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MongoDB\Driver\Server::executeReadWriteCommand

(mongodb >=1.4.0)

MongoDB\Driver\Server::executeReadWriteCommandExecute a database command that reads and writes on this server

Beschreibung

final public MongoDB\Driver\Server::executeReadWriteCommand(string $db, MongoDB\Driver\Command $command, ?array $options = null): MongoDB\Driver\Cursor

Executes the command on this server.

This method will apply logic that is specific to commands that read and write (e.g. » aggregate). Default values for the "readConcern" and "writeConcern" options will be inferred from an active transaction (indicated by the "session" option), followed by the connection URI.

Parameter-Liste

db (string)

The name of the database on which to execute the command.

command (MongoDB\Driver\Command)

The command to execute.

options

options
Option Type Description
readConcern MongoDB\Driver\ReadConcern

A read concern to apply to the operation.

This option is available in MongoDB 3.2+ and will result in an exception at execution time if specified for an older server version.

session MongoDB\Driver\Session

A session to associate with the operation.

writeConcern MongoDB\Driver\WriteConcern

A write concern to apply to the operation.

Warnung

If you are using a "session" which has a transaction in progress, you cannot specify a "readConcern" or "writeConcern" option. This will result in an MongoDB\Driver\Exception\InvalidArgumentException being thrown. Instead, you should set these two options when you create the transaction with MongoDB\Driver\Session::startTransaction().

Rückgabewerte

Gibt bei Erfolg einen MongoDB\Driver\Cursor zurück.

Fehler/Exceptions

Changelog

Version Beschreibung
PECL mongodb 1.4.4 MongoDB\Driver\Exception\InvalidArgumentException will be thrown if the "session" option is used in combination with an unacknowledged write concern.

Anmerkungen

Hinweis: Es liegt in der Verantwortung des aufrufenden Codes, sicherzustellen, dass der Server in der Lage ist, den Schreibvorgang auszuführen. So schlägt beispielsweise die Ausführung eines Schreibvorgangs auf einem sekundären Server (mit Ausnahme seiner "lokalen" Datenbank) fehl.

Siehe auch

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