IndexKeysDefinitionExtensionsGeoHaystackTDocument Method (IndexKeysDefinitionTDocument, FieldDefinitionTDocument, FieldDefinitionTDocument)

Combines an existing index keys definition with a geo haystack index key definition.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.9.0+32b058abcdf2c7e8d9dd3a676d207b31897eee2e

Syntax

Copy

public static IndexKeysDefinition<TDocument> GeoHaystack<TDocument>(
	this IndexKeysDefinition<TDocument> keys,
	FieldDefinition<TDocument> field,
	FieldDefinition<TDocument> additionalFieldName = null
)

<ExtensionAttribute>
Public Shared Function GeoHaystack(Of TDocument) ( 
	keys As IndexKeysDefinition(Of TDocument),
	field As FieldDefinition(Of TDocument),
	Optional additionalFieldName As FieldDefinition(Of TDocument) = Nothing
) As IndexKeysDefinition(Of TDocument)

[<ExtensionAttribute>]
static member GeoHaystack : 
        keys : IndexKeysDefinition<'TDocument> * 
        field : FieldDefinition<'TDocument> * 
        ?additionalFieldName : FieldDefinition<'TDocument> 
(* Defaults:
        let _additionalFieldName = defaultArg additionalFieldName null
*)
-> IndexKeysDefinition<'TDocument>

Parameters

keys: Type: MongoDB.DriverIndexKeysDefinitionTDocument
The keys.
field: Type: MongoDB.DriverFieldDefinitionTDocument
The field.
additionalFieldName (Optional): Type: MongoDB.DriverFieldDefinitionTDocument
Name of the additional field.

Type Parameters

TDocument: The type of the document.

Return Value

Type: IndexKeysDefinitionTDocument
A combined index keys definition.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IndexKeysDefinitionTDocument. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

IndexKeysDefinitionExtensions Class

GeoHaystack Overload

MongoDB.Driver Namespace