Class ReadSession (2.22.0)

ReadSession(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Information about the ReadSession.

This message has oneof_ fields (mutually exclusive fields). For each oneof, at most one member field can be set at the same time. Setting any member of the oneof automatically clears all other members.

.. _oneof:


name str
Output only. Unique identifier for the session, in the form projects/{project_id}/locations/{location}/sessions/{session_id}.
expire_time google.protobuf.timestamp_pb2.Timestamp
Output only. Time at which the session becomes invalid. After this time, subsequent requests to read this Session will return errors. The expire_time is automatically assigned and currently cannot be specified or updated.
Immutable. Data format of the output data.
Output only. Avro schema. This field is a member of oneof_ schema.
Output only. Arrow schema. This field is a member of oneof_ schema.
table str
Immutable. Table that this ReadSession is reading from, in the form \`projects/{project_id}/datasets/{dataset_id}/tables/{table_id}
Optional. Any modifiers which are applied when reading from the specified table.
Optional. Read options for this session (e.g. column selection, filters).
streams MutableSequence[]
Output only. A list of streams created with the session. At least one stream is created with the session. In the future, larger request_stream_count values *may* result in this list being unpopulated, in that case, the user will need to use a List method to get the streams instead, which is not yet available.



TableModifiers(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Additional attributes when reading a table.


TableReadOptions(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Options dictating how we read a table.