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Get a document

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Get a document

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Gets a single document from Elasticsearch

By Id

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var response = client.Get<ElasticSearchProject>(1);

Index and type are inferred but overloads still exists for full control:

var response = client.Get<ElasticSearchProject>("myindex", "mytype", 1);

Handling the Get response

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The Get<T>() call returns an IGetResponse<T> that holds the requested document as well as other meta data returned from Elasticsearch.

response.Source holds the ElasticSearchProject with id 1.

You can also use Get<T>() to query just some fields of a single document:

Fluent DSL

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var response = client.Get<ElasticsearchProject>(g => g
    .Index("myindex")
    .Type("mytype")
    .Id(1)
    .Fields(p=>p.Content, p=>p.Name, p=>p.Id, p=>p.DoubleValue)
);

Object Initializer Syntax

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var request = new GetRequest("myindex", "mytype", "1")
{
    Fields = new PropertyPathMarker[] { "content", "name", "id" }
};

var response = client.Get<ElasticsearchProject>(request);

You can then access the fields like so:

var name = response.Fields.FieldValue<string>(p => p.Name);
var id = response.Fields.FieldValue<int>(p => p.Id);
var doubleValue = response.Fields.FieldValue<double>(p => p.DoubleValue);

Remember p => p.Name can also be written as "name" and NEST does not force you to write expressions everywhere (although it is much encouraged!).

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