node
|
MongoClient(ServerAddress addr,
List<MongoCredential> credentialsList)
Creates a Mongo instance based on a (single) mongodb node and a list of credentials
|
MongoClient(ServerAddress addr,
List<MongoCredential> credentialsList,
MongoClientOptions options)
Creates a Mongo instance based on a (single) mongo node using a given ServerAddress and default options.
|
MongoClient(ServerAddress addr,
List<MongoCredential> credentialsList,
MongoClientOptions options,
MongoDriverInformation mongoDriverInformation)
Creates a MongoClient to a single node using a given ServerAddress.
|
MongoClient(ServerAddress addr,
MongoClientOptions options)
Creates a Mongo instance based on a (single) mongo node using a given ServerAddress and default options.
|
MongoClient(String host)
Creates a Mongo instance based on a (single) mongodb node.
|
MongoClient(String host,
int port)
Creates a Mongo instance based on a (single) mongodb node.
|
MongoClient(String host,
MongoClientOptions options)
Creates a Mongo instance based on a (single) mongodb node (default port).
|
| Modifier and Type | Method and Description |
|---|---|
List<MongoCredential> |
getCredentialsList()
Gets the list of credentials that this client authenticates all connections with
|
MongoDatabase |
getDatabase(String databaseName) |
static CodecRegistry |
getDefaultCodecRegistry()
Gets the default codec registry.
|
MongoClientOptions |
getMongoClientOptions()
Gets the options that this client uses to connect to server.
|
MongoIterable<String> |
listDatabaseNames()
Get a list of the database names
|
ListDatabasesIterable<Document> |
listDatabases()
Gets the list of databases
|
<T> ListDatabasesIterable<T> |
listDatabases(Class<T> clazz)
Gets the list of databases
|
addOption, close, dropDatabase, fsync, fsyncAndLock, getAddress, getAllAddress, getConnectPoint, getDatabaseNames, getDB, getMaxBsonObjectSize, getMongoOptions, getOptions, getReadConcern, getReadPreference, getReplicaSetStatus, getServerAddressList, getUsedDatabases, getWriteConcern, isLocked, resetOptions, setOptions, setReadPreference, setWriteConcern, slaveOk, toString, unlockpublic MongoClient()
public MongoClient(String host)
host - server to connect to in format host[:port]public MongoClient(String host, MongoClientOptions options)
host - server to connect to in format host[:port]options - default query optionspublic MongoClient(String host, int port)
host - the database's host addressport - the port on which the database is runningpublic MongoClient(ServerAddress addr)
addr - the database addressServerAddresspublic MongoClient(ServerAddress addr, List<MongoCredential> credentialsList)
addr - the database addresscredentialsList - the list of credentials used to authenticate all connectionsServerAddresspublic MongoClient(ServerAddress addr, MongoClientOptions options)
addr - the database addressoptions - default optionsServerAddresspublic MongoClient(ServerAddress addr, List<MongoCredential> credentialsList, MongoClientOptions options)
addr - the database addresscredentialsList - the list of credentials used to authenticate all connectionsoptions - default optionsServerAddresspublic MongoClient(List<ServerAddress> seeds)
Creates an instance based on a list of replica set members or mongos servers. For a replica set it will discover all members.
For a list with a single seed, the driver will still discover all members of the replica set. For a direct
connection to a replica set member, with no discovery, use the MongoClient(ServerAddress) constructor instead.
When there is more than one server to choose from based on the type of request (read or write) and the read preference (if it's a
read request), the driver will randomly select a server to send a request. This applies to both replica sets and sharded clusters.
The servers to randomly select from are further limited by the local threshold. See
MongoClientOptions.getLocalThreshold()
seeds - Put as many servers as you can in the list and the system will figure out the rest. This can either be a list of mongod
servers in the same replica set or a list of mongos servers in the same sharded cluster.MongoClientOptions.getLocalThreshold()public MongoClient(List<ServerAddress> seeds, List<MongoCredential> credentialsList)
Creates an instance based on a list of replica set members or mongos servers. For a replica set it will discover all members.
For a list with a single seed, the driver will still discover all members of the replica set. For a direct
connection to a replica set member, with no discovery, use the MongoClient(ServerAddress, List)
constructor instead.
When there is more than one server to choose from based on the type of request (read or write) and the read preference (if it's a
read request), the driver will randomly select a server to send a request. This applies to both replica sets and sharded clusters.
The servers to randomly select from are further limited by the local threshold. See
MongoClientOptions.getLocalThreshold()
seeds - Put as many servers as you can in the list and the system will figure out the rest. This can either be a list of mongod
servers in the same replica set or a list of mongos servers in the same sharded cluster.credentialsList - the list of credentials used to authenticate all connectionsMongoClientOptions.getLocalThreshold()public MongoClient(List<ServerAddress> seeds, MongoClientOptions options)
Construct an instance based on a list of replica set members or mongos servers. For a replica set it will discover all members.
For a list with a single seed, the driver will still discover all members of the replica set. For a direct
connection to a replica set member, with no discovery, use the MongoClient(ServerAddress, MongoClientOptions) constructor
instead.
When there is more than one server to choose from based on the type of request (read or write) and the read preference (if it's a
read request), the driver will randomly select a server to send a request. This applies to both replica sets and sharded clusters.
The servers to randomly select from are further limited by the local threshold. See
MongoClientOptions.getLocalThreshold()
seeds - Put as many servers as you can in the list and the system will figure out the rest. This can either be a list of mongod
servers in the same replica set or a list of mongos servers in the same sharded cluster.options - the optionsMongoClientOptions.getLocalThreshold()public MongoClient(List<ServerAddress> seeds, List<MongoCredential> credentialsList, MongoClientOptions options)
Creates an instance based on a list of replica set members or mongos servers. For a replica set it will discover all members.
For a list with a single seed, the driver will still discover all members of the replica set. For a direct
connection to a replica set member, with no discovery, use the MongoClient(ServerAddress, List, MongoClientOptions)
constructor instead.
When there is more than one server to choose from based on the type of request (read or write) and the read preference (if it's a
read request), the driver will randomly select a server to send a request. This applies to both replica sets and sharded clusters.
The servers to randomly select from are further limited by the local threshold. See
MongoClientOptions.getLocalThreshold()
seeds - Put as many servers as you can in the list and the system will figure out the rest. This can either be a list of mongod
servers in the same replica set or a list of mongos servers in the same sharded cluster.credentialsList - the list of credentials used to authenticate all connectionsoptions - the optionsMongoClientOptions.getLocalThreshold()public MongoClient(MongoClientURI uri)
uri - the URIMongoException - if theres a failurepublic MongoClient(MongoClientURI uri, MongoDriverInformation mongoDriverInformation)
Note: Intended for driver and library authors to associate extra driver metadata with the connections.
uri - the URImongoDriverInformation - any driver information to associate with the MongoClientMongoException - if theres a failurepublic MongoClient(ServerAddress addr, List<MongoCredential> credentialsList, MongoClientOptions options, MongoDriverInformation mongoDriverInformation)
Note: Intended for driver and library authors to associate extra driver metadata with the connections.
addr - the database addresscredentialsList - the list of credentials used to authenticate all connectionsoptions - default optionsmongoDriverInformation - any driver information to associate with the MongoClientServerAddresspublic MongoClient(List<ServerAddress> seeds, List<MongoCredential> credentialsList, MongoClientOptions options, MongoDriverInformation mongoDriverInformation)
Note: Intended for driver and library authors to associate extra driver metadata with the connections.
seeds - Put as many servers as you can in the list and the system will figure out the rest. This can either be a list of mongod
servers in the same replica set or a list of mongos servers in the same sharded cluster.credentialsList - the list of credentials used to authenticate all connectionsoptions - the optionsmongoDriverInformation - any driver information to associate with the MongoClientpublic static CodecRegistry getDefaultCodecRegistry()
MongoClientOptions.getCodecRegistry()public MongoClientOptions getMongoClientOptions()
Note: MongoClientOptions is immutable.
public List<MongoCredential> getCredentialsList()
public MongoIterable<String> listDatabaseNames()
public ListDatabasesIterable<Document> listDatabases()
public <T> ListDatabasesIterable<T> listDatabases(Class<T> clazz)
T - the type of the class to use instead of Document.clazz - the class to cast the database documents topublic MongoDatabase getDatabase(String databaseName)
databaseName - the name of the database to retrieveMongoDatabase representing the specified databaseIllegalArgumentException - if databaseName is invalidMongoNamespace.checkDatabaseNameValidity(String)