(mongodb >=1.0.0)
MongoDB\Driver\Server::executeCommand — Execute a database command on this server
$db
, MongoDB\Driver\Command $command
[, MongoDB\Driver\ReadPreference $readPreference
] )
Executes command on this server.
Замечание:
The
readPreferenceparameter 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.
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.
В случае успеха возвращает MongoDB\Driver\Cursor.
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
commanddocument 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.