Class Spanner

[Cloud Spanner]( https://cloud.google.com/spanner ) is a highly scalable, transactional, managed, NewSQL database service. Cloud Spanner solves the need for a horizontally-scaling database with consistent global transaction and SQL semantics. With Cloud Spanner you don't need to choose between consistency and horizontal scaling — you get both.

[Cloud Spanner Documentation]( https://cloud.google.com/spanner/docs ) [Cloud Spanner Concepts]( https://cloud.google.com/spanner/docs/concepts )

Inheritance

GrpcService > Spanner

Package

@google-cloud/spanner!

Constructors

(constructor)(options)

  constructor 
 ( 
 options 
 ?: 
  
 SpannerOptions 
 );

Constructs a new instance of the Spanner class

Parameter

Type	Name	Description
SpannerOptions	options

Properties

auth

  auth 
 : 
  
 GoogleAuth 
 ;

Property Value

Type	Description
GoogleAuth

clients_

  clients_ 
 : 
  
 Map<string 
 , 
  
 {}>;

Property Value

Type	Description
Map <string, {}>

COMMIT_TIMESTAMP

  static 
  
 COMMIT_TIMESTAMP 
 : 
  
 string 
 ;

Placeholder used to auto populate a column with the commit timestamp. This can only be used for timestamp columns that have set the option "(allow_commit_timestamp=true)" in the schema.

{string}

Property Value

Type	Description
string

instances_

  instances_ 
 : 
  
 Map<string 
 , 
  
 Instance 
> ;

Property Value

Type	Description
Map <string, Instance >

options

  options 
 : 
  
 GoogleAuthOptions 
 ;

Property Value

Type	Description
GoogleAuthOptions

projectFormattedName_

  projectFormattedName_ 
 : 
  
 string 
 ;

Property Value

Type	Description
string

resourceHeader_

  resourceHeader_ 
 : 
  
 { 
  
 [ 
 k 
 : 
  
 string 
 ] 
 : 
  
 string 
 ; 
  
 };

Property Value

Type	Description
{ [k: string]: string; }

Methods

createInstance(name, config)

  createInstance 
 ( 
 name 
 : 
  
 string 
 , 
  
 config 
 : 
  
 CreateInstanceRequest 
 ) 
 : 
  
 Promise<CreateInstanceResponse> 
 ;

Parameters

Type	Name	Description
string	name
CreateInstanceRequest	config

Returns

Type	Description
Promise < CreateInstanceResponse >

createInstance(name, config, callback)

  createInstance 
 ( 
 name 
 : 
  
 string 
 , 
  
 config 
 : 
  
 CreateInstanceRequest 
 , 
  
 callback 
 : 
  
 CreateInstanceCallback 
 ) 
 : 
  
 void 
 ;

Parameters

Type	Name	Description
string	name
CreateInstanceRequest	config
CreateInstanceCallback	callback

Returns

Type	Description
void

date(dateString)

  static 
  
 date 
 ( 
 dateString 
 ?: 
  
 string 
 ) 
 : 
  
 any 
 ;

Parameter

Type	Name	Description
string	dateString

Returns

Type	Description
any

date(year, month, date)

  static 
  
 date 
 ( 
 year 
 : 
  
 number 
 , 
  
 month 
 : 
  
 number 
 , 
  
 date 
 : 
  
 number 
 ) 
 : 
  
 any 
 ;

Parameters

Type	Name	Description
number	year
number	month
number	date

Returns

Type	Description
any

float(value)

  static 
  
 float 
 ( 
 value 
 : 
  
 any 
 ) 
 : 
  
 Float 
 ;

Helper function to get a Cloud Spanner Float64 object.

Parameter

Type	Name	Description
any	value	The float as a number or string.

Returns

Type	Description
Float	{Float}

getInstanceConfigs(query)

  getInstanceConfigs 
 ( 
 query 
 ?: 
  
 GetInstanceConfigsOptions 
 ) 
 : 
  
 Promise<GetInstanceConfigsResponse> 
 ;

Parameter

Type	Name	Description
GetInstanceConfigsOptions	query

Returns

Type	Description
Promise < GetInstanceConfigsResponse >

getInstanceConfigs(callback)

  getInstanceConfigs 
 ( 
 callback 
 : 
  
 GetInstanceConfigsCallback 
 ) 
 : 
  
 void 
 ;

Parameter

Type	Name	Description
GetInstanceConfigsCallback	callback

Returns

Type	Description
void

getInstanceConfigs(query, callback)

  getInstanceConfigs 
 ( 
 query 
 : 
  
 GetInstanceConfigsOptions 
 , 
  
 callback 
 : 
  
 GetInstanceConfigsCallback 
 ) 
 : 
  
 void 
 ;

Parameters

Type	Name	Description
GetInstanceConfigsOptions	query
GetInstanceConfigsCallback	callback

Returns

Type	Description
void

getInstanceConfigsStream(options)

  getInstanceConfigsStream 
 ( 
 options 
 ?: 
  
 GetInstanceConfigsOptions 
 ) 
 : 
  
 NodeJS 
 . 
 ReadableStream 
 ;

Get a list of instance configs as a readable object stream.

Wrapper around .

[ListInstanceConfigs API Documentation](https://cloud.google.com/spanner/docs/reference/rpc/google.spanner.admin.instance.v1#google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs)

Spanner#getInstanceConfigsStream

Parameter

Type	Name	Description
GetInstanceConfigsOptions	options	Query object for listing instance configs.

Returns

Type	Description
NodeJS.ReadableStream	{ReadableStream} A readable stream that emits instance configs.

getInstances(options)

  getInstances 
 ( 
 options 
 ?: 
  
 GetInstancesOptions 
 ) 
 : 
  
 Promise<GetInstancesResponse> 
 ;

Parameter

Type	Name	Description
GetInstancesOptions	options

Returns

Type	Description
Promise < GetInstancesResponse >

getInstances(callback)

  getInstances 
 ( 
 callback 
 : 
  
 GetInstancesCallback 
 ) 
 : 
  
 void 
 ;

Parameter

Type	Name	Description
GetInstancesCallback	callback

Returns

Type	Description
void

getInstances(query, callback)

  getInstances 
 ( 
 query 
 : 
  
 GetInstancesOptions 
 , 
  
 callback 
 : 
  
 GetInstancesCallback 
 ) 
 : 
  
 void 
 ;

Parameters

Type	Name	Description
GetInstancesOptions	query
GetInstancesCallback	callback

Returns

Type	Description
void

getInstancesStream(options)

  getInstancesStream 
 ( 
 options 
 ?: 
  
 GetInstancesOptions 
 ) 
 : 
  
 NodeJS 
 . 
 ReadableStream 
 ;

Get a list of Instance objects as a readable object stream.

Wrapper around .

[ListInstances API Documentation](https://cloud.google.com/spanner/docs/reference/rpc/google.spanner.admin.instance.v1#google.spanner.admin.instance.v1.InstanceAdmin.ListInstances)

Spanner#getInstancesStream

Parameter

Type	Name	Description
GetInstancesOptions	options	Query object for listing instances.

Returns

Type	Description
NodeJS.ReadableStream	{ReadableStream} A readable stream that emits Instance instances.

getSpannerEmulatorHost()

  static 
  
 getSpannerEmulatorHost 
 () 
 : 
  
 { 
  
 endpoint 
 : 
  
 string 
 ; 
  
 port 
 ?: 
  
 number 
 ; 
  
 } 
  
 | 
  
 undefined 
 ;

Gets the configured Spanner emulator host from an environment variable.

Returns

Type	Description
{ endpoint: string; port?: number; } \| undefined

instance(name)

  instance 
 ( 
 name 
 : 
  
 string 
 ) 
 : 
  
 Instance 
 ;

Get a reference to an Instance object.

Parameter

Type	Name	Description
string	name	The name of the instance.

Returns

Type	Description
Instance	{Instance} An Instance object.

int(value)

  static 
  
 int 
 ( 
 value 
 : 
  
 any 
 ) 
 : 
  
 Int 
 ;

Helper function to get a Cloud Spanner Int64 object.

Parameter

Type	Name	Description
any	value	The int as a number or string.

Returns

Type	Description
Int	{Int}

numeric(value)

  static 
  
 numeric 
 ( 
 value 
 : 
  
 any 
 ) 
 : 
  
 Numeric 
 ;

Helper function to get a Cloud Spanner Numeric object.

Parameter

Type	Name	Description
any	value	The numeric value as a string.

Returns

Type	Description
Numeric	{Numeric}

prepareGapicRequest_(config, callback)

  prepareGapicRequest_ 
 ( 
 config 
 : 
  
 any 
 , 
  
 callback 
 : 
  
 any 
 ) 
 : 
  
 void 
 ;

Prepare a gapic request. This will cache the GAX client and replace {{projectId}} placeholders, if necessary.

Parameters

Type	Name	Description
any	config	Request config
any	callback	Callback function

Returns

Type	Description
void

request(config, callback)

  request 
 ( 
 config 
 : 
  
 any 
 , 
  
 callback 
 ?: 
  
 any 
 ) 
 : 
  
 any 
 ;

Funnel all API requests through this method to be sure we have a project ID.

Parameters

Type	Name	Description
any	config	Configuration object.
any	callback	Callback function.

Returns

Type	Description
any	{Promise}

requestStream(config)

  requestStream 
 ( 
 config 
 : 
  
 any 
 ) 
 : 
  
 any 
 ;

Funnel all streaming API requests through this method to be sure we have a project ID.

Parameter

Type	Name	Description
any	config	Configuration object.

Returns

Type	Description
any	{Stream}

struct(value)

  static 
  
 struct 
 ( 
 value 
 ?: 
  
 any 
 ) 
 : 
  
 Struct 
 ;

Helper function to get a Cloud Spanner Struct object.

Parameter

Type	Name	Description
any	value	The struct as a JSON object.

Returns

Type	Description
Struct	{Struct}

timestamp(value)

  static 
  
 timestamp 
 ( 
 value 
 ?: 
  
 string 
  
 | 
  
 number 
  
 | 
  
 p 
 . 
 ITimestamp 
  
 | 
  
 PreciseDate 
 ) 
 : 
  
 PreciseDate 
 ;

Helper function to get a Cloud Spanner Timestamp object.

String timestamps should have a canonical format of YYYY-[M]M-[D]D[( |T)[H]H:[M]M:[S]S[.DDDDDDDDD]]Z

**Timestamp values must be expressed in Zulu time and cannot include a UTC offset.**

https://cloud.google.com/spanner/docs/data-types#timestamp-type

Parameter

Type	Name	Description
string \| number \| common.ITimestamp \| PreciseDate	value

Returns

Type	Description
PreciseDate	{external:PreciseDate}

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Inheritance

Package

Constructors

(constructor)(options)

Properties

auth

clients_

COMMIT_TIMESTAMP

instances_

options

projectFormattedName_

resourceHeader_

Methods

createInstance(name, config)

createInstance(name, config, callback)

date(dateString)

date(year, month, date)

float(value)

getInstanceConfigs(query)

getInstanceConfigs(callback)

getInstanceConfigs(query, callback)

getInstanceConfigsStream(options)

getInstances(options)

getInstances(callback)

getInstances(query, callback)

getInstancesStream(options)

getSpannerEmulatorHost()

instance(name)

int(value)

numeric(value)

prepareGapicRequest_(config, callback)

request(config, callback)

requestStream(config)

struct(value)

timestamp(value)

Class Spanner