OpenSearch/docs/java-rest/high-level/document/exists.asciidoc

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--
:api: exists
:request: GetRequest
:response: boolean
--
[id="{upid}-{api}"]
=== Exists API
The exists API returns `true` if a document exists, and `false` otherwise.
[id="{upid}-{api}-request"]
==== Exists Request
It uses +{request}+ just like the <<java-rest-high-document-get>>.
All of its <<java-rest-high-document-get-request-optional-arguments, optional arguments>>
are supported. Since `exists()` only returns `true` or `false`, we recommend
turning off fetching `_source` and any stored fields so the request is
slightly lighter:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests-file}[{api}-request]
--------------------------------------------------
<1> Index
<2> Document id
<3> Disable fetching `_source`.
<4> Disable fetching stored fields.
include::../execution.asciidoc[]
==== Source exists request
A variant of the exists request is `existsSource` method which has the additional check
that the document in question has stored the `source`. If the mapping for the index has opted
to remove support for storing JSON source in documents then this method will return false
for documents in this index.