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User friendly container for Cloud Spanner Database.
Classes
BatchCheckout
BatchCheckout
(
database
)
Context manager for using a batch from a database.
Inside the context manager, checks out a session from the database, creates a batch from it, making the batch available.
Caller must not use the batch to perform API requests outside the scope of the context manager.
BatchSnapshot
BatchSnapshot
(
database
,
read_timestamp
=
None
,
exact_staleness
=
None
)
Wrapper for generating and processing read / query batches.
database
read_timestamp
datetime.datetime
Execute all reads at the given timestamp.
exact_staleness
datetime.timedelta
Execute all reads at a timestamp that is exact_staleness
old.
Database
Database
(
database_id
,
instance
,
ddl_statements
=
(),
pool
=
None
,
logger
=
None
)
Representation of a Cloud Spanner Database.
We can use a Database
to:
-
createthe database -
reloadthe database -
updatethe database -
dropthe database
database_id
str
The ID of the database.
instance
ddl_statements
list of string
(Optional) DDL statements, excluding the CREATE DATABASE statement.
pool
concrete subclass of AbstractSessionPool
.
(Optional) session pool to be used by database. If not passed, the database will construct an instance of BurstyPool .
logger
logging.Logger
(Optional) a custom logger that is used if log_commit_stats
is True
to log commit statistics. If not passed, a logger will be created when needed that will log the commit statistics to stdout.
SnapshotCheckout
SnapshotCheckout
(
database
,
**
kw
)
Context manager for using a snapshot from a database.
Inside the context manager, checks out a session from the database, creates a snapshot from it, making the snapshot available.
Caller must not use the snapshot to perform API requests outside the scope of the context manager.
