MongoDB\Driver\Manager::selectServer

(mongodb >=1.0.0)

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

说明

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

Selects a MongoDB\Driver\Server matching readPreference. This may be used to preselect a server in order to perform version checking before executing an operation.

Note:
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.

参数

readPreference (MongoDB\Driver\ReadPreference): Optionally, a MongoDB\Driver\ReadPreference to select the server for this operation. If none is given, the read preference from the MongoDB Connection URI will be used.

返回值

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

错误／异常

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.

参见

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