IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Get API

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Get API

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Get Request

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A GetRequest requires the following arguments:

GetRequest getRequest = new GetRequest(
        "posts", 
        "doc",  
        "1");

	Index
	Type
	Document id

Optional arguments

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The following arguments can optionally be provided:

request.fetchSourceContext(new FetchSourceContext(false));

Disable source retrieval, enabled by default

String[] includes = new String[]{"message", "*Date"};
String[] excludes = Strings.EMPTY_ARRAY;
FetchSourceContext fetchSourceContext = new FetchSourceContext(true, includes, excludes);
request.fetchSourceContext(fetchSourceContext);

Configure source inclusion for specific fields

String[] includes = Strings.EMPTY_ARRAY;
String[] excludes = new String[]{"message"};
FetchSourceContext fetchSourceContext = new FetchSourceContext(true, includes, excludes);
request.fetchSourceContext(fetchSourceContext);

Configure source exclusion for specific fields

request.storedFields("message"); 
GetResponse getResponse = client.get(request);
String message = getResponse.getField("message").getValue();

	Configure retrieval for specific stored fields (requires fields to be stored separately in the mappings)
	Retrieve the `message` stored field (requires the field to be stored separately in the mappings)

request.routing("routing");

Routing value

request.parent("parent");

Parent value

request.preference("preference");

Preference value

request.realtime(false);

Set realtime flag to false (true by default)

request.refresh(true);

Perform a refresh before retrieving the document (false by default)

request.version(2);

Version

request.versionType(VersionType.EXTERNAL);

Version type

Synchronous Execution

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GetResponse getResponse = client.get(getRequest);

Asynchronous Execution

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client.getAsync(request, new ActionListener<GetResponse>() {
    @Override
    public void onResponse(GetResponse getResponse) {
        
    }

    @Override
    public void onFailure(Exception e) {
        
    }
});

	Called when the execution is successfully completed. The response is provided as an argument.
	Called in case of failure. The raised exception is provided as an argument.

Get Response

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The returned GetResponse allows to retrieve the requested document along with its metadata and eventually stored fields.

String index = getResponse.getIndex();
String type = getResponse.getType();
String id = getResponse.getId();
if (getResponse.isExists()) {
    long version = getResponse.getVersion();
    String sourceAsString = getResponse.getSourceAsString();        
    Map<String, Object> sourceAsMap = getResponse.getSourceAsMap(); 
    byte[] sourceAsBytes = getResponse.getSourceAsBytes();          
} else {
    
}

	Retrieve the document as a `String`
	Retrieve the document as a `Map<String, Object>`
	Retrieve the document as a `byte[]`
	Handle the scenario where the document was not found. Note that although the returned response has `404` status code, a valid `GetResponse` is returned rather than an exception thrown. Such response does not hold any source document and its `isExists` method returns `false`.

When a get request is performed against an index that does not exist, the response has 404 status code, an ElasticsearchException gets thrown which needs to be handled as follows:

GetRequest request = new GetRequest("does_not_exist", "doc", "1");
try {
    GetResponse getResponse = client.get(request);
} catch (ElasticsearchException e) {
    if (e.status() == RestStatus.NOT_FOUND) {
        
    }
}

Handle the exception thrown because the index does not exist

In case a specific document version has been requested, and the existing document has a different version number, a version conflict is raised:

try {
    GetRequest request = new GetRequest("posts", "doc", "1").version(2);
    GetResponse getResponse = client.get(request);
} catch (ElasticsearchException exception) {
    if (exception.status() == RestStatus.CONFLICT) {
        
    }
}

The raised exception indicates that a version conflict error was returned

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