Preface

Deprecated in 7.0.0.

The TransportClient is deprecated in favour of the Java High Level REST Client and will be removed in Elasticsearch 8.0. The migration guide describes all the steps needed to migrate.

This section describes the Java API that Elasticsearch provides. All Elasticsearch operations are executed using a Client object. All operations are completely asynchronous in nature (either accepts a listener, or returns a future).

Additionally, operations on a client may be accumulated and executed in Bulk.

Note, all the APIs are exposed through the Java API (actually, the Java API is used internally to execute them).