The MongoDB\Driver\Manager class

(mongodb >=1.0.0)

はじめに

The MongoDB\Driver\Manager is the main entry point to the extension. It is responsible for maintaining connections to MongoDB (be it standalone server, replica set, or sharded cluster).

No connection to MongoDB is made upon instantiating the Manager. This means the MongoDB\Driver\Manager can always be constructed, even though one or more MongoDB servers are down.

Any write or query can throw connection exceptions as connections are created lazily. A MongoDB server may also become unavailable during the life time of the script. It is therefore important that all actions on the Manager to be wrapped in try/catch statements.

クラス概要

final class MongoDB\Driver\Manager {
/* メソッド */
final public addSubscriber(MongoDB\Driver\Monitoring\Subscriber $subscriber): void
final public __construct(string $uri = "mongodb://127.0.0.1/", array $uriOptions = array(), array $driverOptions = array())
final public createClientEncryption(array $options): MongoDB\Driver\ClientEncryption
final public executeBulkWrite(string $namespace, MongoDB\Driver\BulkWrite $bulk, array $options = array()): MongoDB\Driver\WriteResult
final public executeCommand(string $db, MongoDB\Driver\Command $command, array $options = array()): MongoDB\Driver\Cursor
final public executeQuery(string $namespace, MongoDB\Driver\Query $query, array $options = array()): MongoDB\Driver\Cursor
final public executeReadCommand(string $db, MongoDB\Driver\Command $command, array $options = array()): MongoDB\Driver\Cursor
final public executeReadWriteCommand(string $db, MongoDB\Driver\Command $command, array $options = array()): MongoDB\Driver\Cursor
final public executeWriteCommand(string $db, MongoDB\Driver\Command $command, array $options = array()): MongoDB\Driver\Cursor
final public getEncryptedFieldsMap(): array|object|null
final public getReadConcern(): MongoDB\Driver\ReadConcern
final public getReadPreference(): MongoDB\Driver\ReadPreference
final public getServers(): array
final public getWriteConcern(): MongoDB\Driver\WriteConcern
final public removeSubscriber(MongoDB\Driver\Monitoring\Subscriber $subscriber): void
final public selectServer(?MongoDB\Driver\ReadPreference $readPreference = null): MongoDB\Driver\Server
final public startSession(array $options = ?): MongoDB\Driver\Session
}

例

例1 MongoDB\Driver\Manager::__construct() basic example

var_dump()ing a MongoDB\Driver\Manager will print out various details about the manager that are otherwise not normally exposed. This can be useful to debug how the driver views your MongoDB setup, and which options are used.

<?php

$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
var_dump($manager);

?>

上の例の出力は、 たとえば以下のようになります。

object(MongoDB\Driver\Manager)#1 (2) {
  ["uri"]=>
  string(26) "mongodb://127.0.0.1:27017/"
  ["cluster"]=>
  array(0) {
  }
}

目次

関連キーワード: 　Driver, Manager, array, final, public, string, command, Execute, database, Cursor