MongoDB\Driver\Manager::selectServer

(mongodb >=1.0.0)

MongoDB\Driver\Manager::selectServer — Select a server matching a read preference

Descrizione

final public MongoDB\Driver\Manager::selectServer(?MongoDB\Driver\ReadPreference $readPreference = null): MongoDB\Driver\Server

Selects a MongoDB\Driver\Server matching readPreference. If readPreference is null or omitted, the primary server will be selected by default. This may be used to preselect a server in order to perform version checking before executing an operation.

Nota: Unlike MongoDB\Driver\Manager::getServers(), this method will initialize database connections and perform server discovery if necessary. See the » Server Selection Specification for additional information.

Elenco dei parametri

readPreference (MongoDB\Driver\ReadPreference): The read preference to use for selecting a server. If null or omitted, the primary server will be selected by default.

Valori restituiti

Returns a MongoDB\Driver\Server matching the read preference.

Errori/Eccezioni

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Throws MongoDB\Driver\Exception\ConnectionException if connection to the server fails (for reasons other than authentication).
Throws MongoDB\Driver\Exception\AuthenticationException if authentication is needed and fails.
Throws MongoDB\Driver\Exception\RuntimeException if a server matching the read preference could not be found.

Log delle modifiche

Versione	Descrizione
PECL mongodb 1.11.0	The `readPreference` is now optional. If `null` or omitted, the primary server will be selected by default.

Vedere anche:

MongoDB\Driver\Server
MongoDB\Driver\Manager::getServers() - Return the servers to which this manager is connected
» Server Selection Specification

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