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Build a service by using various CRUD methods.

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For detailed documentation that includes this code sample, see the following:

Getting started with the Firestore in Datastore mode API

Code sample

C#

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode C# API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  // Create an authorized Datastore service using Application Default Credentials. 
 _db 
  
 = 
  
 DatastoreDb 
 . 
 Create 
 ( 
 projectId 
 ); 
 // Create a Key factory to construct keys associated with this project. 
 _keyFactory 
  
 = 
  
 _db 
 . 
 CreateKeyFactory 
 ( 
 "Task" 
 );

Go

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode Go API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  import 
  
 ( 
  
 "context" 
  
 "log" 
  
 "cloud.google.com/go/datastore" 
 ) 
 func 
  
 createClient 
 ( 
 projectID 
  
 string 
 ) 
  
 ( 
 * 
 datastore 
 . 
  Client 
 
 , 
  
 error 
 ) 
  
 { 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 datastore 
 . 
  NewClient 
 
 ( 
 ctx 
 , 
  
 projectID 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 log 
 . 
 Fatalf 
 ( 
 "Could not create datastore client: %v" 
 , 
  
 err 
 ) 
  
 } 
  
 // Note: call the following from main() to ensure the client 
  
 // properly frees all resources. 
  
 // defer client.Close() 
  
 return 
  
 client 
 , 
  
 nil 
 }

Java

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode Java API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  // Create an authorized Datastore service using Application Default Credentials. 
 private 
  
 final 
  
 Datastore 
  
 datastore 
  
 = 
  
 DatastoreOptions 
 . 
 getDefaultInstance 
 (). 
 getService 
 (); 
 // Create a Key factory to construct keys associated with this project. 
 private 
  
 final 
  
 KeyFactory 
  
 keyFactory 
  
 = 
  
 datastore 
 . 
 newKeyFactory 
 (). 
 setKind 
 ( 
 "Task" 
 );

Node.js

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode Node.js API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  // By default, the client will authenticate using the service account file 
 // specified by the GOOGLE_APPLICATION_CREDENTIALS environment variable and use 
 // the project specified by the GCLOUD_PROJECT environment variable. See 
 // https://googlecloudplatform.github.io/google-cloud-node/#/docs/datastore/latest/guides/authentication 
 const 
  
 { 
 Datastore 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/datastore 
' 
 ); 
 // Creates a client 
 const 
  
 datastore 
  
 = 
  
 new 
  
  Datastore 
 
 ();

PHP

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode PHP API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  use Google\Cloud\Datastore\DatastoreClient; 
 /** 
 * Create a Cloud Datastore client. 
 * 
 * @param string $projectId The Google Cloud project ID. 
 */ 
 function build_service(string $projectId) 
 { 
 $datastore = new DatastoreClient(['projectId' => $projectId]); 
 return $datastore; 
 }

Python

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode Python API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  from 
  
 google.cloud 
  
 import 
  datastore 
 
 def 
  
 create_client 
 ( 
 project_id 
 ): 
 return 
  datastore 
 
 . 
  Client 
 
 ( 
 project_id 
 )

Ruby

To learn how to install and use the client library for Datastore mode, see Datastore mode client libraries . For more information, see the Datastore mode Ruby API reference documentation .

To authenticate to Datastore mode, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .

  require 
  
 "google/cloud/datastore" 
 datastore 
  
 = 
  
 Google 
 :: 
 Cloud 
 :: 
  Datastore 
 
 . 
  new

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Code sample

C#

Go

Java

Node.js

PHP

Python

Ruby

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