Class v1.SpannerClient (7.5.0)

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Cloud Spanner API

The Cloud Spanner API can be used to manage sessions and execute transactions on data stored in Cloud Spanner databases. v1

Package

@google-cloud/spanner

Constructors

(constructor)(opts, gaxInstance)

constructor(opts?: ClientOptions, gaxInstance?: typeof gax | typeof gax.fallback);

Construct an instance of SpannerClient.

Parameters
Name	Description
opts	ClientOptions
gaxInstance	typeof gax | typeof fallback : loaded instance of google-gax. Useful if you need to avoid loading the default gRPC version and want to use the fallback HTTP implementation. Load only fallback version and pass it to the constructor: ``` const gax = require('google-gax/build/src/fallback'); // avoids loading google-gax with gRPC const client = new SpannerClient({fallback: true}, gax); ```

Properties

apiEndpoint

get apiEndpoint(): string;

The DNS address for this API service.

apiEndpoint

static get apiEndpoint(): string;

The DNS address for this API service - same as servicePath.

auth

auth: gax.GoogleAuth;

descriptors

descriptors: Descriptors;

innerApiCalls

innerApiCalls: {
        [name: string]: Function;
    };

pathTemplates

pathTemplates: {
        [name: string]: gax.PathTemplate;
    };

port

static get port(): number;

The port for this API service.

scopes

static get scopes(): string[];

The scopes needed to make gRPC calls for every method defined in this service.

servicePath

static get servicePath(): string;

The DNS address for this API service.

spannerStub

spannerStub?: Promise<{
        [name: string]: Function;
    }>;

universeDomain

get universeDomain(): string;

warn

warn: (code: string, message: string, warnType?: string) => void;

Methods

batchCreateSessions(request, options)

batchCreateSessions(request?: protos.google.spanner.v1.IBatchCreateSessionsRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IBatchCreateSessionsResponse,
        protos.google.spanner.v1.IBatchCreateSessionsRequest | undefined,
        {} | undefined
    ]>;

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	IBatchCreateSessionsRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IBatchCreateSessionsResponse, protos.google.spanner.v1.IBatchCreateSessionsRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing BatchCreateSessionsResponse. Please see the documentation for more details and examples.

batchCreateSessions(request, options, callback)

batchCreateSessions(request: protos.google.spanner.v1.IBatchCreateSessionsRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IBatchCreateSessionsResponse, protos.google.spanner.v1.IBatchCreateSessionsRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IBatchCreateSessionsRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IBatchCreateSessionsResponse, protos.google.spanner.v1.IBatchCreateSessionsRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

batchCreateSessions(request, callback)

batchCreateSessions(request: protos.google.spanner.v1.IBatchCreateSessionsRequest, callback: Callback<protos.google.spanner.v1.IBatchCreateSessionsResponse, protos.google.spanner.v1.IBatchCreateSessionsRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IBatchCreateSessionsRequest
callback	Callback<protos.google.spanner.v1.IBatchCreateSessionsResponse, protos.google.spanner.v1.IBatchCreateSessionsRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

batchWrite(request, options)

batchWrite(request?: protos.google.spanner.v1.IBatchWriteRequest, options?: CallOptions): gax.CancellableStream;

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	IBatchWriteRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
gax.CancellableStream	{Stream} An object stream which emits BatchWriteResponse on 'data' event. Please see the documentation for more details and examples.

beginTransaction(request, options)

beginTransaction(request?: protos.google.spanner.v1.IBeginTransactionRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.ITransaction,
        protos.google.spanner.v1.IBeginTransactionRequest | undefined,
        {} | undefined
    ]>;

Begins a new transaction. This step can often be skipped: , and can begin a new transaction as a side-effect.

Parameters
Name	Description
request	IBeginTransactionRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.ITransaction, protos.google.spanner.v1.IBeginTransactionRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing Transaction. Please see the documentation for more details and examples.

beginTransaction(request, options, callback)

beginTransaction(request: protos.google.spanner.v1.IBeginTransactionRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.ITransaction, protos.google.spanner.v1.IBeginTransactionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IBeginTransactionRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.ITransaction, protos.google.spanner.v1.IBeginTransactionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

beginTransaction(request, callback)

beginTransaction(request: protos.google.spanner.v1.IBeginTransactionRequest, callback: Callback<protos.google.spanner.v1.ITransaction, protos.google.spanner.v1.IBeginTransactionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IBeginTransactionRequest
callback	Callback<protos.google.spanner.v1.ITransaction, protos.google.spanner.v1.IBeginTransactionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

close()

close(): Promise<void>;

Terminate the gRPC channel and close the client.

The client will no longer be usable and all future behavior is undefined.

Returns
Type	Description
Promise<void>	{Promise} A promise that resolves when the client is closed.

commit(request, options)

commit(request?: protos.google.spanner.v1.ICommitRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.ICommitResponse,
        protos.google.spanner.v1.ICommitRequest | undefined,
        {} | undefined
    ]>;

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	ICommitRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.ICommitResponse, protos.google.spanner.v1.ICommitRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing . Please see the documentation for more details and examples.

commit(request, options, callback)

commit(request: protos.google.spanner.v1.ICommitRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.ICommitResponse, protos.google.spanner.v1.ICommitRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	ICommitRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.ICommitResponse, protos.google.spanner.v1.ICommitRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

commit(request, callback)

commit(request: protos.google.spanner.v1.ICommitRequest, callback: Callback<protos.google.spanner.v1.ICommitResponse, protos.google.spanner.v1.ICommitRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	ICommitRequest
callback	Callback<protos.google.spanner.v1.ICommitResponse, protos.google.spanner.v1.ICommitRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

createSession(request, options)

createSession(request?: protos.google.spanner.v1.ICreateSessionRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.ISession,
        protos.google.spanner.v1.ICreateSessionRequest | undefined,
        {} | undefined
    ]>;

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	ICreateSessionRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.ISession, protos.google.spanner.v1.ICreateSessionRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing Session. Please see the documentation for more details and examples.

createSession(request, options, callback)

createSession(request: protos.google.spanner.v1.ICreateSessionRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.ICreateSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	ICreateSessionRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.ICreateSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

createSession(request, callback)

createSession(request: protos.google.spanner.v1.ICreateSessionRequest, callback: Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.ICreateSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	ICreateSessionRequest
callback	Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.ICreateSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

databasePath(project, instance, database)

databasePath(project: string, instance: string, database: string): string;

Return a fully-qualified database resource name string.

Parameters
Name	Description
project	string
instance	string
database	string

Returns
Type	Description
string	{string} Resource name string.

deleteSession(request, options)

deleteSession(request?: protos.google.spanner.v1.IDeleteSessionRequest, options?: CallOptions): Promise<[
        protos.google.protobuf.IEmpty,
        protos.google.spanner.v1.IDeleteSessionRequest | undefined,
        {} | undefined
    ]>;

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	IDeleteSessionRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.protobuf.IEmpty, protos.google.spanner.v1.IDeleteSessionRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing Empty. Please see the documentation for more details and examples.

deleteSession(request, options, callback)

deleteSession(request: protos.google.spanner.v1.IDeleteSessionRequest, options: CallOptions, callback: Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IDeleteSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IDeleteSessionRequest
options	CallOptions
callback	Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IDeleteSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

deleteSession(request, callback)

deleteSession(request: protos.google.spanner.v1.IDeleteSessionRequest, callback: Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IDeleteSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IDeleteSessionRequest
callback	Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IDeleteSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

executeBatchDml(request, options)

executeBatchDml(request?: protos.google.spanner.v1.IExecuteBatchDmlRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IExecuteBatchDmlResponse,
        protos.google.spanner.v1.IExecuteBatchDmlRequest | undefined,
        {} | undefined
    ]>;

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with .

Statements are executed in sequential order. A request can succeed even if a statement fails. The 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	IExecuteBatchDmlRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IExecuteBatchDmlResponse, protos.google.spanner.v1.IExecuteBatchDmlRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing ExecuteBatchDmlResponse. Please see the documentation for more details and examples.

executeBatchDml(request, options, callback)

executeBatchDml(request: protos.google.spanner.v1.IExecuteBatchDmlRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IExecuteBatchDmlResponse, protos.google.spanner.v1.IExecuteBatchDmlRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IExecuteBatchDmlRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IExecuteBatchDmlResponse, protos.google.spanner.v1.IExecuteBatchDmlRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

executeBatchDml(request, callback)

executeBatchDml(request: protos.google.spanner.v1.IExecuteBatchDmlRequest, callback: Callback<protos.google.spanner.v1.IExecuteBatchDmlResponse, protos.google.spanner.v1.IExecuteBatchDmlRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IExecuteBatchDmlRequest
callback	Callback<protos.google.spanner.v1.IExecuteBatchDmlResponse, protos.google.spanner.v1.IExecuteBatchDmlRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

executeSql(request, options)

executeSql(request?: protos.google.spanner.v1.IExecuteSqlRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IResultSet,
        protos.google.spanner.v1.IExecuteSqlRequest | undefined,
        {} | undefined
    ]>;

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 for more details.

Larger result sets can be fetched in streaming fashion by calling instead.

Parameters
Name	Description
request	IExecuteSqlRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IExecuteSqlRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing ResultSet. Please see the documentation for more details and examples.

executeSql(request, options, callback)

executeSql(request: protos.google.spanner.v1.IExecuteSqlRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IExecuteSqlRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IExecuteSqlRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IExecuteSqlRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

executeSql(request, callback)

executeSql(request: protos.google.spanner.v1.IExecuteSqlRequest, callback: Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IExecuteSqlRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IExecuteSqlRequest
callback	Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IExecuteSqlRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

executeStreamingSql(request, options)

executeStreamingSql(request?: protos.google.spanner.v1.IExecuteSqlRequest, options?: CallOptions): gax.CancellableStream;

Like , except returns the result set as a stream. Unlike , 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	IExecuteSqlRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
gax.CancellableStream	{Stream} An object stream which emits PartialResultSet on 'data' event. Please see the documentation for more details and examples.

getProjectId()

getProjectId(): Promise<string>;

Returns
Type	Description
Promise<string>

getProjectId(callback)

getProjectId(callback: Callback<string, undefined, undefined>): void;

Parameter
Name	Description
callback	Callback<string, undefined, undefined>

Returns
Type	Description
void

getSession(request, options)

getSession(request?: protos.google.spanner.v1.IGetSessionRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.ISession,
        protos.google.spanner.v1.IGetSessionRequest | undefined,
        {} | undefined
    ]>;

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	IGetSessionRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.ISession, protos.google.spanner.v1.IGetSessionRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing Session. Please see the documentation for more details and examples.

getSession(request, options, callback)

getSession(request: protos.google.spanner.v1.IGetSessionRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.IGetSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IGetSessionRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.IGetSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

getSession(request, callback)

getSession(request: protos.google.spanner.v1.IGetSessionRequest, callback: Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.IGetSessionRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IGetSessionRequest
callback	Callback<protos.google.spanner.v1.ISession, protos.google.spanner.v1.IGetSessionRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

initialize()

initialize(): Promise<{
        [name: string]: Function;
    }>;

Initialize the client. Performs asynchronous operations (such as authentication) and prepares the client. This function will be called automatically when any class method is called for the first time, but if you need to initialize it before calling an actual method, feel free to call initialize() directly.

You can await on this method if you want to make sure the client is initialized.

Returns
Type	Description
Promise<{ [name: string]: Function; }>	{Promise} A promise that resolves to an authenticated service stub.

listSessions(request, options)

listSessions(request?: protos.google.spanner.v1.IListSessionsRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.ISession[],
        protos.google.spanner.v1.IListSessionsRequest | null,
        protos.google.spanner.v1.IListSessionsResponse
    ]>;

Lists all sessions in a given database.

Parameters
Name	Description
request	IListSessionsRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.ISession[], protos.google.spanner.v1.IListSessionsRequest | null, protos.google.spanner.v1.IListSessionsResponse ]>	{Promise} - The promise which resolves to an array. The first element of the array is Array of Session. The client library will perform auto-pagination by default: it will call the API as many times as needed and will merge results from all the pages into this array. Note that it can affect your quota. We recommend using listSessionsAsync() method described below for async iteration which you can stop as needed. Please see the documentation for more details and examples.

listSessions(request, options, callback)

listSessions(request: protos.google.spanner.v1.IListSessionsRequest, options: CallOptions, callback: PaginationCallback<protos.google.spanner.v1.IListSessionsRequest, protos.google.spanner.v1.IListSessionsResponse | null | undefined, protos.google.spanner.v1.ISession>): void;

Parameters
Name	Description
request	IListSessionsRequest
options	CallOptions
callback	PaginationCallback<protos.google.spanner.v1.IListSessionsRequest, protos.google.spanner.v1.IListSessionsResponse | null | undefined, protos.google.spanner.v1.ISession>

Returns
Type	Description
void

listSessions(request, callback)

listSessions(request: protos.google.spanner.v1.IListSessionsRequest, callback: PaginationCallback<protos.google.spanner.v1.IListSessionsRequest, protos.google.spanner.v1.IListSessionsResponse | null | undefined, protos.google.spanner.v1.ISession>): void;

Parameters
Name	Description
request	IListSessionsRequest
callback	PaginationCallback<protos.google.spanner.v1.IListSessionsRequest, protos.google.spanner.v1.IListSessionsResponse | null | undefined, protos.google.spanner.v1.ISession>

Returns
Type	Description
void

listSessionsAsync(request, options)

listSessionsAsync(request?: protos.google.spanner.v1.IListSessionsRequest, options?: CallOptions): AsyncIterable<protos.google.spanner.v1.ISession>;

Equivalent to listSessions, but returns an iterable object.

for-await-of syntax is used with the iterable to get response elements on-demand.

Parameters
Name	Description
request	IListSessionsRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
AsyncIterable<protos.google.spanner.v1.ISession>	{Object} An iterable Object that allows async iteration. When you iterate the returned iterable, each element will be an object representing Session. The API will be called under the hood as needed, once per the page, so you can stop the iteration when you don't need more results. Please see the documentation for more details and examples.

listSessionsStream(request, options)

listSessionsStream(request?: protos.google.spanner.v1.IListSessionsRequest, options?: CallOptions): Transform;

Equivalent to method.name.toCamelCase(), but returns a NodeJS Stream object.

Parameters
Name	Description
request	IListSessionsRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Transform	{Stream} An object stream which emits an object representing Session on 'data' event. The client library will perform auto-pagination by default: it will call the API as many times as needed. Note that it can affect your quota. We recommend using listSessionsAsync() method described below for async iteration which you can stop as needed. Please see the documentation for more details and examples.

matchDatabaseFromDatabaseName(databaseName)

matchDatabaseFromDatabaseName(databaseName: string): string | number;

Parse the database from Database resource.

Parameter
Name	Description
databaseName	string A fully-qualified path representing Database resource.

Returns
Type	Description
string | number	{string} A string representing the database.

matchDatabaseFromSessionName(sessionName)

matchDatabaseFromSessionName(sessionName: string): string | number;

Parse the database from Session resource.

Parameter
Name	Description
sessionName	string A fully-qualified path representing Session resource.

Returns
Type	Description
string | number	{string} A string representing the database.

matchInstanceFromDatabaseName(databaseName)

matchInstanceFromDatabaseName(databaseName: string): string | number;

Parse the instance from Database resource.

Parameter
Name	Description
databaseName	string A fully-qualified path representing Database resource.

Returns
Type	Description
string | number	{string} A string representing the instance.

matchInstanceFromSessionName(sessionName)

matchInstanceFromSessionName(sessionName: string): string | number;

Parse the instance from Session resource.

Parameter
Name	Description
sessionName	string A fully-qualified path representing Session resource.

Returns
Type	Description
string | number	{string} A string representing the instance.

matchProjectFromDatabaseName(databaseName)

matchProjectFromDatabaseName(databaseName: string): string | number;

Parse the project from Database resource.

Parameter
Name	Description
databaseName	string A fully-qualified path representing Database resource.

Returns
Type	Description
string | number	{string} A string representing the project.

matchProjectFromSessionName(sessionName)

matchProjectFromSessionName(sessionName: string): string | number;

Parse the project from Session resource.

Parameter
Name	Description
sessionName	string A fully-qualified path representing Session resource.

Returns
Type	Description
string | number	{string} A string representing the project.

matchSessionFromSessionName(sessionName)

matchSessionFromSessionName(sessionName: string): string | number;

Parse the session from Session resource.

Parameter
Name	Description
sessionName	string A fully-qualified path representing Session resource.

Returns
Type	Description
string | number	{string} A string representing the session.

partitionQuery(request, options)

partitionQuery(request?: protos.google.spanner.v1.IPartitionQueryRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IPartitionResponse,
        protos.google.spanner.v1.IPartitionQueryRequest | undefined,
        {} | undefined
    ]>;

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 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	IPartitionQueryRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionQueryRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing PartitionResponse. Please see the documentation for more details and examples.

partitionQuery(request, options, callback)

partitionQuery(request: protos.google.spanner.v1.IPartitionQueryRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionQueryRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IPartitionQueryRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionQueryRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

partitionQuery(request, callback)

partitionQuery(request: protos.google.spanner.v1.IPartitionQueryRequest, callback: Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionQueryRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IPartitionQueryRequest
callback	Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionQueryRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

partitionRead(request, options)

partitionRead(request?: protos.google.spanner.v1.IPartitionReadRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IPartitionResponse,
        protos.google.spanner.v1.IPartitionReadRequest | undefined,
        {} | undefined
    ]>;

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 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	IPartitionReadRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionReadRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing PartitionResponse. Please see the documentation for more details and examples.

partitionRead(request, options, callback)

partitionRead(request: protos.google.spanner.v1.IPartitionReadRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionReadRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IPartitionReadRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionReadRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

partitionRead(request, callback)

partitionRead(request: protos.google.spanner.v1.IPartitionReadRequest, callback: Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionReadRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IPartitionReadRequest
callback	Callback<protos.google.spanner.v1.IPartitionResponse, protos.google.spanner.v1.IPartitionReadRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

read(request, options)

read(request?: protos.google.spanner.v1.IReadRequest, options?: CallOptions): Promise<[
        protos.google.spanner.v1.IResultSet,
        protos.google.spanner.v1.IReadRequest | undefined,
        {} | undefined
    ]>;

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to . 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 for more details.

Larger result sets can be yielded in streaming fashion by calling instead.

Parameters
Name	Description
request	IReadRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IReadRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing ResultSet. Please see the documentation for more details and examples.

read(request, options, callback)

read(request: protos.google.spanner.v1.IReadRequest, options: CallOptions, callback: Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IReadRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IReadRequest
options	CallOptions
callback	Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IReadRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

read(request, callback)

read(request: protos.google.spanner.v1.IReadRequest, callback: Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IReadRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IReadRequest
callback	Callback<protos.google.spanner.v1.IResultSet, protos.google.spanner.v1.IReadRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

rollback(request, options)

rollback(request?: protos.google.spanner.v1.IRollbackRequest, options?: CallOptions): Promise<[
        protos.google.protobuf.IEmpty,
        protos.google.spanner.v1.IRollbackRequest | undefined,
        {} | undefined
    ]>;

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 or 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	IRollbackRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
Promise<[ protos.google.protobuf.IEmpty, protos.google.spanner.v1.IRollbackRequest | undefined, {} | undefined ]>	{Promise} - The promise which resolves to an array. The first element of the array is an object representing Empty. Please see the documentation for more details and examples.

rollback(request, options, callback)

rollback(request: protos.google.spanner.v1.IRollbackRequest, options: CallOptions, callback: Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IRollbackRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IRollbackRequest
options	CallOptions
callback	Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IRollbackRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

rollback(request, callback)

rollback(request: protos.google.spanner.v1.IRollbackRequest, callback: Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IRollbackRequest | null | undefined, {} | null | undefined>): void;

Parameters
Name	Description
request	IRollbackRequest
callback	Callback<protos.google.protobuf.IEmpty, protos.google.spanner.v1.IRollbackRequest | null | undefined, {} | null | undefined>

Returns
Type	Description
void

sessionPath(project, instance, database, session)

sessionPath(project: string, instance: string, database: string, session: string): string;

Return a fully-qualified session resource name string.

Parameters
Name	Description
project	string
instance	string
database	string
session	string

Returns
Type	Description
string	{string} Resource name string.

streamingRead(request, options)

streamingRead(request?: protos.google.spanner.v1.IReadRequest, options?: CallOptions): gax.CancellableStream;

Like , except returns the result set as a stream. Unlike , 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	IReadRequest The request object that will be sent.
options	CallOptions Call options. See CallOptions for more details.

Returns
Type	Description
gax.CancellableStream	{Stream} An object stream which emits PartialResultSet on 'data' event. Please see the documentation for more details and examples.