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WARNING: Version 5.x has passed its EOL date.

This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.

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Elastic Docs ›Elasticsearch.Net and NEST: the .NET clients [5.x] ›NEST - High level client ›Conventions

Type name inference

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Type name inference

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Type names are resolved in NEST by default, by lowercasing the CLR type name

var settings = new ConnectionSettings();
var resolver = new TypeNameResolver(settings);
var type = resolver.Resolve<Project>();
type.Should().Be("project");

Applying a type name with ElasticsearchTypeAttribute

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A type name can be applied for a CLR type, using the Name property on ElasticsearchTypeAttribute

[ElasticsearchType(Name = "attributed_project")]
public class AttributedProject { }

var settings = new ConnectionSettings();
var resolver = new TypeNameResolver(settings);
var type = resolver.Resolve<AttributedProject>();
type.Should().Be("attributed_project");

Applying a type name with DataContractAttribute

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Similarly to ElasticsearchTypeAttribute, a type name can be applied for a CLR type, using the Name property on System.Runtime.Serialization.DataContractAttribute

[DataContract(Name = "data_contract_project")]
public class DataContractProject { }

var settings = new ConnectionSettings();
var resolver = new TypeNameResolver(settings);
var type = resolver.Resolve<DataContractProject>();
type.Should().Be("data_contract_project");

Override type name inferrer

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You can provide a delegate to override the default type name inferrer for types

var settings = new ConnectionSettings()
    .DefaultTypeNameInferrer(t=>t.Name.ToLower() + "-suffix");
var resolver = new TypeNameResolver(settings);
var type = resolver.Resolve<Project>();
type.Should().Be("project-suffix");
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