MongoDB\Driver\Session::startTransaction

(mongodb >=1.5.0)

MongoDB\Driver\Session::startTransaction — Starts a transaction

Beschreibung

final public MongoDB\Driver\Session::startTransaction(array $options = ?): void

Starts a multi-document transaction associated with the session. At any given time, you can have at most one open transaction for a session. After starting a transaction, the session object must be passed to each operation via the "session" option (e.g. MongoDB\Driver\Manager::executeBulkWrite()) in order to associate that operation with the transaction.

Transactions can be committed through MongoDB\Driver\Session::commitTransaction(), and aborted with MongoDB\Driver\Session::abortTransaction(). Transactions are also automatically aborted when the session is closed from garbage collection or by explicitly calling MongoDB\Driver\Session::endSession().

Parameter-Liste

options

Options can be passed as argument to this method. Each element in this options array overrides the corresponding option from the "defaultTransactionOptions" option, if set when starting the session with MongoDB\Driver\Manager::startSession().

**options**
Option	Type	Description
maxCommitTimeMS	integer	Die maximale Dauer in Millisekunden, die ein einziger `commitTransaction`-Befehl beanspruchen darf. Wenn angegeben, muss `maxCommitTimeMS` eine vorzeichenbehaftete 32-bit Ganzzahl größer als oder gleich Null sein.
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.
readPreference	MongoDB\Driver\ReadPreference	A read preference to use for selecting a server for the operation.
writeConcern	MongoDB\Driver\WriteConcern	A write concern to apply to the operation.

Rückgabewerte

Es wird kein Wert zurückgegeben.

Fehler/Exceptions

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Throws MongoDB\Driver\Exception\CommandException if the transaction could not be started because of a server-side problem (e.g. a lock could not be obtained).
Throws MongoDB\Driver\Exception\RuntimeException if the transaction could not be started (e.g. a transaction was already started).