IndexKeysDefinitionExtensions.GeoHaystack<TDocument> Method (IndexKeysDefinition<TDocument>, Expression<Func<TDocument, Object>>, Expression<Func<TDocument, Object>>) |
Note: This API is now obsolete.
Combines an existing index keys definition with a geo haystack index key definition.
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2
Syntax [ObsoleteAttribute("GeoHaystack indexes were deprecated in server version 4.4.")]
public static IndexKeysDefinition<TDocument> GeoHaystack<TDocument>(
this IndexKeysDefinition<TDocument> keys,
Expression<Func<TDocument, Object>> field,
Expression<Func<TDocument, Object>> additionalFieldName = null
)
<ExtensionAttribute>
<ObsoleteAttribute("GeoHaystack indexes were deprecated in server version 4.4.")>
Public Shared Function GeoHaystack(Of TDocument) (
keys As IndexKeysDefinition(Of TDocument),
field As Expression(Of Func(Of TDocument, Object)),
Optional additionalFieldName As Expression(Of Func(Of TDocument, Object)) = Nothing
) As IndexKeysDefinition(Of TDocument)
[<ExtensionAttribute>]
[<ObsoleteAttribute("GeoHaystack indexes were deprecated in server version 4.4.")>]
static member GeoHaystack :
keys : IndexKeysDefinition<'TDocument> *
field : Expression<Func<'TDocument, Object>> *
?additionalFieldName : Expression<Func<'TDocument, Object>>
(* Defaults:
let _additionalFieldName = defaultArg additionalFieldName null
*)
-> IndexKeysDefinition<'TDocument>
Parameters
- keys
- Type: MongoDB.Driver.IndexKeysDefinition<TDocument>
The keys. - field
- Type: System.Linq.Expressions.Expression<Func<TDocument, Object>>
The field. - additionalFieldName (Optional)
- Type: System.Linq.Expressions.Expression<Func<TDocument, Object>>
Name of the additional field.
Type Parameters
- TDocument
- The type of the document.
Return Value
Type:
IndexKeysDefinition<TDocument>
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
IndexKeysDefinition<TDocument>. 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).
See Also