Module « pymongo »

Classe « WriteConcern »

Informations générales

Héritage

builtins.object
    WriteConcern

Définition

class WriteConcern(builtins.object):

Description _{[extrait de WriteConcern.doc]}

WriteConcern

    :Parameters:
        - `w`: (integer or string) Used with replication, write operations
          will block until they have been replicated to the specified number
          or tagged set of servers. `w=<integer>` always includes the replica
          set primary (e.g. w=3 means write to the primary and wait until
          replicated to **two** secondaries). **w=0 disables acknowledgement
          of write operations and can not be used with other write concern
          options.**
        - `wtimeout`: (integer) Used in conjunction with `w`. Specify a value
          in milliseconds to control how long to wait for write propagation
          to complete. If replication does not complete in the given
          timeframe, a timeout exception is raised.
        - `j`: If ``True`` block until write operations have been committed
          to the journal. Cannot be used in combination with `fsync`. Prior
          to MongoDB 2.6 this option was ignored if the server was running
          without journaling. Starting with MongoDB 2.6 write operations will
          fail with an exception if this option is used when the server is
          running without journaling.
        - `fsync`: If ``True`` and the server is running without journaling,
          blocks until the server has synced all data files to disk. If the
          server is running with journaling, this acts the same as the `j`
          option, blocking until write operations have been committed to the
          journal. Cannot be used in combination with `j`.

Constructeur(s)

Signature du constructeur	Description
__init__(self, w=None, wtimeout=None, j=None, fsync=None)

Liste des propriétés

Nom de la propriété	Description
acknowledged	If ``True`` write operations will wait for acknowledgement before _{[extrait de __doc__]}
document	The document representation of this write concern. _{[extrait de __doc__]}
is_server_default	Does this WriteConcern match the server default. _{[extrait de __doc__]}