Get a database object

When using a client, most Data API interactions require you to connect to a database through a DataAPIClient object.

Connecting to a database is an essential component of most Data API client scripts. For more information, see Get started with the Data API.

For more information about the Data API client hierarchy, see Python client usage, TypeScript client usage, and Java client usage.

Result

  • Python

  • TypeScript

  • Java

Returns a Database object that you can use to perform CRUD operations on your database

Returns a Db object that you can use to perform CRUD operations on your database

Returns a Database object that you can use to perform CRUD operations on your database

Parameters

  • Python

  • TypeScript

  • Java

Use the get_database method, which belongs to the astrapy.DataAPIClient class.

Method signature
get_database(
    api_endpoint: str,
    *,
    token: str | TokenProvider,
    keyspace: str,
    spawn_api_options: APIOptions,
) -> Database
Name Type Summary

api_endpoint

str

A database API endpoint URL, such as https://DATABASE_ID-REGION.apps.astra.datastax.com.

token

str | TokenProvider

Optional. An application token for a database, in the form of an "AstraCS:…​" string, or an instance of TokenProvider.

The token should have sufficient permissions to perform the desired operations.

If you specified a token when instantiating the DataAPIClient, that token will be overridden.

keyspace

str

Optional. Specify the working keyspace. You can override this in downstream methods such as use_keyspace, get_collection, create_collection, get_table, create_table.

Default: "default_keyspace".

spawn_api_options

APIOptions

Optional. A complete or partial specification of the APIOptions.

This overrides the defaults inherited from the Data API client. This allows you to customize the interaction with the Data API. For example, you can use this parameter to change the timeout settings.

Use the db method, which belongs to the DataAPIClient class.

Method signature
db(
  endpoint: string,
  options?: {
    logging?: LoggingConfig,
    keyspace?: string | null,
    token?: string | TokenProvider | null,
    dataApiPath?: string,
    serdes?: DbSerDesConfig,
    timeoutDefaults?: TimeoutDescriptor,
  }
): Db
Name Type Summary

endpoint

string

A database API endpoint URL, such as https://DATABASE_ID-REGION.apps.astra.datastax.com.

options

RootDbOptions

Optional. The options to use for the database. See the options table for more details.

Properties of options
Name Type Summary

keyspace

string

Optional. Specify the working keyspace. You can override this in downstream methods such as useKeyspace, collection, createCollection, table, and getTable.

Default: "default_keyspace".

monitorCommands

boolean

Optional. Whether to monitor commands through CommandEvents, using the client as an event emitter.

Default: false.

token

string

Optional. An application token for a database. Tokens are prefixed with AstraCS:.

The token should have sufficient permissions to perform the desired operations.

If you specified a token when instantiating the DataAPIClient, that token will be overridden.

dataApiPath

string

Optional. The path to the Data API.

Default: 'api/json/v1'.

Use the getDatabase method, which belongs to the com.datastax.astra.client.DataAPIClient class.

Method signature
public Database getDatabase(String apiEndpoint, DatabaseOptions dbOptions)
public Database getDatabase(String apiEndpoint, String keyspace)
public Database getDatabase(String apiEndpoint)
public Database getDatabase(UUID databaseId)
public Database getDatabase(UUID databaseId, DatabaseOptions dbOptions)
public Database getDatabase(UUID databaseId, String region, DatabaseOptions dbOptions)
Name Type Summary

apiEndpoint

String

A database API endpoint URL, such as https://DATABASE_ID-REGION.apps.astra.datastax.com.

databaseId

UUID

A database ID. You can optionally specify a region for multi-region databases.

DataStax recommends using apiEndpoint instead.

keyspace

String

Specify the working keyspace. You can override this in downstream methods such as useKeyspace, getCollection, createCollection, getTable, createTable.

Default: "default_keyspace".

region

String

The region to use for connecting to the database.

The database must be deployed in that region.

If you don’t set this parameter and the region can’t be inferred from an API endpoint, an additional DevOps API request is made to determine the default region and use it in subsequent operations.

dbOptions

DatabaseOptions

The options to use for the database.

Examples

The following examples demonstrate how to connect to a database.

  • Python

  • TypeScript

  • Java

from astrapy import DataAPIClient

client = DataAPIClient()
database = client.get_database("ASTRA_DB_API_ENDPOINT", token="ASTRA_DB_APPLICATION_TOKEN")
import { DataAPIClient } from '@datastax/astra-db-ts';

const client = new DataAPIClient();
const database = client.db('ASTRA_DB_API_ENDPOINT', {
  token: 'ASTRA_DB_APPLICATION_TOKEN',
});
package com.examples;

import com.datastax.astra.client.DataAPIClient;
import com.datastax.astra.client.core.options.DataAPIClientOptions;
import com.datastax.astra.client.databases.Database;
import com.datastax.astra.client.databases.DatabaseOptions;

public class DeleteOne {

    public static void main(String[] args) {
      DataAPIClient client = new DataAPIClient(new DataAPIClientOptions());

      Database database =
          client.getDatabase(
              "ASTRA_DB_API_ENDPOINT", new DatabaseOptions("ASTRA_DB_APPLICATION_TOKEN", new DataAPIClientOptions()));
    }
}

Client reference

  • Python

  • TypeScript

  • Java

For more information, see the client reference.

For more information, see the client reference.

For more information, see the client reference.

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