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    Class Datastore

    Idiomatic class for interacting with Cloud Datastore. Uses the lower-level class under the hood.

    In addition to the constructor options shown here, the Datastore class constructor accepts the same options accepted by .

    The Datastore Emulator

    Make sure you have the gcloud SDK installed , then run:

    $ gcloud beta emulators datastore start --no-legacy

    You will see the following printed:

    \[datastore\] API endpoint: http://localhost:8005 \[datastore\] If you are using a library that supports the DATASTORE\_EMULATOR\_HOST environment variable, run: \[datastore\] \[datastore\] export DATASTORE\_EMULATOR\_HOST=localhost:8005 \[datastore\] \[datastore\] Dev App Server is now running.

    Set that environment variable and your localhost Datastore will automatically be used. You can also pass this address in manually with apiEndpoint .

    Additionally, DATASTORE_PROJECT_ID is recognized. If you have this set, you don't need to provide a projectId .

    {DatastoreRequest}

    [Cloud Datastore Concepts Overview] https://cloud.google.com/datastore/docs/concepts/overview

    Inheritance

    DatastoreRequest > Datastore

    Package

    @google-cloud/datastore!

    Constructors

    (constructor)(options)

      constructor 
 ( 
 options 
 ?: 
  
 DatastoreOptions 
 );

    Constructs a new instance of the Datastore class

    Parameter
    Type Name Description
    DatastoreOptions
    		options

    Properties

    auth

      auth 
 : 
  
 GoogleAuth 
 ;
    Property Value
    Type Description
    GoogleAuth

    baseUrl_

      baseUrl_ 
 ?: 
  
 string 
 ;
    Property Value
    Type Description
    string

    clients_

      clients_ 
 : 
  
 Map<string 
 , 
  
 ClientStub 
> ;
    Property Value
    Type Description
    Map <string, ClientStub >

    customEndpoint_

      customEndpoint_ 
 ?: 
  
 boolean 
 ;
    Property Value
    Type Description
    boolean

    DatastoreRequest

      DatastoreRequest 
 : 
  
 typeof 
  
 DatastoreRequest 
 ;

    DatastoreRequest class.

    Datastore.DatastoreRequest DatastoreRequest {constructor}

    Property Value
    Type Description
    typeof DatastoreRequest

    defaultBaseUrl_

      defaultBaseUrl_ 
 : 
  
 string 
 ;
    Property Value
    Type Description
    string

    KEY

      KEY 
 : 
  
 typeof 
  
 entity 
 . 
 KEY_SYMBOL 
 ;
    Property Value
    Type Description
    typeof entity.KEY_SYMBOL

    KEY

      static 
  
 KEY 
 : 
  
 typeof 
  
 entity 
 . 
 KEY_SYMBOL 
 ;

    Access the Key from an Entity object.

    Datastore#KEY {symbol}

    Property Value
    Type Description
    typeof entity.KEY_SYMBOL

    MORE_RESULTS_AFTER_CURSOR

      MORE_RESULTS_AFTER_CURSOR 
 : 
  
 string 
 ;
    Property Value
    Type Description
    string

    MORE_RESULTS_AFTER_CURSOR

      static 
  
 MORE_RESULTS_AFTER_CURSOR 
 : 
  
 string 
 ;

    This is one of three values which may be returned from , , and as info.moreResults .

    There *may* be more results after the specified end cursor.

    {string}

    Property Value
    Type Description
    string

    MORE_RESULTS_AFTER_LIMIT

      MORE_RESULTS_AFTER_LIMIT 
 : 
  
 string 
 ;
    Property Value
    Type Description
    string

    MORE_RESULTS_AFTER_LIMIT

      static 
  
 MORE_RESULTS_AFTER_LIMIT 
 : 
  
 string 
 ;

    This is one of three values which may be returned from , , and as info.moreResults .

    There *may* be more results after the specified limit.

    {string}

    Property Value
    Type Description
    string

    namespace

      namespace 
 ?: 
  
 string 
 ;
    Property Value
    Type Description
    string

    NO_MORE_RESULTS

      NO_MORE_RESULTS 
 : 
  
 string 
 ;
    Property Value
    Type Description
    string

    NO_MORE_RESULTS

      static 
  
 NO_MORE_RESULTS 
 : 
  
 string 
 ;

    This is one of three values which may be returned from , , and as info.moreResults .

    There are no more results left to query for.

    {string}

    Property Value
    Type Description
    string

    options

      options 
 : 
  
 DatastoreOptions 
 ;
    Property Value
    Type Description
    DatastoreOptions

    port_

      port_ 
 ?: 
  
 number 
 ;
    Property Value
    Type Description
    number

    Query

      Query 
 : 
  
 typeof 
  
 Query 
 ;

    Query class.

    Datastore.Query Query {constructor}

    Property Value
    Type Description
    typeof Query

    Transaction

      Transaction 
 : 
  
 typeof 
  
 Transaction 
 ;

    Transaction class.

    Datastore.Transaction Transaction {constructor}

    Property Value
    Type Description
    typeof Transaction

    Methods

    createQuery(kind)

      createQuery 
 ( 
 kind 
 ?: 
  
 string 
 ) 
 : 
  
 Query 
 ;
    Parameter
    Type Name Description
    string
    		kind
    Returns
    Type Description
    Query

    createQuery(kind)

      createQuery 
 ( 
 kind 
 ?: 
  
 string 
 []) 
 : 
  
 Query 
 ;
    Parameter
    Type Name Description
    string[]
    		kind
    Returns
    Type Description
    Query

    createQuery(namespace, kind)

      createQuery 
 ( 
 namespace 
 : 
  
 string 
 , 
  
 kind 
 : 
  
 string 
 ) 
 : 
  
 Query 
 ;
    Parameters
    Type Name Description
    string
    		namespace
    string
    		kind
    Returns
    Type Description
    Query

    createQuery(namespace, kind)

      createQuery 
 ( 
 namespace 
 : 
  
 string 
 , 
  
 kind 
 : 
  
 string 
 []) 
 : 
  
 Query 
 ;
    Parameters
    Type Name Description
    string
    		namespace
    string[]
    		kind
    Returns
    Type Description
    Query

    determineBaseUrl_(customApiEndpoint)

      determineBaseUrl_ 
 ( 
 customApiEndpoint 
 ?: 
  
 string 
 ) 
 : 
  
 void 
 ;

    Determine the appropriate endpoint to use for API requests. If not explicitly defined, check for the "DATASTORE_EMULATOR_HOST" environment variable, used to connect to a local Datastore server.

    Parameter
    Type Name Description
    string
    		customApiEndpoint

    Custom API endpoint.
    Returns
    Type Description
    void

    double(value)

      double 
 ( 
 value 
 : 
  
 number 
 ) 
 : 
  
 entity 
 . 
 Double 
 ;
    Parameter
    Type Name Description
    number
    		value
    Returns
    Type Description
    entity.Double

    double(value)

      static 
  
 double 
 ( 
 value 
 : 
  
 number 
 ) 
 : 
  
 entity 
 . 
 Double 
 ;

    Helper function to get a Datastore Double object.

    Parameter
    Type Name Description
    number
    		value

    The double value.
    Returns
    Type Description
    entity.Double

    {object}

    export(config)

      export 
 ( 
 config 
 : 
  
 ExportEntitiesConfig 
 ) 
 : 
  
 Promise<LongRunningResponse> 
 ;
    Parameter
    Type Name Description
    ExportEntitiesConfig
    		config
    Returns
    Type Description
    Promise < LongRunningResponse >

    export(config, callback)

      export 
 ( 
 config 
 : 
  
 ExportEntitiesConfig 
 , 
  
 callback 
 : 
  
 LongRunningCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    ExportEntitiesConfig
    		config
    LongRunningCallback
    		callback
    Returns
    Type Description
    void

    geoPoint(coordinates)

      geoPoint 
 ( 
 coordinates 
 : 
  
 entity 
 . 
 Coordinates 
 ) 
 : 
  
 entity 
 . 
 GeoPoint 
 ;
    Parameter
    Type Name Description
    entity.Coordinates
    		coordinates
    Returns
    Type Description
    entity.GeoPoint

    geoPoint(coordinates)

      static 
  
 geoPoint 
 ( 
 coordinates 
 : 
  
 entity 
 . 
 Coordinates 
 ) 
 : 
  
 entity 
 . 
 GeoPoint 
 ;

    Helper function to get a Datastore Geo Point object.

    Parameter
    Type Name Description
    entity.Coordinates
    		coordinates

    Coordinate value.
    Returns
    Type Description
    entity.GeoPoint

    {object}

    getIndexes(options)

      getIndexes 
 ( 
 options 
 ?: 
  
 GetIndexesOptions 
 ) 
 : 
  
 Promise<GetIndexesResponse> 
 ;
    Parameter
    Type Name Description
    GetIndexesOptions
    		options
    Returns
    Type Description
    Promise < GetIndexesResponse >

    getIndexes(options, callback)

      getIndexes 
 ( 
 options 
 : 
  
 GetIndexesOptions 
 , 
  
 callback 
 : 
  
 GetIndexesCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    GetIndexesOptions
    		options
    GetIndexesCallback
    		callback
    Returns
    Type Description
    void

    getIndexes(callback)

      getIndexes 
 ( 
 callback 
 : 
  
 GetIndexesCallback 
 ) 
 : 
  
 void 
 ;
    Parameter
    Type Name Description
    GetIndexesCallback
    		callback
    Returns
    Type Description
    void

    getIndexesStream(options)

      getIndexesStream 
 ( 
 options 
 ?: 
  
 GetIndexesOptions 
 ) 
 : 
  
 NodeJS 
 . 
 ReadableStream 
 ;

    Get all of the indexes in this project as a readable object stream.

    Parameter
    Type Name Description
    GetIndexesOptions
    		options

    Configuration object. See for a complete list of options.
    Returns
    Type Description
    NodeJS.ReadableStream

    {ReadableStream

    getProjectId()

      getProjectId 
 () 
 : 
  
 Promise<string> 
 ;
    Returns
    Type Description
    Promise <string>

    import(config)

      import 
 ( 
 config 
 : 
  
 ImportEntitiesConfig 
 ) 
 : 
  
 Promise<LongRunningResponse> 
 ;
    Parameter
    Type Name Description
    ImportEntitiesConfig
    		config
    Returns
    Type Description
    Promise < LongRunningResponse >

    import(config, callback)

      import 
 ( 
 config 
 : 
  
 ImportEntitiesConfig 
 , 
  
 callback 
 : 
  
 LongRunningCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    ImportEntitiesConfig
    		config
    LongRunningCallback
    		callback
    Returns
    Type Description
    void

    index(id)

      index 
 ( 
 id 
 : 
  
 string 
 ) 
 : 
  
 Index 
 ;

    Get a reference to an Index.

    Parameter
    Type Name Description
    string
    		id

    The index name or id.
    Returns
    Type Description
    Index

    {Index}

    insert(entities)

      insert 
 ( 
 entities 
 : 
  
 Entities 
 ) 
 : 
  
 Promise<InsertResponse> 
 ;
    Parameter
    Type Name Description
    Entities
    		entities
    Returns
    Type Description
    Promise < InsertResponse >

    insert(entities, callback)

      insert 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 callback 
 : 
  
 InsertCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    InsertCallback
    		callback
    Returns
    Type Description
    void

    int(value)

      int 
 ( 
 value 
 : 
  
 number 
  
 | 
  
 string 
 ) 
 : 
  
 entity 
 . 
 Int 
 ;
    Parameter
    Type Name Description
    number | string
    		value
    Returns
    Type Description
    entity.Int

    int(value)

      static 
  
 int 
 ( 
 value 
 : 
  
 number 
  
 | 
  
 string 
 ) 
 : 
  
 entity 
 . 
 Int 
 ;

    Helper function to get a Datastore Integer object.

    This is also useful when using an ID outside the bounds of a JavaScript Number object.

    Parameter
    Type Name Description
    number | string
    		value

    The integer value.
    Returns
    Type Description
    entity.Int

    {object}

    isDouble(value)

      isDouble 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;
    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    isDouble(value)

      static 
  
 isDouble 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;

    Helper function to check if something is a Datastore Double object.

    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    {boolean}

    isGeoPoint(value)

      isGeoPoint 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;
    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    isGeoPoint(value)

      static 
  
 isGeoPoint 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;

    Helper function to check if something is a Datastore Geo Point object.

    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    {boolean}

    isInt(value)

      isInt 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;
    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    isInt(value)

      static 
  
 isInt 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;

    Helper function to check if something is a Datastore Integer object.

    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    {boolean}

    isKey(value)

      isKey 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;
    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    isKey(value)

      static 
  
 isKey 
 ( 
 value 
 ?: 
  
 {}) 
 : 
  
 boolean 
 ;

    Helper function to check if something is a Datastore Key object.

    Parameter
    Type Name Description
    {}
    		value
    Returns
    Type Description
    boolean

    {boolean}

    key(options)

      key 
 ( 
 options 
 : 
  
 entity 
 . 
 KeyOptions 
 ) 
 : 
  
 entity 
 . 
 Key 
 ;
    Parameter
    Type Name Description
    entity.KeyOptions
    		options
    Returns
    Type Description
    entity.Key

    key(path)

      key 
 ( 
 path 
 : 
  
 PathType 
 []) 
 : 
  
 entity 
 . 
 Key 
 ;
    Parameter
    Type Name Description
    PathType []
    		 path
    Returns
    Type Description
    entity.Key

    key(path)

      key 
 ( 
 path 
 : 
  
 string 
 ) 
 : 
  
 entity 
 . 
 Key 
 ;
    Parameter
    Type Name Description
    string
    		path
    Returns
    Type Description
    entity.Key

    keyFromLegacyUrlsafe(key)

      keyFromLegacyUrlsafe 
 ( 
 key 
 : 
  
 string 
 ) 
 : 
  
 entity 
 . 
 Key 
 ;

    Helper to convert URL safe key string to entity key object

    This is intended to work with the "legacy" representation of a datastore "Key" used within Google App Engine (a so-called "Reference").

    Parameter
    Type Name Description
    string
    		key

    Entity key object.
    Returns
    Type Description
    entity.Key

    {string} Created urlsafe key.

    keyToLegacyUrlSafe(key, locationPrefix)

      keyToLegacyUrlSafe 
 ( 
 key 
 : 
  
 entity 
 . 
 Key 
 , 
  
 locationPrefix 
 ?: 
  
 string 
 ) 
 : 
  
 Promise<string> 
 ;
    Parameters
    Type Name Description
    entity.Key
    		key
    string
    		locationPrefix
    Returns
    Type Description
    Promise <string>

    keyToLegacyUrlSafe(key, callback)

      keyToLegacyUrlSafe 
 ( 
 key 
 : 
  
 entity 
 . 
 Key 
 , 
  
 callback 
 : 
  
 KeyToLegacyUrlSafeCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    entity.Key
    		key
    KeyToLegacyUrlSafeCallback
    		callback
    Returns
    Type Description
    void

    keyToLegacyUrlSafe(key, locationPrefix, callback)

      keyToLegacyUrlSafe 
 ( 
 key 
 : 
  
 entity 
 . 
 Key 
 , 
  
 locationPrefix 
 : 
  
 string 
 , 
  
 callback 
 : 
  
 KeyToLegacyUrlSafeCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    entity.Key
    		key
    string
    		locationPrefix
    KeyToLegacyUrlSafeCallback
    		callback
    Returns
    Type Description
    void

    save(entities, gaxOptions)

      save 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 gaxOptions 
 ?: 
  
 CallOptions 
 ) 
 : 
  
 Promise<SaveResponse> 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    CallOptions
    		gaxOptions
    Returns
    Type Description
    Promise < SaveResponse >

    save(entities, gaxOptions, callback)

      save 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 gaxOptions 
 : 
  
 CallOptions 
 , 
  
 callback 
 : 
  
 SaveCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    CallOptions
    		gaxOptions
    SaveCallback
    		callback
    Returns
    Type Description
    void

    save(entities, callback)

      save 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 callback 
 : 
  
 SaveCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    SaveCallback
    		callback
    Returns
    Type Description
    void

    transaction(options)

      transaction 
 ( 
 options 
 ?: 
  
 TransactionOptions 
 ) 
 : 
  
 Transaction 
 ;

    Create a new Transaction object.

    Parameter
    Type Name Description
    TransactionOptions
    		options

    Configuration object.
    Returns
    Type Description
    Transaction

    {Transaction}

    update(entities)

      update 
 ( 
 entities 
 : 
  
 Entities 
 ) 
 : 
  
 Promise<UpdateResponse> 
 ;
    Parameter
    Type Name Description
    Entities
    		entities
    Returns
    Type Description
    Promise < UpdateResponse >

    update(entities, callback)

      update 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 callback 
 : 
  
 UpdateCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    UpdateCallback
    		callback
    Returns
    Type Description
    void

    upsert(entities)

      upsert 
 ( 
 entities 
 : 
  
 Entities 
 ) 
 : 
  
 Promise<UpsertResponse> 
 ;
    Parameter
    Type Name Description
    Entities
    		entities
    Returns
    Type Description
    Promise < UpsertResponse >

    upsert(entities, callback)

      upsert 
 ( 
 entities 
 : 
  
 Entities 
 , 
  
 callback 
 : 
  
 UpsertCallback 
 ) 
 : 
  
 void 
 ;
    Parameters
    Type Name Description
    Entities
    		entities
    UpsertCallback
    		callback
    Returns
    Type Description
    void
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