Package com.datastax.astra.client.admin

Class DataAPIDatabaseAdmin

java.lang.Object
com.datastax.astra.internal.command.AbstractCommandRunner<AdminOptions>
com.datastax.astra.client.admin.DataAPIDatabaseAdmin
All Implemented Interfaces:
DatabaseAdmin, CommandRunner
public class DataAPIDatabaseAdmin extends AbstractCommandRunner<AdminOptions> implements DatabaseAdmin
Implementation of Client.

  • Field Details

    • SERIALIZER

      protected static final DataAPISerializer SERIALIZER
      Serializer.

    • db

      protected Database db
      Database if initialized from the DB.

  • Constructor Details

    • DataAPIDatabaseAdmin

      public DataAPIDatabaseAdmin(Database db, AdminOptions options)
      Initialize a database admin from token and database id.
      Parameters:
      db - current database used to initialized the admin
      options - list of options for the admin

  • Method Details

    • listKeyspaceNames

      public Set<String> listKeyspaceNames()
      Retrieves a stream of keyspaces names available in the current database. This method is essential for applications that need to enumerate all namespaces to perform operations such as displaying available namespaces to users, managing keyspaces programmatically, or executing specific tasks within each keyspace. The returned Stream facilitates efficient processing of keyspace names, enabling operations like filtering, sorting, and mapping without the need for preloading all names into memory.

      Example usage:

       
 // Assuming 'client' is an instance of DataApiClient
 Stream<String> keyspacesNames = client.listKeyspacesNames());
 // Display names in the console
 keyspacesNames.forEach(System.out::println);
      Specified by:
      listKeyspaceNames in interface DatabaseAdmin
      Returns:
      A Set containing the names of all namespaces within the current database. The stream provides a flexible and efficient means to process the namespace names according to the application's needs.

    • findEmbeddingProviders

      public FindEmbeddingProvidersResult findEmbeddingProviders()
      Retrieve the list of embedding providers available in the current database. Embedding providers are services that provide embeddings for text, images, or other data types. This method returns a map of provider names to EmbeddingProvider instances, allowing applications to access and utilize the embedding services.

      Example usage:

       
 // Assuming 'client' is an instance of DataApiClient
 Map<String, EmbeddingProvider> providers = client.findEmbeddingProvidersAsMap());
      Specified by:
      findEmbeddingProviders in interface DatabaseAdmin
      Returns:
      list of available providers

    • getDatabase

      public Database getDatabase()
      Access the Database associated with this admin class.
      Specified by:
      getDatabase in interface DatabaseAdmin
      Returns:
      associated database

    • getDatabase

      public Database getDatabase(String keyspace)
      Retrieves a Database instance that represents a specific database (or namespace) based on the provided namespace name.

      Example usage:

       
 // Assume 'client' is an instance of your data API client
 String keyspace = "exampleNamespace";

 // Retrieve the namespace instance
 DataApiNamespace namespace = client.getNamespace(keyspace);

 // Now, 'namespace' can be used to perform operations within 'exampleNamespace'
      This example illustrates how to obtain a DataApiNamespace instance for a specified namespace name, which then enables the execution of various database operations within that namespace. It highlights the method's role in facilitating direct interaction with different parts of the database.
      Specified by:
      getDatabase in interface DatabaseAdmin
      Parameters:
      keyspace - The name of the keyspace to retrieve. This parameter should match the exact name of the namespace as it exists in the database.
      Returns:
      A DataApiNamespace instance that encapsulates the operations and information specific to the given keyspace.

    • getDatabase

      public Database getDatabase(String keyspace, String userToken)
      Access the Database associated with this admin class.
      Specified by:
      getDatabase in interface DatabaseAdmin
      Parameters:
      keyspace - the destination keyspace for this database
      userToken - the user token with DML access if different from admin.
      Returns:
      instance of the database

    • createKeyspace

      public void createKeyspace(String keyspace, boolean updateDBKeyspace)
      Create a Keyspace providing a name.
      Specified by:
      createKeyspace in interface DatabaseAdmin
      Parameters:
      keyspace - current keyspace.
      updateDBKeyspace - if the keyspace should be updated in the database.

    • createKeyspace

      public void createKeyspace(String keyspace, KeyspaceOptions options)
      Allow to create a keyspace with full-fledged definition
      Parameters:
      keyspace - keyspace name
      options - options to create a namespace

    • dropKeyspace

      public void dropKeyspace(String keyspace, BaseOptions<?> options)
      Description copied from interface: DatabaseAdmin
      Drops (deletes) the specified keyspace from the database. This operation is idempotent; it will not produce an error if the keyspace does not exist. This method is useful for cleaning up data or removing entire keyspaces as part of database maintenance or restructuring. Caution should be exercised when using this method, as dropping a keyspace will remove all the data, collections, or tables contained within it, and this action cannot be undone.

      Example usage:

       
 // Assume 'client' is an instance of your data API client
 String keyspace = "targetKeyspace";

 // Drop the keyspace
 client.dropKeyspace(keyspace);

 // The keyspace 'targetKeyspace' is now deleted, along with all its contained data
      This example demonstrates how to safely drop a keyspace by name. The operation ensures that even if the keyspace does not exist, the method call will not interrupt the flow of the application, thereby allowing for flexible and error-tolerant code design.
      Specified by:
      dropKeyspace in interface DatabaseAdmin
      Parameters:
      keyspace - The name of the keyspace to be dropped. This parameter specifies the target keyspace that should be deleted. The operation will proceed silently and without error even if the keyspace does not exist, ensuring consistent behavior.
      options - The options to use for the operation.