Google Cloud Spanner v1 API - Class Spanner.SpannerClient (5.0.0-beta05) 

public class Spanner.SpannerClient : ClientBase<Spanner.SpannerClient>

Reference documentation and code samples for the Google Cloud Spanner v1 API class Spanner.SpannerClient.

Client for Spanner

Inheritance

object > ClientBase > ClientBaseSpannerSpannerClient > Spanner.SpannerClient

Namespace

Google.Cloud.Spanner.V1

Assembly

Google.Cloud.Spanner.V1.dll

Constructors

SpannerClient()

protected SpannerClient()

Protected parameterless constructor to allow creation of test doubles.

SpannerClient(CallInvoker)

public SpannerClient(CallInvoker callInvoker)

Creates a new client for Spanner that uses a custom CallInvoker.

Parameter
Name Description
callInvoker CallInvoker

The callInvoker to use to make remote calls.

SpannerClient(ChannelBase)

public SpannerClient(ChannelBase channel)

Creates a new client for Spanner

Parameter
Name Description
channel ChannelBase

The channel to use to make remote calls.

SpannerClient(ClientBaseConfiguration)

protected SpannerClient(ClientBase.ClientBaseConfiguration configuration)

Protected constructor to allow creation of configured clients.

Parameter
Name Description
configuration ClientBaseClientBaseConfiguration

The client configuration.

Methods

BatchCreateSessions(BatchCreateSessionsRequest, CallOptions)

public virtual BatchCreateSessionsResponse BatchCreateSessions(BatchCreateSessionsRequest request, CallOptions options)

Creates multiple new sessions.

This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.

Parameters
Name Description
request BatchCreateSessionsRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
BatchCreateSessionsResponse

The response received from the server.

BatchCreateSessions(BatchCreateSessionsRequest, Metadata, DateTime?, CancellationToken)

public virtual BatchCreateSessionsResponse BatchCreateSessions(BatchCreateSessionsRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates multiple new sessions.

This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.

Parameters
Name Description
request BatchCreateSessionsRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
BatchCreateSessionsResponse

The response received from the server.

BatchCreateSessionsAsync(BatchCreateSessionsRequest, CallOptions)

public virtual AsyncUnaryCall<BatchCreateSessionsResponse> BatchCreateSessionsAsync(BatchCreateSessionsRequest request, CallOptions options)

Creates multiple new sessions.

This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.

Parameters
Name Description
request BatchCreateSessionsRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallBatchCreateSessionsResponse

The call object.

BatchCreateSessionsAsync(BatchCreateSessionsRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<BatchCreateSessionsResponse> BatchCreateSessionsAsync(BatchCreateSessionsRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates multiple new sessions.

This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.

Parameters
Name Description
request BatchCreateSessionsRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallBatchCreateSessionsResponse

The call object.

BatchWrite(BatchWriteRequest, CallOptions)

public virtual AsyncServerStreamingCall<BatchWriteResponse> BatchWrite(BatchWriteRequest request, CallOptions options)

Batches the supplied mutation groups in a collection of efficient transactions. All mutations in a group are committed atomically. However, mutations across groups can be committed non-atomically in an unspecified order and thus, they must be independent of each other. Partial failure is possible, i.e., some groups may have been committed successfully, while some may have failed. The results of individual batches are streamed into the response as the batches are applied.

BatchWrite requests are not replay protected, meaning that each mutation group may be applied more than once. Replays of non-idempotent mutations may have undesirable effects. For example, replays of an insert mutation may produce an already exists error or if you use generated or commit timestamp-based keys, it may result in additional rows being added to the mutation's table. We recommend structuring your mutation groups to be idempotent to avoid this issue.

Parameters
Name Description
request BatchWriteRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncServerStreamingCallBatchWriteResponse

The call object.

BatchWrite(BatchWriteRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncServerStreamingCall<BatchWriteResponse> BatchWrite(BatchWriteRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Batches the supplied mutation groups in a collection of efficient transactions. All mutations in a group are committed atomically. However, mutations across groups can be committed non-atomically in an unspecified order and thus, they must be independent of each other. Partial failure is possible, i.e., some groups may have been committed successfully, while some may have failed. The results of individual batches are streamed into the response as the batches are applied.

BatchWrite requests are not replay protected, meaning that each mutation group may be applied more than once. Replays of non-idempotent mutations may have undesirable effects. For example, replays of an insert mutation may produce an already exists error or if you use generated or commit timestamp-based keys, it may result in additional rows being added to the mutation's table. We recommend structuring your mutation groups to be idempotent to avoid this issue.

Parameters
Name Description
request BatchWriteRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncServerStreamingCallBatchWriteResponse

The call object.

BeginTransaction(BeginTransactionRequest, CallOptions)

public virtual Transaction BeginTransaction(BeginTransactionRequest request, CallOptions options)

Begins a new transaction. This step can often be skipped: [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a side-effect.

Parameters
Name Description
request BeginTransactionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
Transaction

The response received from the server.

BeginTransaction(BeginTransactionRequest, Metadata, DateTime?, CancellationToken)

public virtual Transaction BeginTransaction(BeginTransactionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Begins a new transaction. This step can often be skipped: [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a side-effect.

Parameters
Name Description
request BeginTransactionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
Transaction

The response received from the server.

BeginTransactionAsync(BeginTransactionRequest, CallOptions)

public virtual AsyncUnaryCall<Transaction> BeginTransactionAsync(BeginTransactionRequest request, CallOptions options)

Begins a new transaction. This step can often be skipped: [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a side-effect.

Parameters
Name Description
request BeginTransactionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallTransaction

The call object.

BeginTransactionAsync(BeginTransactionRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<Transaction> BeginTransactionAsync(BeginTransactionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Begins a new transaction. This step can often be skipped: [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a side-effect.

Parameters
Name Description
request BeginTransactionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallTransaction

The call object.

Commit(CommitRequest, CallOptions)

public virtual CommitResponse Commit(CommitRequest request, CallOptions options)

Commits a transaction. The request includes the mutations to be applied to rows in the database.

Commit might return an ABORTED error. This can occur at any time; commonly, the cause is conflicts with concurrent transactions. However, it can also happen for a variety of other reasons. If Commit returns ABORTED, the caller should re-attempt the transaction from the beginning, re-using the same session.

On very rare occasions, Commit might return UNKNOWN. This can happen, for example, if the client job experiences a 1+ hour networking failure. At that point, Cloud Spanner has lost track of the transaction outcome and we recommend that you perform another read from the database to see the state of things as they are now.

Parameters
Name Description
request CommitRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
CommitResponse

The response received from the server.

Commit(CommitRequest, Metadata, DateTime?, CancellationToken)

public virtual CommitResponse Commit(CommitRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Commits a transaction. The request includes the mutations to be applied to rows in the database.

Commit might return an ABORTED error. This can occur at any time; commonly, the cause is conflicts with concurrent transactions. However, it can also happen for a variety of other reasons. If Commit returns ABORTED, the caller should re-attempt the transaction from the beginning, re-using the same session.

On very rare occasions, Commit might return UNKNOWN. This can happen, for example, if the client job experiences a 1+ hour networking failure. At that point, Cloud Spanner has lost track of the transaction outcome and we recommend that you perform another read from the database to see the state of things as they are now.

Parameters
Name Description
request CommitRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
CommitResponse

The response received from the server.

CommitAsync(CommitRequest, CallOptions)

public virtual AsyncUnaryCall<CommitResponse> CommitAsync(CommitRequest request, CallOptions options)

Commits a transaction. The request includes the mutations to be applied to rows in the database.

Commit might return an ABORTED error. This can occur at any time; commonly, the cause is conflicts with concurrent transactions. However, it can also happen for a variety of other reasons. If Commit returns ABORTED, the caller should re-attempt the transaction from the beginning, re-using the same session.

On very rare occasions, Commit might return UNKNOWN. This can happen, for example, if the client job experiences a 1+ hour networking failure. At that point, Cloud Spanner has lost track of the transaction outcome and we recommend that you perform another read from the database to see the state of things as they are now.

Parameters
Name Description
request CommitRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallCommitResponse

The call object.

CommitAsync(CommitRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<CommitResponse> CommitAsync(CommitRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Commits a transaction. The request includes the mutations to be applied to rows in the database.

Commit might return an ABORTED error. This can occur at any time; commonly, the cause is conflicts with concurrent transactions. However, it can also happen for a variety of other reasons. If Commit returns ABORTED, the caller should re-attempt the transaction from the beginning, re-using the same session.

On very rare occasions, Commit might return UNKNOWN. This can happen, for example, if the client job experiences a 1+ hour networking failure. At that point, Cloud Spanner has lost track of the transaction outcome and we recommend that you perform another read from the database to see the state of things as they are now.

Parameters
Name Description
request CommitRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallCommitResponse

The call object.

CreateSession(CreateSessionRequest, CallOptions)

public virtual Session CreateSession(CreateSessionRequest request, CallOptions options)

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions.

Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit.

Active sessions use additional server resources, so it is a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner may delete sessions for which no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND.

Idle sessions can be kept alive by sending a trivial SQL query periodically, e.g., "SELECT 1".

Parameters
Name Description
request CreateSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
Session

The response received from the server.

CreateSession(CreateSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual Session CreateSession(CreateSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions.

Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit.

Active sessions use additional server resources, so it is a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner may delete sessions for which no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND.

Idle sessions can be kept alive by sending a trivial SQL query periodically, e.g., "SELECT 1".

Parameters
Name Description
request CreateSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
Session

The response received from the server.

CreateSessionAsync(CreateSessionRequest, CallOptions)

public virtual AsyncUnaryCall<Session> CreateSessionAsync(CreateSessionRequest request, CallOptions options)

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions.

Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit.

Active sessions use additional server resources, so it is a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner may delete sessions for which no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND.

Idle sessions can be kept alive by sending a trivial SQL query periodically, e.g., "SELECT 1".

Parameters
Name Description
request CreateSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallSession

The call object.

CreateSessionAsync(CreateSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<Session> CreateSessionAsync(CreateSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions.

Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit.

Active sessions use additional server resources, so it is a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner may delete sessions for which no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND.

Idle sessions can be kept alive by sending a trivial SQL query periodically, e.g., "SELECT 1".

Parameters
Name Description
request CreateSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallSession

The call object.

DeleteSession(DeleteSessionRequest, CallOptions)

public virtual Empty DeleteSession(DeleteSessionRequest request, CallOptions options)

Ends a session, releasing server resources associated with it. This will asynchronously trigger cancellation of any operations that are running with this session.

Parameters
Name Description
request DeleteSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
Empty

The response received from the server.

DeleteSession(DeleteSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual Empty DeleteSession(DeleteSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Ends a session, releasing server resources associated with it. This will asynchronously trigger cancellation of any operations that are running with this session.

Parameters
Name Description
request DeleteSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
Empty

The response received from the server.

DeleteSessionAsync(DeleteSessionRequest, CallOptions)

public virtual AsyncUnaryCall<Empty> DeleteSessionAsync(DeleteSessionRequest request, CallOptions options)

Ends a session, releasing server resources associated with it. This will asynchronously trigger cancellation of any operations that are running with this session.

Parameters
Name Description
request DeleteSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallEmpty

The call object.

DeleteSessionAsync(DeleteSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<Empty> DeleteSessionAsync(DeleteSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Ends a session, releasing server resources associated with it. This will asynchronously trigger cancellation of any operations that are running with this session.

Parameters
Name Description
request DeleteSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallEmpty

The call object.

ExecuteBatchDml(ExecuteBatchDmlRequest, CallOptions)

public virtual ExecuteBatchDmlResponse ExecuteBatchDml(ExecuteBatchDmlRequest request, CallOptions options)

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].

Statements are executed in sequential order. A request can succeed even if a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the response provides information about the statement that failed. Clients must inspect this field to determine whether an error occurred.

Execution stops after the first failed statement; the remaining statements are not executed.

Parameters
Name Description
request ExecuteBatchDmlRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
ExecuteBatchDmlResponse

The response received from the server.

ExecuteBatchDml(ExecuteBatchDmlRequest, Metadata, DateTime?, CancellationToken)

public virtual ExecuteBatchDmlResponse ExecuteBatchDml(ExecuteBatchDmlRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].

Statements are executed in sequential order. A request can succeed even if a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the response provides information about the statement that failed. Clients must inspect this field to determine whether an error occurred.

Execution stops after the first failed statement; the remaining statements are not executed.

Parameters
Name Description
request ExecuteBatchDmlRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
ExecuteBatchDmlResponse

The response received from the server.

ExecuteBatchDmlAsync(ExecuteBatchDmlRequest, CallOptions)

public virtual AsyncUnaryCall<ExecuteBatchDmlResponse> ExecuteBatchDmlAsync(ExecuteBatchDmlRequest request, CallOptions options)

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].

Statements are executed in sequential order. A request can succeed even if a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the response provides information about the statement that failed. Clients must inspect this field to determine whether an error occurred.

Execution stops after the first failed statement; the remaining statements are not executed.

Parameters
Name Description
request ExecuteBatchDmlRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallExecuteBatchDmlResponse

The call object.

ExecuteBatchDmlAsync(ExecuteBatchDmlRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<ExecuteBatchDmlResponse> ExecuteBatchDmlAsync(ExecuteBatchDmlRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].

Statements are executed in sequential order. A request can succeed even if a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the response provides information about the statement that failed. Clients must inspect this field to determine whether an error occurred.

Execution stops after the first failed statement; the remaining statements are not executed.

Parameters
Name Description
request ExecuteBatchDmlRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallExecuteBatchDmlResponse

The call object.

ExecuteSql(ExecuteSqlRequest, CallOptions)

public virtual ResultSet ExecuteSql(ExecuteSqlRequest request, CallOptions options)

Executes an SQL statement, returning all results in a single reply. This method cannot be used to return a result set larger than 10 MiB; if the query yields more data than that, the query fails with a FAILED_PRECONDITION error.

Operations inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be fetched in streaming fashion by calling [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
ResultSet

The response received from the server.

ExecuteSql(ExecuteSqlRequest, Metadata, DateTime?, CancellationToken)

public virtual ResultSet ExecuteSql(ExecuteSqlRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Executes an SQL statement, returning all results in a single reply. This method cannot be used to return a result set larger than 10 MiB; if the query yields more data than that, the query fails with a FAILED_PRECONDITION error.

Operations inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be fetched in streaming fashion by calling [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
ResultSet

The response received from the server.

ExecuteSqlAsync(ExecuteSqlRequest, CallOptions)

public virtual AsyncUnaryCall<ResultSet> ExecuteSqlAsync(ExecuteSqlRequest request, CallOptions options)

Executes an SQL statement, returning all results in a single reply. This method cannot be used to return a result set larger than 10 MiB; if the query yields more data than that, the query fails with a FAILED_PRECONDITION error.

Operations inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be fetched in streaming fashion by calling [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallResultSet

The call object.

ExecuteSqlAsync(ExecuteSqlRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<ResultSet> ExecuteSqlAsync(ExecuteSqlRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Executes an SQL statement, returning all results in a single reply. This method cannot be used to return a result set larger than 10 MiB; if the query yields more data than that, the query fails with a FAILED_PRECONDITION error.

Operations inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be fetched in streaming fashion by calling [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallResultSet

The call object.

ExecuteStreamingSql(ExecuteSqlRequest, CallOptions)

public virtual AsyncServerStreamingCall<PartialResultSet> ExecuteStreamingSql(ExecuteSqlRequest request, CallOptions options)

Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncServerStreamingCallPartialResultSet

The call object.

ExecuteStreamingSql(ExecuteSqlRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncServerStreamingCall<PartialResultSet> ExecuteStreamingSql(ExecuteSqlRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB.

Parameters
Name Description
request ExecuteSqlRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncServerStreamingCallPartialResultSet

The call object.

GetSession(GetSessionRequest, CallOptions)

public virtual Session GetSession(GetSessionRequest request, CallOptions options)

Gets a session. Returns NOT_FOUND if the session does not exist. This is mainly useful for determining whether a session is still alive.

Parameters
Name Description
request GetSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
Session

The response received from the server.

GetSession(GetSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual Session GetSession(GetSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Gets a session. Returns NOT_FOUND if the session does not exist. This is mainly useful for determining whether a session is still alive.

Parameters
Name Description
request GetSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
Session

The response received from the server.

GetSessionAsync(GetSessionRequest, CallOptions)

public virtual AsyncUnaryCall<Session> GetSessionAsync(GetSessionRequest request, CallOptions options)

Gets a session. Returns NOT_FOUND if the session does not exist. This is mainly useful for determining whether a session is still alive.

Parameters
Name Description
request GetSessionRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallSession

The call object.

GetSessionAsync(GetSessionRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<Session> GetSessionAsync(GetSessionRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Gets a session. Returns NOT_FOUND if the session does not exist. This is mainly useful for determining whether a session is still alive.

Parameters
Name Description
request GetSessionRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallSession

The call object.

ListSessions(ListSessionsRequest, CallOptions)

public virtual ListSessionsResponse ListSessions(ListSessionsRequest request, CallOptions options)

Lists all sessions in a given database.

Parameters
Name Description
request ListSessionsRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
ListSessionsResponse

The response received from the server.

ListSessions(ListSessionsRequest, Metadata, DateTime?, CancellationToken)

public virtual ListSessionsResponse ListSessions(ListSessionsRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Lists all sessions in a given database.

Parameters
Name Description
request ListSessionsRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
ListSessionsResponse

The response received from the server.

ListSessionsAsync(ListSessionsRequest, CallOptions)

public virtual AsyncUnaryCall<ListSessionsResponse> ListSessionsAsync(ListSessionsRequest request, CallOptions options)

Lists all sessions in a given database.

Parameters
Name Description
request ListSessionsRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallListSessionsResponse

The call object.

ListSessionsAsync(ListSessionsRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<ListSessionsResponse> ListSessionsAsync(ListSessionsRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Lists all sessions in a given database.

Parameters
Name Description
request ListSessionsRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallListSessionsResponse

The call object.

NewInstance(ClientBaseConfiguration)

protected override Spanner.SpannerClient NewInstance(ClientBase.ClientBaseConfiguration configuration)

Creates a new instance of client from given ClientBaseConfiguration.

Parameter
Name Description
configuration ClientBaseClientBaseConfiguration
Returns
Type Description
SpannerSpannerClient
Overrides
Grpc.Core.ClientBase<Google.Cloud.Spanner.V1.Spanner.SpannerClient>.NewInstance(Grpc.Core.ClientBase.ClientBaseConfiguration)

PartitionQuery(PartitionQueryRequest, CallOptions)

public virtual PartitionResponse PartitionQuery(PartitionQueryRequest request, CallOptions options)

Creates a set of partition tokens that can be used to execute a query operation in parallel. Each of the returned partition tokens can be used by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset of the query result to read. The same session and read-only transaction must be used by the PartitionQueryRequest used to create the partition tokens and the ExecuteSqlRequests that use the partition tokens.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the query, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionQueryRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
PartitionResponse

The response received from the server.

PartitionQuery(PartitionQueryRequest, Metadata, DateTime?, CancellationToken)

public virtual PartitionResponse PartitionQuery(PartitionQueryRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a set of partition tokens that can be used to execute a query operation in parallel. Each of the returned partition tokens can be used by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset of the query result to read. The same session and read-only transaction must be used by the PartitionQueryRequest used to create the partition tokens and the ExecuteSqlRequests that use the partition tokens.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the query, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionQueryRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
PartitionResponse

The response received from the server.

PartitionQueryAsync(PartitionQueryRequest, CallOptions)

public virtual AsyncUnaryCall<PartitionResponse> PartitionQueryAsync(PartitionQueryRequest request, CallOptions options)

Creates a set of partition tokens that can be used to execute a query operation in parallel. Each of the returned partition tokens can be used by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset of the query result to read. The same session and read-only transaction must be used by the PartitionQueryRequest used to create the partition tokens and the ExecuteSqlRequests that use the partition tokens.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the query, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionQueryRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallPartitionResponse

The call object.

PartitionQueryAsync(PartitionQueryRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<PartitionResponse> PartitionQueryAsync(PartitionQueryRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a set of partition tokens that can be used to execute a query operation in parallel. Each of the returned partition tokens can be used by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset of the query result to read. The same session and read-only transaction must be used by the PartitionQueryRequest used to create the partition tokens and the ExecuteSqlRequests that use the partition tokens.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the query, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionQueryRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallPartitionResponse

The call object.

PartitionRead(PartitionReadRequest, CallOptions)

public virtual PartitionResponse PartitionRead(PartitionReadRequest request, CallOptions options)

Creates a set of partition tokens that can be used to execute a read operation in parallel. Each of the returned partition tokens can be used by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read result to read. The same session and read-only transaction must be used by the PartitionReadRequest used to create the partition tokens and the ReadRequests that use the partition tokens. There are no ordering guarantees on rows returned among the returned partition tokens, or even within each individual StreamingRead call issued with a partition_token.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the read, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionReadRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
PartitionResponse

The response received from the server.

PartitionRead(PartitionReadRequest, Metadata, DateTime?, CancellationToken)

public virtual PartitionResponse PartitionRead(PartitionReadRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a set of partition tokens that can be used to execute a read operation in parallel. Each of the returned partition tokens can be used by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read result to read. The same session and read-only transaction must be used by the PartitionReadRequest used to create the partition tokens and the ReadRequests that use the partition tokens. There are no ordering guarantees on rows returned among the returned partition tokens, or even within each individual StreamingRead call issued with a partition_token.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the read, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionReadRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
PartitionResponse

The response received from the server.

PartitionReadAsync(PartitionReadRequest, CallOptions)

public virtual AsyncUnaryCall<PartitionResponse> PartitionReadAsync(PartitionReadRequest request, CallOptions options)

Creates a set of partition tokens that can be used to execute a read operation in parallel. Each of the returned partition tokens can be used by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read result to read. The same session and read-only transaction must be used by the PartitionReadRequest used to create the partition tokens and the ReadRequests that use the partition tokens. There are no ordering guarantees on rows returned among the returned partition tokens, or even within each individual StreamingRead call issued with a partition_token.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the read, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionReadRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallPartitionResponse

The call object.

PartitionReadAsync(PartitionReadRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<PartitionResponse> PartitionReadAsync(PartitionReadRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Creates a set of partition tokens that can be used to execute a read operation in parallel. Each of the returned partition tokens can be used by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read result to read. The same session and read-only transaction must be used by the PartitionReadRequest used to create the partition tokens and the ReadRequests that use the partition tokens. There are no ordering guarantees on rows returned among the returned partition tokens, or even within each individual StreamingRead call issued with a partition_token.

Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it is not possible to resume the read, and the whole operation must be restarted from the beginning.

Parameters
Name Description
request PartitionReadRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallPartitionResponse

The call object.

Read(ReadRequest, CallOptions)

public virtual ResultSet Read(ReadRequest request, CallOptions options)

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method cannot be used to return a result set larger than 10 MiB; if the read matches more data than that, the read fails with a FAILED_PRECONDITION error.

Reads inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be yielded in streaming fashion by calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.

Parameters
Name Description
request ReadRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
ResultSet

The response received from the server.

Read(ReadRequest, Metadata, DateTime?, CancellationToken)

public virtual ResultSet Read(ReadRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method cannot be used to return a result set larger than 10 MiB; if the read matches more data than that, the read fails with a FAILED_PRECONDITION error.

Reads inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be yielded in streaming fashion by calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.

Parameters
Name Description
request ReadRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
ResultSet

The response received from the server.

ReadAsync(ReadRequest, CallOptions)

public virtual AsyncUnaryCall<ResultSet> ReadAsync(ReadRequest request, CallOptions options)

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method cannot be used to return a result set larger than 10 MiB; if the read matches more data than that, the read fails with a FAILED_PRECONDITION error.

Reads inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be yielded in streaming fashion by calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.

Parameters
Name Description
request ReadRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallResultSet

The call object.

ReadAsync(ReadRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<ResultSet> ReadAsync(ReadRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method cannot be used to return a result set larger than 10 MiB; if the read matches more data than that, the read fails with a FAILED_PRECONDITION error.

Reads inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.

Larger result sets can be yielded in streaming fashion by calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.

Parameters
Name Description
request ReadRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallResultSet

The call object.

Rollback(RollbackRequest, CallOptions)

public virtual Empty Rollback(RollbackRequest request, CallOptions options)

Rolls back a transaction, releasing any locks it holds. It is a good idea to call this for any transaction that includes one or more [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and ultimately decides not to commit.

Rollback returns OK if it successfully aborts the transaction, the transaction was already aborted, or the transaction is not found. Rollback never returns ABORTED.

Parameters
Name Description
request RollbackRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
Empty

The response received from the server.

Rollback(RollbackRequest, Metadata, DateTime?, CancellationToken)

public virtual Empty Rollback(RollbackRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Rolls back a transaction, releasing any locks it holds. It is a good idea to call this for any transaction that includes one or more [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and ultimately decides not to commit.

Rollback returns OK if it successfully aborts the transaction, the transaction was already aborted, or the transaction is not found. Rollback never returns ABORTED.

Parameters
Name Description
request RollbackRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
Empty

The response received from the server.

RollbackAsync(RollbackRequest, CallOptions)

public virtual AsyncUnaryCall<Empty> RollbackAsync(RollbackRequest request, CallOptions options)

Rolls back a transaction, releasing any locks it holds. It is a good idea to call this for any transaction that includes one or more [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and ultimately decides not to commit.

Rollback returns OK if it successfully aborts the transaction, the transaction was already aborted, or the transaction is not found. Rollback never returns ABORTED.

Parameters
Name Description
request RollbackRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncUnaryCallEmpty

The call object.

RollbackAsync(RollbackRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncUnaryCall<Empty> RollbackAsync(RollbackRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Rolls back a transaction, releasing any locks it holds. It is a good idea to call this for any transaction that includes one or more [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and ultimately decides not to commit.

Rollback returns OK if it successfully aborts the transaction, the transaction was already aborted, or the transaction is not found. Rollback never returns ABORTED.

Parameters
Name Description
request RollbackRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncUnaryCallEmpty

The call object.

StreamingRead(ReadRequest, CallOptions)

public virtual AsyncServerStreamingCall<PartialResultSet> StreamingRead(ReadRequest request, CallOptions options)

Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB.

Parameters
Name Description
request ReadRequest

The request to send to the server.
options CallOptions

The options for the call.
Returns
Type Description
AsyncServerStreamingCallPartialResultSet

The call object.

StreamingRead(ReadRequest, Metadata, DateTime?, CancellationToken)

public virtual AsyncServerStreamingCall<PartialResultSet> StreamingRead(ReadRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default)

Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB.

Parameters
Name Description
request ReadRequest

The request to send to the server.
headers Metadata

The initial metadata to send with the call. This parameter is optional.
deadline DateTime

An optional deadline for the call. The call will be cancelled if deadline is hit.
cancellationToken CancellationToken

An optional token for canceling the call.
Returns
Type Description
AsyncServerStreamingCallPartialResultSet

The call object.