2018-02-02 05:25:36 -05:00
|
|
|
[[java-rest-high-indices-exists]]
|
|
|
|
|
=== Indices Exists API
|
|
|
|
|
|
|
|
|
|
[[java-rest-high-indices-exists-request]]
|
|
|
|
|
==== Indices Exists Request
|
|
|
|
|
|
|
|
|
|
The high-level REST client uses a `GetIndexRequest` for Indices Exists API. The index name (or indices' names) are required.
|
|
|
|
|
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-request]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
<1> Index
|
|
|
|
|
|
|
|
|
|
[[java-rest-high-indices-exists-optional-args]]
|
|
|
|
|
==== Optional arguments
|
|
|
|
|
Indices Exists API also accepts following optional arguments, through a `GetIndexRequest`:
|
|
|
|
|
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-request-optionals]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
<1> Whether to return local information or retrieve the state from master node
|
|
|
|
|
<2> Return result in a format suitable for humans
|
|
|
|
|
<3> Whether to return all default setting for each of the indices
|
|
|
|
|
<4> Return settings in flat format
|
|
|
|
|
<5> Controls how unavailable indices are resolved and how wildcard expressions are expanded
|
|
|
|
|
|
|
|
|
|
[[java-rest-high-indices-sync]]
|
|
|
|
|
==== Synchronous Execution
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-response]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
|
|
|
|
|
[[java-rest-high-indices-async]]
|
|
|
|
|
==== Asynchronous Execution
|
2018-02-02 05:46:05 -05:00
|
|
|
The asynchronous execution of an indices exists request requires both the
|
|
|
|
|
`GetIndexRequest` instance and an `ActionListener` instance to be passed
|
|
|
|
|
to the asynchronous method:
|
2018-02-02 05:25:36 -05:00
|
|
|
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-async]
|
|
|
|
|
--------------------------------------------------
|
2018-02-02 05:46:05 -05:00
|
|
|
<1> The `GetIndexRequest` to execute and the `ActionListener` to use when
|
|
|
|
|
the execution completes
|
|
|
|
|
|
|
|
|
|
The asynchronous method does not block and returns immediately. Once it is
|
|
|
|
|
completed the `ActionListener` is called back using the `onResponse` method
|
|
|
|
|
if the execution successfully completed or using the `onFailure` method if
|
|
|
|
|
it failed.
|
|
|
|
|
|
|
|
|
|
A typical listener for the Indices Exists looks like:
|
|
|
|
|
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-execute-listener]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
<1> Called when the execution is successfully completed. The response is
|
|
|
|
|
provided as an argument
|
2018-02-02 05:25:36 -05:00
|
|
|
<2> Called in case of failure. The raised exception is provided as an argument
|
|
|
|
|
|
|
|
|
|
[[java-rest-high-indices-exists-response]]
|
|
|
|
|
==== Response
|
|
|
|
|
The response is a `boolean` value, indicating whether the index (or indices) exist:
|
|
|
|
|
|
|
|
|
|
["source","java",subs="attributes,callouts,macros"]
|
|
|
|
|
--------------------------------------------------
|
|
|
|
|
include-tagged::{doc-tests}/IndicesClientDocumentationIT.java[indices-exists-response]
|
|
|
|
|
--------------------------------------------------
|
