Contains all the Cloud Spanner C++ client types and functions.
Classes
Backup
This class identifies a Cloud Spanner Backup.
Bytes
A representation of the Spanner BYTES type: variable-length binary data.
Client
Performs database client operations on Spanner.
ClientOptions
ClientOptions allows the caller to set a variety of options when constructing a Client instance.
CommitOptions
Set options on calls to spanner::Client::Commit().
Connection
A connection to a Spanner database instance.
CreateInstanceRequestBuilder
CreateInstanceRequestBuilder is a builder class for google::spanner::admin::instance::v1::CreateInstanceRequest
CustomerManagedEncryption
Use encryption with encryption_key.
Database
This class identifies a Cloud Spanner Database.
DatabaseAdminClient
Performs database administration operations on Spanner.
DatabaseAdminConnection
A connection to the Cloud Spanner instance administration service.
Decimal<>
A representation of the Spanner NUMERIC type: an exact decimal value with a maximum integer precision (kIntPrecision) and rounding to a maximum fractional precision (kFracPrecision).
DefaultEncryption
Use the per-operation default encryption:
DmlResult
Represents the result of a data modifying operation using spanner::Client::ExecuteDml().
GoogleEncryption
Use Google default encryption.
Instance
This class identifies a Cloud Spanner Instance.
InstanceAdminClient
Performs instance administration operations on Cloud Spanner.
InstanceAdminConnection
A connection to the Cloud Spanner instance administration service.
Json
A simple representation for the Spanner JSON type: a lightweight, text-based, language-independent data interchange format.
JsonB
KeyBound
The KeyBound class is a regular type that represents an open or closed endpoint for a range of keys.
KeySet
The KeySet class is a regular type that represents a collection of Keys.
Mutation
A wrapper for Cloud Spanner mutations.
ProfileDmlResult
Represents the result and profile stats of a data modifying operation using spanner::Client::ProfileDml().
ProfileQueryResult
Represents the stream of Rows and profile stats returned from spanner::Client::ProfileQuery().
QueryOptions
These QueryOptions allow users to configure features about how their SQL queries executes on the server.
QueryPartition
The QueryPartition class is a regular type that represents a single slice of a parallel SQL read.
ReadPartition
The ReadPartition class is a regular type that represents a single slice of a parallel Read operation.
ResultSourceInterface
Defines the interface for RowStream implementations.
Row
A Row is a sequence of columns each with a name and an associated Value.
RowStream
Represents the stream of Rows returned from spanner::Client::Read() or spanner::Client::ExecuteQuery().
RowStreamIterator
A RowStreamIterator is an Input Iterator (see below) that returns a sequence of StatusOr<Row> objects.
SessionPoolOptions
Controls the session pool maintained by a spanner::Client.
SqlStatement
Represents a potentially parameterized SQL statement.
Timestamp
A representation of the Spanner TIMESTAMP type: An instant in time.
Transaction
The representation of a Cloud Spanner transaction.
TupleStream<Tuple>
A TupleStream<Tuple> defines a range that parses Tuple objects from the given range of RowStreamIterators.
TupleStreamIterator<Tuple>
A TupleStreamIterator<Tuple> is an "Input Iterator" that wraps a RowStreamIterator, parsing its elements into a sequence of StatusOr<Tuple> objects.
UpdateInstanceRequestBuilder
UpdateInstanceRequestBuilder is a builder class for google::spanner::admin::instance::v1::UpdateInstanceRequest
Value
The Value class represents a type-safe, nullable Spanner value.
Structs
BatchDmlResult
The result of executing a batch of DML statements.
CommitResult
The result of committing a Transaction.
CommitReturnStatsOption
Option for google::cloud::Options to return additional statistics about the committed transaction in a spanner::CommitResult.
CommitStats
Statistics returned for a committed Transaction.
CommitTimestamp
A sentinel type used to update a commit timestamp column.
ConnectionOptionsTraits
The traits to configure ConnectionOptions<T> for Cloud Spanner.
PartitionDataBoostOption
Option for google::cloud::Options to use "data boost" in the partitions returned from Client::PartitionRead() or PartitionQuery().
PartitionedDmlResult
The result of executing a Partitioned DML query.
PartitionOptions
Options passed to Client::PartitionRead or Client::PartitionQuery.
PartitionSizeOption
Option for google::cloud::Options to set the desired partition size to be generated by Client::PartitionRead() or PartitionQuery().
PartitionsMaximumOption
Option for google::cloud::Options to set the desired maximum number of partitions to return from Client::PartitionRead() or PartitionQuery().
QueryOptimizerStatisticsPackageOption
Option for google::cloud::Options to set the optimizer statistics package used in an SQL query.
QueryOptimizerVersionOption
Option for google::cloud::Options to set the optimizer version used in an SQL query.
ReadIndexNameOption
Option for google::cloud::Options to set the name of an index on a database table.
ReadOptions
Options passed to Client::Read or Client::PartitionRead.
ReadRowLimitOption
Option for google::cloud::Options to set a limit on the number of rows to yield from Client::Read().
RequestPriorityOption
Option for google::cloud::Options to set a spanner::RequestPriority.
RequestTagOption
Option for google::cloud::Options to set a per-request tag.
RouteToLeaderOption
Control "route to leader region" headers.
SessionCreatorRoleOption
Option for google::cloud::Options to set the database role used for session creation.
SessionPoolActionOnExhaustionOption
Option for google::cloud::Options to set the action to take when attempting to allocate a session when the pool is exhausted.
SessionPoolKeepAliveIntervalOption
Option for google::cloud::Options to set the interval at which we refresh sessions so they don't get collected by the backend GC.
SessionPoolLabelsOption
Option for google::cloud::Options to set the labels used when creating sessions within the pool.
SessionPoolMaxIdleSessionsOption
Option for google::cloud::Options to set the maximum number of sessions to keep in the pool in an idle state.
SessionPoolMaxSessionsPerChannelOption
Option for google::cloud::Options to set the maximum number of sessions to create on each channel.
SessionPoolMinSessionsOption
Option for google::cloud::Options to set the minimum number of sessions to keep in the pool.
SpannerBackoffPolicyOption
Option for google::cloud::Options to set a spanner::BackoffPolicy.
SpannerPollingPolicyOption
Option for google::cloud::Options to set a spanner::PollingPolicy.
SpannerRetryPolicyOption
Option for google::cloud::Options to set a spanner::RetryPolicy.
StreamingResumabilityBufferSizeOption
Option for google::cloud::Options to set a limit on how much data will be buffered to guarantee resumability of a streaming read or SQL query.
TransactionTagOption
Option for google::cloud::Options to set a per-transaction tag.
Enums
DecimalMode
ActionOnExhaustion
Action to take when the session pool is exhausted.
RequestPriority
Functions
ToInteger(Decimal< Mode > const &, int)
Conversion to the nearest integer value, scaled by 10^exponent.
Rounds halfway cases away from zero. Fails when the destination type cannot hold that value.
Example
auto d =
spanner::MakeDecimal<spanner::DecimalMode::kGoogleSQL>(123456789, -2)
.value();
assert(d.ToString() == "1234567.89");
assert(spanner::ToInteger<int>(d).value() == 1234568);
assert(spanner::ToInteger<int>(d, 2).value() == 123456789);
| Parameters | |
|---|---|
| Name | Description |
d |
|
exponent |
|
typename T |
|
DecimalMode |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< T > |
|
MakeNumeric(std::string)
MakeNumeric() factory functions for Numeric.
| Parameter | |
|---|---|
| Name | Description |
s |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Numeric > |
|
MakeNumeric(double)
MakeNumeric() factory functions for Numeric.
| Parameter | |
|---|---|
| Name | Description |
d |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Numeric > |
|
MakeNumeric(T, int)
MakeNumeric() factory functions for Numeric.
| Parameters | |
|---|---|
| Name | Description |
i |
|
exponent |
|
typename T |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Numeric > |
|
MakePgNumeric(std::string)
MakePgNumeric() factory functions for PgNumeric.
| Parameter | |
|---|---|
| Name | Description |
s |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< PgNumeric > |
|
MakePgNumeric(double)
MakePgNumeric() factory functions for PgNumeric.
| Parameter | |
|---|---|
| Name | Description |
d |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< PgNumeric > |
|
MakePgNumeric(T, int)
MakePgNumeric() factory functions for PgNumeric.
| Parameters | |
|---|---|
| Name | Description |
i |
|
exponent |
|
typename T |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< PgNumeric > |
|
MakeBackup(std::string const &)
Constructs a Backup from the given full_name.
Returns a non-OK Status if full_name is improperly formed.
| Parameter | |
|---|---|
| Name | Description |
full_name |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Backup > |
|
MakeConnection(spanner::Database const &, Options)
Returns a Connection object that can be used for interacting with Spanner.
The returned connection object should not be used directly; instead it should be given to a Client instance, and methods should be invoked on Client.
The optional opts argument may be used to configure aspects of the returned Connection. Expected options are any of the types in the following option lists.
google::cloud::CommonOptionListgoogle::cloud::GrpcOptionListgoogle::cloud::spanner::SpannerPolicyOptionListgoogle::cloud::spanner::SessionPoolOptionList
See Also
| Parameters | |
|---|---|
| Name | Description |
db |
See |
opts |
(optional) Configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< spanner::Connection > |
|
MakeConnection(Database const &, ConnectionOptions const &, SessionPoolOptions)
Returns a Connection object that can be used for interacting with Spanner.
The returned connection object should not be used directly, rather it should be given to a Client instance, and methods should be invoked on Client.
See Also
| Parameters | |
|---|---|
| Name | Description |
db |
See |
connection_options |
configure the |
session_pool_options |
(optional) configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< Connection > |
|
MakeConnection(Database const &, ConnectionOptions const &, SessionPoolOptions, std::unique_ptr< RetryPolicy >, std::unique_ptr< BackoffPolicy >)
Returns a Connection object that can be used for interacting with Spanner.
The returned connection object should not be used directly, rather it should be given to a Client instance, and methods should be invoked on Client.
See Also
Example
namespace spanner = ::google::cloud::spanner;
using ::google::cloud::StatusOr;
[](std::string const& project_id, std::string const& instance_id,
std::string const& database_id) {
// Use a truncated exponential backoff with jitter to wait between
// retries:
// https://en.wikipedia.org/wiki/Exponential_backoff
// https://cloud.google.com/storage/docs/exponential-backoff
auto client = spanner::Client(spanner::MakeConnection(
spanner::Database(project_id, instance_id, database_id),
google::cloud::Options{}
.set<spanner::SpannerRetryPolicyOption>(
std::make_shared<spanner::LimitedTimeRetryPolicy>(
/*maximum_duration=*/std::chrono::seconds(60)))
.set<spanner::SpannerBackoffPolicyOption>(
std::make_shared<spanner::ExponentialBackoffPolicy>(
/*initial_delay=*/std::chrono::milliseconds(500),
/*maximum_delay=*/std::chrono::seconds(64),
/*scaling=*/1.5))));
std::int64_t rows_inserted;
auto commit_result = client.Commit(
[&client, &rows_inserted](
spanner::Transaction txn) -> StatusOr<spanner::Mutations> {
auto insert = client.ExecuteDml(
std::move(txn),
spanner::SqlStatement(
"INSERT INTO Singers (SingerId, FirstName, LastName)"
" VALUES (20, 'George', 'Washington')"));
if (!insert) return std::move(insert).status();
rows_inserted = insert->RowsModified();
return spanner::Mutations{};
});
if (!commit_result) throw std::move(commit_result).status();
std::cout << "Rows inserted: " << rows_inserted;
}
| Parameters | |
|---|---|
| Name | Description |
db |
See |
connection_options |
configure the |
session_pool_options |
(optional) configure the |
retry_policy |
|
backoff_policy |
|
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< Connection > |
|
MakeDatabase(std::string const &)
Constructs a Database from the given full_name.
Returns a non-OK Status if full_name is improperly formed.
| Parameter | |
|---|---|
| Name | Description |
full_name |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Database > |
|
MakeDatabaseAdminConnection(Options)
Returns a DatabaseAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly; instead it should be given to a DatabaseAdminClient instance.
The optional opts argument may be used to configure aspects of the returned DatabaseAdminConnection. Expected options are any of types in the following option lists.
google::cloud::CommonOptionListgoogle::cloud::GrpcOptionListgoogle::cloud::SpannerPolicyOptionList
See Also
| Parameter | |
|---|---|
| Name | Description |
opts |
(optional) configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< spanner::DatabaseAdminConnection > |
|
MakeDatabaseAdminConnection(ConnectionOptions const &)
Returns a DatabaseAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly, rather it should be given to a DatabaseAdminClient instance.
See Also
| Parameter | |
|---|---|
| Name | Description |
options |
configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< DatabaseAdminConnection > |
|
MakeDatabaseAdminConnection(ConnectionOptions const &, std::unique_ptr< RetryPolicy >, std::unique_ptr< BackoffPolicy >, std::unique_ptr< PollingPolicy >)
Returns a DatabaseAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly, rather it should be given to a DatabaseAdminClient instance.
Example
namespace spanner = ::google::cloud::spanner;
[](std::string const& project_id, std::string const& instance_id) {
// A database admin client is controlled by three policies. The retry
// policy determines for how long the client will retry transient failures.
auto retry_policy =
google::cloud::spanner_admin::DatabaseAdminLimitedTimeRetryPolicy(
/*maximum_duration=*/std::chrono::minutes(25))
.clone();
// The backoff policy controls how long does the client waits to retry after
// a transient failure. Here we configure a truncated exponential backoff
// with jitter:
// https://en.wikipedia.org/wiki/Exponential_backoff
// https://cloud.google.com/storage/docs/exponential-backoff
auto backoff_policy = spanner::ExponentialBackoffPolicy(
/*initial_delay=*/std::chrono::seconds(2),
/*maximum_delay=*/std::chrono::minutes(10),
/*scaling=*/2.0)
.clone();
// The polling policy controls how the client waits for long-running
// operations (such as creating new instances). `GenericPollingPolicy<>`
// combines existing policies. In this case, keep polling until the
// operation completes (with success or error) or 45 minutes, whichever
// happens first. Initially pause for 10 seconds between polling requests,
// increasing the pause by a factor of 4 until it becomes 2 minutes.
auto polling_policy =
spanner::GenericPollingPolicy<>(
spanner::LimitedTimeRetryPolicy(
/*maximum_duration=*/std::chrono::minutes(45)),
spanner::ExponentialBackoffPolicy(
/*initial_delay=*/std::chrono::seconds(10),
/*maximum_delay=*/std::chrono::minutes(2),
/*scaling=*/4.0))
.clone();
auto client = google::cloud::spanner_admin::DatabaseAdminClient(
google::cloud::spanner_admin::MakeDatabaseAdminConnection(),
google::cloud::Options{}
.set<google::cloud::spanner_admin::DatabaseAdminRetryPolicyOption>(
std::move(retry_policy))
.set<
google::cloud::spanner_admin::DatabaseAdminBackoffPolicyOption>(
std::move(backoff_policy))
.set<
google::cloud::spanner_admin::DatabaseAdminPollingPolicyOption>(
std::move(polling_policy)));
// Use the client as usual.
spanner::Instance instance(project_id, instance_id);
std::cout << "Available databases for instance " << instance << "\n";
for (auto& db : client.ListDatabases(instance.FullName())) {
if (!db) throw std::move(db).status();
std::cout << db->name() << "\n";
}
std::cout << "End of available databases\n";
}
| Parameters | |
|---|---|
| Name | Description |
options |
configure the |
retry_policy |
control for how long (or how many times) are retryable RPCs attempted |
backoff_policy |
controls the backoff behavior between retry attempts, typically some form of exponential backoff with jitter |
polling_policy |
controls for how often, and how quickly, are long running checked for completion |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< DatabaseAdminConnection > |
|
MakeInstance(std::string const &)
Constructs an Instance from the given full_name.
Returns a non-OK Status if full_name is improperly formed.
| Parameter | |
|---|---|
| Name | Description |
full_name |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Instance > |
|
MakeInstanceAdminConnection(Options)
Returns an InstanceAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly; instead it should be given to a InstanceAdminClient instance.
The optional opts argument may be used to configure aspects of the returned InstanceAdminConnection. Expected options are any of the types in the following option lists.
google::cloud::CommonOptionListgoogle::cloud::GrpcOptionListgoogle::cloud::SpannerPolicyOptionList
See Also
| Parameter | |
|---|---|
| Name | Description |
opts |
(optional) configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< spanner::InstanceAdminConnection > |
|
MakeInstanceAdminConnection(ConnectionOptions const &)
Returns an InstanceAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly, rather it should be given to a InstanceAdminClient instance.
See Also
| Parameter | |
|---|---|
| Name | Description |
options |
configure the |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< InstanceAdminConnection > |
|
MakeInstanceAdminConnection(ConnectionOptions const &, std::unique_ptr< RetryPolicy >, std::unique_ptr< BackoffPolicy >, std::unique_ptr< PollingPolicy >)
Returns an InstanceAdminConnection object that can be used for interacting with Cloud Spanner's admin APIs.
The returned connection object should not be used directly, rather it should be given to a InstanceAdminClient instance.
Example
namespace spanner = ::google::cloud::spanner;
[](std::string const& project_id) {
// An instance admin client is controlled by three policies. The retry
// policy determines for how long the client will retry transient failures.
auto retry_policy =
google::cloud::spanner_admin::InstanceAdminLimitedTimeRetryPolicy(
/*maximum_duration=*/std::chrono::minutes(25))
.clone();
// The backoff policy controls how long does the client waits to retry after
// a transient failure. Here we configure a truncated exponential backoff
// with jitter:
// https://en.wikipedia.org/wiki/Exponential_backoff
// https://cloud.google.com/storage/docs/exponential-backoff
auto backoff_policy = spanner::ExponentialBackoffPolicy(
/*initial_delay=*/std::chrono::seconds(2),
/*maximum_delay=*/std::chrono::minutes(10),
/*scaling=*/2.0)
.clone();
// The polling policy controls how the client waits for long-running
// operations (such as creating new instances). `GenericPollingPolicy<>`
// combines existing policies. In this case, keep polling until the
// operation completes (with success or error) or 45 minutes, whichever
// happens first. Initially pause for 10 seconds between polling requests,
// increasing the pause by a factor of 4 until it becomes 2 minutes.
auto polling_policy =
spanner::GenericPollingPolicy<>(
spanner::LimitedTimeRetryPolicy(
/*maximum_duration=*/std::chrono::minutes(45)),
spanner::ExponentialBackoffPolicy(
/*initial_delay=*/std::chrono::seconds(10),
/*maximum_delay=*/std::chrono::minutes(2),
/*scaling=*/4.0))
.clone();
auto client = google::cloud::spanner_admin::InstanceAdminClient(
google::cloud::spanner_admin::MakeInstanceAdminConnection(),
google::cloud::Options{}
.set<google::cloud::spanner_admin::InstanceAdminRetryPolicyOption>(
std::move(retry_policy))
.set<
google::cloud::spanner_admin::InstanceAdminBackoffPolicyOption>(
std::move(backoff_policy))
.set<
google::cloud::spanner_admin::InstanceAdminPollingPolicyOption>(
std::move(polling_policy)));
// Use the client as usual.
std::cout << "Available configs for project " << project_id << "\n";
auto project = google::cloud::Project(project_id);
for (auto& cfg : client.ListInstanceConfigs(project.FullName())) {
if (!cfg) throw std::move(cfg).status();
std::cout << cfg->name() << "\n";
}
std::cout << "End of available configs\n";
}
| Parameters | |
|---|---|
| Name | Description |
options |
configure the |
retry_policy |
control for how long (or how many times) are retryable RPCs attempted |
backoff_policy |
controls the backoff behavior between retry attempts, typically some form of exponential backoff with jitter |
polling_policy |
controls for how often, and how quickly, are long running checked for completion |
| Returns | |
|---|---|
| Type | Description |
std::shared_ptr< InstanceAdminConnection > |
|
MakeKey(Ts &&...)
Constructs a Key from the given arguments.
Example
auto delete_albums = spanner::DeleteMutationBuilder(
"Albums", spanner::KeySet()
.AddKey(spanner::MakeKey(2, 1))
.AddKey(spanner::MakeKey(2, 3)))
.Build();
| Parameters | |
|---|---|
| Name | Description |
ts |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Key |
|
MakeKeyBoundClosed(Ts &&...)
Returns a "closed" KeyBound with a Key constructed from the given arguments.
Example
auto delete_singers_range =
spanner::DeleteMutationBuilder(
"Singers", spanner::KeySet().AddRange(spanner::MakeKeyBoundClosed(3),
spanner::MakeKeyBoundOpen(5)))
.Build();
| Parameters | |
|---|---|
| Name | Description |
ts |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
KeyBound |
|
MakeKeyBoundOpen(Ts &&...)
Returns an "open" KeyBound with a Key constructed from the given arguments.
Example
auto key_set = spanner::KeySet().AddRange(spanner::MakeKeyBoundOpen(0),
spanner::MakeKeyBoundOpen(11));
| Parameters | |
|---|---|
| Name | Description |
ts |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
KeyBound |
|
MakeInsertMutation(std::string, std::vector< std::string >, Ts &&...)
Creates a simple insert mutation for the values in values.
Example
void MakeInsertMutation(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
// Delete each of the albums by individual key, then delete all the singers
// using a key range.
auto commit_result = client.Commit(spanner::Mutations{
spanner::InsertOrUpdateMutationBuilder(
"Performances",
{"SingerId", "VenueId", "EventDate", "Revenue", "LastUpdateTime"})
.EmplaceRow(1, 4, absl::CivilDay(2017, 10, 5), 11000,
spanner::CommitTimestamp{})
.EmplaceRow(1, 19, absl::CivilDay(2017, 11, 2), 15000,
spanner::CommitTimestamp{})
.Build()});
if (!commit_result) throw std::move(commit_result).status();
std::cout << "make-insert-mutation was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
| Parameters | |
|---|---|
| Name | Description |
table_name |
|
columns |
|
values |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Mutation |
|
MakeUpdateMutation(std::string, std::vector< std::string >, Ts &&...)
Creates a simple update mutation for the values in values.
Example
void MakeUpdateMutation(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::MakeUpdateMutation(
"Albums", {"SingerId", "AlbumId", "MarketingBudget"}, 1, 1, 200000),
});
if (!commit) throw std::move(commit).status();
std::cout << "make-update-mutation was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
| Parameters | |
|---|---|
| Name | Description |
table_name |
|
columns |
|
values |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Mutation |
|
MakeInsertOrUpdateMutation(std::string, std::vector< std::string >, Ts &&...)
Creates a simple "insert or update" mutation for the values in values.
Example
void MakeInsertOrUpdateMutation(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::MakeInsertOrUpdateMutation(
"Albums", {"SingerId", "AlbumId", "AlbumTitle", "MarketingBudget"}, 1,
1, "Total Junk", 200000),
});
if (!commit) throw std::move(commit).status();
std::cout << "make-insert-or-update-mutation was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
| Parameters | |
|---|---|
| Name | Description |
table_name |
|
columns |
|
values |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Mutation |
|
MakeReplaceMutation(std::string, std::vector< std::string >, Ts &&...)
Creates a simple "replace" mutation for the values in values.
Example
void MakeReplaceMutation(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::MakeReplaceMutation(
"Albums", {"SingerId", "AlbumId", "AlbumTitle", "MarketingBudget"}, 1,
1, "Go, Go, Go", 600000),
});
if (!commit) throw std::move(commit).status();
std::cout << "make-replace-mutation was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
| Parameters | |
|---|---|
| Name | Description |
table_name |
|
columns |
|
values |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Mutation |
|
MakeDeleteMutation(std::string, KeySet)
Creates a simple "delete" mutation for the values in keys.
Example
void MakeDeleteMutation(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::MakeDeleteMutation("Albums", spanner::KeySet::All()),
});
if (!commit) throw std::move(commit).status();
std::cout << "make-delete-mutation was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
| Parameters | |
|---|---|
| Name | Description |
table_name |
|
keys |
|
| Returns | |
|---|---|
| Type | Description |
Mutation |
|
MakeDecimal(std::string)
Construction from a string, in decimal fixed- or floating-point formats.
- [-+]?[0-9]+(.[0-9]*)?([eE][-+]?[0-9]+)?
- [-+]?.[0-9]+([eE][-+]?[0-9]+)?
- [Nn][Aa][Nn] // "not a number" for kPostgreSQL mode
For example, "0", "-999", "3.141592654", "299792458", "6.02214076e23", etc. There must be digits either before or after any decimal point.
Fails on syntax errors or if the conversion would yield a value outside the NUMERIC range. If the argument has more than kFracPrecision digits after the decimal point it will be rounded, with halfway cases rounding away from zero.
| Parameters | |
|---|---|
| Name | Description |
s |
|
DecimalMode |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Decimal< Mode > > |
|
MakeDecimal(double)
Construction from a double.
Fails on NaN or any argument outside the NUMERIC value range (including infinities). If the argument has more than kFracPrecision digits after the decimal point it will be rounded, with halfway cases rounding away from zero.
| Parameters | |
|---|---|
| Name | Description |
d |
|
DecimalMode |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Decimal< Mode > > |
|
MakeDecimal(T, int)
Construction from an integer i, scaled by 10^exponent.
Fails on any (scaled) argument outside the NUMERIC value range.
| Parameters | |
|---|---|
| Name | Description |
i |
|
exponent |
|
typename T |
|
DecimalMode |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Decimal< Mode > > |
|
ToDouble(Decimal< Mode > const &)
Conversion to the closest double value, with possible loss of precision.
Always succeeds (i.e., can never overflow, assuming a double can hold values up to 10^(kIntPrecision+1)).
| Parameters | |
|---|---|
| Name | Description |
d |
|
DecimalMode |
|
| Returns | |
|---|---|
| Type | Description |
double |
|
ToOptions(PartitionOptions const &)
Converts PartitionOptions to common Options.
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
Options |
|
ToPartitionOptions(Options const &)
Converts common Options to PartitionOptions.
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
PartitionOptions |
|
SerializeQueryPartition(QueryPartition const &)
Serializes an instance of QueryPartition to a string of bytes.
The serialized string of bytes is suitable for writing to disk or transmission to another process.
Example
namespace spanner = ::google::cloud::spanner;
google::cloud::StatusOr<std::string> serialized_partition =
spanner::SerializeQueryPartition(partition);
if (!serialized_partition) throw std::move(serialized_partition).status();
std::string const& bytes = *serialized_partition;
// `bytes` contains the serialized data, which may contain NULs and other
// non-printable characters.
SendBinaryStringData(bytes);
| Parameter | |
|---|---|
| Name | Description |
query_partition |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< std::string > |
|
DeserializeQueryPartition(std::string const &)
Deserializes the provided string into a QueryPartition.
The serialized_query_partition argument must be a string that was previously returned by a call to SerializeQueryPartition().
Example
google::cloud::StatusOr<google::cloud::spanner::QueryPartition>
ReceiveQueryPartitionFromRemoteMachine() {
std::string serialized_partition = Receive();
return google::cloud::spanner::DeserializeQueryPartition(
serialized_partition);
}
| Parameter | |
|---|---|
| Name | Description |
serialized_query_partition |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< QueryPartition > |
|
ToOptions(ReadOptions const &)
Converts ReadOptions to common Options.
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
Options |
|
ToReadOptions(Options const &)
Converts common Options to ReadOptions.
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
ReadOptions |
|
SerializeReadPartition(ReadPartition const &)
Serializes an instance of ReadPartition to a string of bytes.
The serialized string of bytes is suitable for writing to disk or transmission to another process.
Example
namespace spanner = ::google::cloud::spanner;
google::cloud::StatusOr<std::string> serialized_partition =
spanner::SerializeReadPartition(partition);
if (!serialized_partition) throw std::move(serialized_partition).status();
std::string const& bytes = *serialized_partition;
// `bytes` contains the serialized data, which may contain NULs and other
// non-printable characters.
SendBinaryStringData(bytes);
| Parameter | |
|---|---|
| Name | Description |
read_partition |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< std::string > |
|
DeserializeReadPartition(std::string const &)
Deserializes the provided string into a ReadPartition.
The serialized_read_partition argument must be a string that was previously returned by a call to SerializeReadPartition().
Example
google::cloud::StatusOr<google::cloud::spanner::ReadPartition>
ReceiveReadPartitionFromRemoteMachine() {
std::string serialized_partition = Receive();
return google::cloud::spanner::DeserializeReadPartition(
serialized_partition);
}
| Parameter | |
|---|---|
| Name | Description |
serialized_read_partition |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< ReadPartition > |
|
MakeTestRow(std::vector< std::pair< std::string, Value > >)
Creates a Row with the specified column names and values.
This overload accepts a vector of pairs, allowing the caller to specify both the column names and the Value that goes in each column.
This function is intended for application developers who are mocking the results of a Client::ExecuteQuery call.
| Parameter | |
|---|---|
| Name | Description |
pairs |
|
| Returns | |
|---|---|
| Type | Description |
Row |
|
MakeTestRow(Ts &&...)
This overload accepts a variadic list of arguments that will be used to create the Values in the row. The column names will be implicitly generated, the first column being "0", the second "1", and so on, corresponding to the argument's position.
This function is intended for application developers who are mocking the results of a Client::ExecuteQuery call.
| Parameters | |
|---|---|
| Name | Description |
ts |
|
typename... |
|
| Returns | |
|---|---|
| Type | Description |
Row |
|
StreamOf(RowRange &&)
A factory that creates a TupleStream<Tuple> by wrapping the given range.
The RowRange must be a range defined by RowStreamIterator objects.
void StreamOf(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
std::cout << "Querying the Singers table:\n";
auto query = client.ExecuteQuery(spanner::SqlStatement(
"SELECT SingerId, FirstName, LastName FROM Singers"));
using RowType = std::tuple<std::int64_t, std::string, std::string>;
for (auto& row : spanner::StreamOf<RowType>(query)) {
if (!row) throw std::move(row).status();
std::cout << " SingerId: " << std::get<0>(*row) << "\n"
<< " FirstName: " << std::get<1>(*row) << "\n"
<< " LastName: " << std::get<2>(*row) << "\n";
}
std::cout << "end of results\n";
}
| Parameters | |
|---|---|
| Name | Description |
range |
|
typename Tuple |
|
typename RowRange |
must be a range defined by |
| Returns | |
|---|---|
| Type | Description |
TupleStream< Tuple > |
|
GetSingularRow(RowRange)
Returns the only row from a range that contains exactly one row.
An error is returned if the given range does not contain exactly one row. This is a convenience function that may be useful when the caller knows that a range should contain exactly one row, such as when LIMIT 1 is used in an SQL query, or when a read is performed on a guaranteed unique key such that only a single row could possibly match. In cases where the caller does not know how many rows may be returned, they should instead consume the range in a loop.
void GetSingularRow(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto query = client.ExecuteQuery(spanner::SqlStatement(
"SELECT FirstName, LastName FROM Singers WHERE SingerId = @singer_id",
{{"singer_id", spanner::Value(2)}}));
// `SingerId` is the primary key for the `Singers` table, the `GetSingularRow`
// helper returns a single row or an error:
using RowType = std::tuple<std::string, std::string>;
auto row = GetSingularRow(spanner::StreamOf<RowType>(query));
if (!row) throw std::move(row).status();
std::cout << "FirstName: " << std::get<0>(*row)
<< "\nLastName: " << std::get<1>(*row) << "\n";
}
| Parameters | |
|---|---|
| Name | Description |
range |
|
typename RowRange |
|
| Returns | |
|---|---|
| Type | Description |
auto |
|
MakeTimestamp(absl::Time)
Construct a Timestamp from an absl::Time.
May produce out-of-range errors if the given time is beyond the range supported by Timestamp (see class comments above).
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Timestamp > |
|
MakeTimestamp(protobuf::Timestamp const &)
Construct a Timestamp from a google::protobuf::Timestamp.
May produce out-of-range errors if the given protobuf is beyond the range supported by Timestamp (which a valid protobuf never will).
| Parameter | |
|---|---|
| Name | Description |
|
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Timestamp > |
|
MakeTimestamp(sys_time< Duration > const &)
Construct a Timestamp from a std::chrono::time_point on the system clock.
May produce out-of-range errors, depending on the properties of Duration and the std::chrono::system_clock epoch. Duration::rep may not be wider than std::int64_t. Requires that Duration::period is no more precise than std::nano.
| Parameters | |
|---|---|
| Name | Description |
tp |
|
typename Duration |
|
| Returns | |
|---|---|
| Type | Description |
StatusOr< Timestamp > |
|
MakeReadOnlyTransaction(Transaction::ReadOnlyOptions)
Create a read-only transaction configured with opts.
| Parameter | |
|---|---|
| Name | Description |
opts |
|
| Returns | |
|---|---|
| Type | Description |
Transaction |
|
MakeReadWriteTransaction(Transaction::ReadWriteOptions)
Create a read-write transaction configured with opts.
| Parameter | |
|---|---|
| Name | Description |
opts |
|
| Returns | |
|---|---|
| Type | Description |
Transaction |
|
MakeReadWriteTransaction(Transaction const &, Transaction::ReadWriteOptions)
Create a read-write transaction configured with opts, and sharing lock priority with txn.
This should be used when rerunning an aborted transaction, so that the new attempt has a slightly better chance of success.
| Parameters | |
|---|---|
| Name | Description |
txn |
|
opts |
|
| Returns | |
|---|---|
| Type | Description |
Transaction |
|
MakeNullValue()
Factory to construct a "null" Value of the specified type T.
This is equivalent to passing an absl::optional<T> without a value to the constructor, though this factory may be easier to invoke and result in clearer code at the call site.
| Parameter | |
|---|---|
| Name | Description |
typename T |
|
| Returns | |
|---|---|
| Type | Description |
Value |
|
VersionMajor()
The Cloud Spanner C++ Client major version.
| Returns | |
|---|---|
| Type | Description |
int constexpr |
|
VersionMinor()
The Cloud Spanner C++ Client minor version.
| Returns | |
|---|---|
| Type | Description |
int constexpr |
|
VersionPatch()
The Cloud Spanner C++ Client patch version.
| Returns | |
|---|---|
| Type | Description |
int constexpr |
|
VersionPreRelease()
The Cloud Spanner C++ Client pre-release version.
| Returns | |
|---|---|
| Type | Description |
constexpr char const * |
|
Version()
A single integer representing the Major/Minor/Patch version.
| Returns | |
|---|---|
| Type | Description |
int constexpr |
|
VersionString()
The version as a string, in MAJOR.MINOR.PATCH[-PRE][+gitrev] format.
| Returns | |
|---|---|
| Type | Description |
std::string |
|
Type Aliases
Numeric
Decimal< DecimalMode::kGoogleSQL >
Most users only need the Numeric or PgNumeric specializations of Decimal.
For example:
auto n = spanner::MakeNumeric(42).value();
assert(n.ToString() == "42");
assert(spanner::ToInteger<int>(n).value() == 42);
PgNumeric
Decimal< DecimalMode::kPostgreSQL >
Most users only need the Numeric or PgNumeric specializations of Decimal.
For example:
auto n = spanner::MakeNumeric(42).value();
assert(n.ToString() == "42");
assert(spanner::ToInteger<int>(n).value() == 42);
BackoffPolicy
::google::cloud::internal::BackoffPolicy
The base class for backoff policies.
ExponentialBackoffPolicy
google::cloud::internal::ExponentialBackoffPolicy
A truncated exponential backoff policy with randomized periods.
ConnectionOptions
google::cloud::ConnectionOptions< ConnectionOptionsTraits >
The options for Cloud Spanner connections.
See google::cloud::ConnectionOptions<T> for more details at https://googleapis.dev/cpp/google-cloud-common/latest/
ListDatabaseRange
::google::cloud::internal::PaginationRange< google::spanner::admin::database::v1::Database >
An input range to stream all the databases in a Cloud Spanner instance.
This type models an input range of google::spanner::admin::v1::Database objects. Applications can make a single pass through the results.
ListBackupOperationsRange
google::cloud::internal::PaginationRange< google::longrunning::Operation >
An input range to stream backup operations in Cloud Spanner instance.
This type models an input range of google::longrunning::Operation objects. Applications can make a single pass through the results.
ListDatabaseOperationsRange
google::cloud::internal::PaginationRange< google::longrunning::Operation >
An input range to stream database operations in Cloud Spanner instance.
This type models an input range of google::longrunning::Operation objects. Applications can make a single pass through the results.
ListBackupsRange
::google::cloud::internal::PaginationRange< google::spanner::admin::database::v1::Backup >
An input range to stream backups in Cloud Spanner instance.
This type models an input range of google::longrunning::Operation objects. Applications can make a single pass through the results.
Date
::absl::CivilDay
Represents a date in the proleptic Gregorian calendar as a triple of year, month (1-12), and day (1-31).
We use absl::CivilDay to represent a "date". Direct use of absl::CivilDay is recommended. This alias exists for backward compatibility.
See Also
EncryptionConfig
absl::variant< DefaultEncryption, GoogleEncryption, CustomerManagedEncryption >
Specify the encryption configuration for any of the following operations:
IamUpdater
::google::cloud::IamUpdater
Type alias for google::cloud::IamUpdater.
Used in the SetIamPolicy() read-modify-write cycle of the Spanner admin clients, DatabaseAdminClient and InstanceAdminClient, in order to avoid race conditions.
The updater is called with a recently fetched policy, and should either return an empty optional if no changes are required, or return a new policy to be set. In the latter case the control loop will always set the etag of the new policy to that of the recently fetched one. A failure to update then indicates a race, and the process will repeat.
ListInstancesRange
::google::cloud::internal::PaginationRange< google::spanner::admin::instance::v1::Instance >
An input range to stream all the instances in a Cloud project.
This type models an input range of google::spanner::admin::v1::Instance objects. Applications can make a single pass through the results.
ListInstanceConfigsRange
::google::cloud::internal::PaginationRange< google::spanner::admin::instance::v1::InstanceConfig >
An input range to stream all the instance configs in a Cloud project.
This type models an input range of google::spanner::admin::v1::Instance objects. Applications can make a single pass through the results.
Key
std::vector< Value >
A Key is a collection of Value objects where the i'th value corresponds to the i'th component of the table or primary index key.
In C++, this is implemented as a std::vector<Value>. See the MakeKey factory function below for an easy way to construct a valid Key instance.
Mutations
std::vector< Mutation >
An ordered sequence of mutations to pass to Client::Commit() or return from the Client::Commit() mutator.
InsertMutationBuilder
spanner_internal::WriteMutationBuilder< spanner_internal::InsertOp >
A helper class to construct "insert" mutations.
Example
void InsertMutationBuilder(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(
spanner::Mutations{spanner::InsertMutationBuilder(
"Singers", {"SingerId", "FirstName", "LastName"})
.EmplaceRow(1, "Marc", "Richards")
.EmplaceRow(2, "Catalina", "Smith")
.EmplaceRow(3, "Alice", "Trentor")
.EmplaceRow(4, "Lea", "Martin")
.EmplaceRow(5, "David", "Lomond")
.Build(),
spanner::InsertMutationBuilder(
"Albums", {"SingerId", "AlbumId", "AlbumTitle"})
.EmplaceRow(1, 1, "Total Junk")
.EmplaceRow(1, 2, "Go, Go, Go")
.EmplaceRow(2, 1, "Green")
.EmplaceRow(2, 2, "Forever Hold Your Peace")
.EmplaceRow(2, 3, "Terrified")
.Build()});
if (!commit) throw std::move(commit).status();
std::cout << "insert-mutation-builder was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
UpdateMutationBuilder
spanner_internal::WriteMutationBuilder< spanner_internal::UpdateOp >
A helper class to construct "update" mutations.
Example
void UpdateMutationBuilder(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::UpdateMutationBuilder("Albums",
{"SingerId", "AlbumId", "MarketingBudget"})
.EmplaceRow(1, 1, 100000)
.EmplaceRow(2, 2, 500000)
.Build()});
if (!commit) throw std::move(commit).status();
std::cout << "update-mutation-builder was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
InsertOrUpdateMutationBuilder
spanner_internal::WriteMutationBuilder< spanner_internal::InsertOrUpdateOp >
A helper class to construct "insert_or_update" mutations.
Example
void InsertOrUpdateMutationBuilder(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::InsertOrUpdateMutationBuilder(
"Albums", {"SingerId", "AlbumId", "AlbumTitle", "MarketingBudget"})
.EmplaceRow(1, 1, "Total Junk", 100000)
.EmplaceRow(1, 2, "Go, Go, Go", 200000)
.EmplaceRow(2, 1, "Green", 300000)
.EmplaceRow(2, 2, "Forever Hold Your Peace", 400000)
.EmplaceRow(2, 3, "Terrified", 500000)
.Build()});
if (!commit) throw std::move(commit).status();
std::cout << "insert-or-update-mutation-builder was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
ReplaceMutationBuilder
spanner_internal::WriteMutationBuilder< spanner_internal::ReplaceOp >
A helper class to construct "replace" mutations.
Example
void ReplaceMutationBuilder(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(spanner::Mutations{
spanner::ReplaceMutationBuilder(
"Albums", {"SingerId", "AlbumId", "AlbumTitle", "MarketingBudget"})
.EmplaceRow(1, 1, "Total Junk", 500000)
.EmplaceRow(1, 2, "Go, Go, Go", 400000)
.EmplaceRow(2, 1, "Green", 300000)
.Build()});
if (!commit) throw std::move(commit).status();
std::cout << "replace-mutation-builder was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
DeleteMutationBuilder
spanner_internal::DeleteMutationBuilder
A helper class to construct "delete" mutations.
Example
void DeleteMutationBuilder(google::cloud::spanner::Client client) {
namespace spanner = ::google::cloud::spanner;
auto commit = client.Commit(
spanner::Mutations{spanner::DeleteMutationBuilder(
"Albums", spanner::KeySet()
.AddKey(spanner::MakeKey(1, 1))
.AddKey(spanner::MakeKey(1, 2)))
.Build()});
if (!commit) throw std::move(commit).status();
std::cout << "delete-mutation-builder was successful\n";
}
See Also
The Mutation class documentation for an overview of the Cloud Spanner mutation API
See Also
https://cloud.google.com/spanner/docs/modify-mutation-api for more information about the Cloud Spanner mutation API.
SpannerPolicyOptionList
OptionList< spanner::SpannerRetryPolicyOption, SpannerBackoffPolicyOption, SpannerPollingPolicyOption >
List of all "policy" options.
SessionPoolOptionList
OptionList< RouteToLeaderOption, SessionCreatorRoleOption, SessionPoolMinSessionsOption, SessionPoolMaxSessionsPerChannelOption, SessionPoolMaxIdleSessionsOption, SessionPoolActionOnExhaustionOption, SessionPoolKeepAliveIntervalOption, SessionPoolLabelsOption >
List of all SessionPool options.
Pass to spanner::MakeConnection().
RequestOptionList
OptionList< RequestPriorityOption, RequestTagOption >
List of Request options for client::ExecuteBatchDml().
PollingPolicy
::google::cloud::PollingPolicy
GenericPollingPolicy
::google::cloud::GenericPollingPolicy< Retry, Backoff >
ExecutionPlan
::google::spanner::v1::QueryPlan
Contains a hierarchical representation of the operations the database server performs in order to execute a particular SQL statement.
Example:
// Only SQL queries with a Distributed Union as the first operator in the
// `ExecutionPlan` can be partitioned.
auto is_partitionable = [](spanner::ExecutionPlan const& plan) {
return (!plan.plan_nodes().empty() &&
plan.plan_nodes(0).kind() ==
google::spanner::v1::PlanNode::RELATIONAL &&
plan.plan_nodes(0).display_name() == "Distributed Union");
};
google::cloud::StatusOr<spanner::ExecutionPlan> plan = client.AnalyzeSql(
spanner::MakeReadOnlyTransaction(),
spanner::SqlStatement(
"SELECT SingerId, FirstName, LastName FROM Singers"));
if (!plan) throw std::move(plan).status();
if (!is_partitionable(*plan)) {
throw std::runtime_error("Query is not partitionable");
}
RetryPolicy
::google::cloud::internal::TraitBasedRetryPolicy< spanner_internal::SafeGrpcRetry >
The base class for retry policies.
LimitedTimeRetryPolicy
::google::cloud::internal::LimitedTimeRetryPolicy< spanner_internal::SafeGrpcRetry >
A retry policy that limits based on time.
LimitedErrorCountRetryPolicy
google::cloud::internal::LimitedErrorCountRetryPolicy< spanner_internal::SafeGrpcRetry >
A retry policy that limits the number of times a request can fail.
TransactionRerunPolicy
::google::cloud::internal::TraitBasedRetryPolicy< spanner_internal::SafeTransactionRerun >
The base class for transaction rerun policies.
LimitedTimeTransactionRerunPolicy
google::cloud::internal::LimitedTimeRetryPolicy< spanner_internal::SafeTransactionRerun >
A transaction rerun policy that limits the duration of the rerun loop.
LimitedErrorCountTransactionRerunPolicy
google::cloud::internal::LimitedErrorCountRetryPolicy< spanner_internal::SafeTransactionRerun >
A transaction rerun policy that limits the number of failures.
sys_time
std::chrono::time_point< std::chrono::system_clock, Duration >
Convenience alias.
std::chrono::sys_time since C++20.
TracingOptions
::google::cloud::TracingOptions
The configuration parameters for RPC/protobuf tracing.
The default options are: single_line_mode=on use_short_repeated_primitives=on truncate_string_field_longer_than=128