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IndexKeysTDocumentGeoSpatialHaystackTMember, TAdditionalMember Method (ExpressionFuncTDocument, TMember, ExpressionFuncTDocument, TAdditionalMember)

Note: This API is now obsolete.

Sets the key name and additional field name to create a geospatial haystack index on.

Namespace:  MongoDB.Driver.Builders
Assembly:  MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.16.0+eeafbea0921243a5868b81984e1083a07c1f75bc
Syntax
[ObsoleteAttribute("GeoHaystack indexes were deprecated in server version 4.4.")]
public static IndexKeysBuilder<TDocument> GeoSpatialHaystack<TMember, TAdditionalMember>(
	Expression<Func<TDocument, TMember>> memberExpression,
	Expression<Func<TDocument, TAdditionalMember>> additionalMemberExpression
)

Parameters

memberExpression
Type: System.Linq.ExpressionsExpressionFuncTDocument, TMember
The member expression.
additionalMemberExpression
Type: System.Linq.ExpressionsExpressionFuncTDocument, TAdditionalMember
The additional member expression.

Type Parameters

TMember
The type of the member.
TAdditionalMember
The type of the additional member.

Return Value

Type: IndexKeysBuilderTDocument
The builder (so method calls can be chained).
See Also