MongoDB\Driver\Server::executeCommand

(mongodb >=1.0.0)

MongoDB\Driver\Server::executeCommandExecute a database command on this server

Описание

final public MongoDB\Driver\Cursor MongoDB\Driver\Server::executeCommand ( string $db , MongoDB\Driver\Command $command [, MongoDB\Driver\ReadPreference $readPreference ] )

Executes command on this server.

Замечание:

The readPreference parameter does not control the server to which the driver issues the command; the command will always be executed on this server object. Instead, it may be used when issuing the command to a secondary (from a replica set connection, not standalone) or mongos node to ensure that the driver sets the wire protocol accordingly or adds the read preference to the command document, respectively.

Список параметров

db (string)

Имя базы данных, в которой запускается комманда.

command (MongoDB\Driver\Command)

MongoDB\Driver\Command для выполнения.

readPreference (MongoDB\Driver\ReadPreference)

Опционально MongoDB\Driver\ReadPreference для выбора сервера для этой операции. Если не задано, то он будет выбран из URI соединения MongoDB.

Возвращаемые значения

В случае успеха возвращает MongoDB\Driver\Cursor.

Ошибки

Примечания

Замечание:

This method does not take a MongoDB\Driver\WriteConcern parameter. For write commands (e.g. » findAndModify in MongoDB 3.2+), the write concern should be included in the command document itself.

It is the caller's responsibility to ensure that the server is capable of executing the command. For example, executing a write operation on a secondary (excluding its "local" database) will fail.