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MongoCollectionBaseTDocumentMapReduceTResult Method (IClientSessionHandle, BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken)

Note: This API is now obsolete.

Executes a map-reduce command.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242
Syntax
[ObsoleteAttribute("Use Aggregation pipeline instead.")]
public virtual IAsyncCursor<TResult> MapReduce<TResult>(
	IClientSessionHandle session,
	BsonJavaScript map,
	BsonJavaScript reduce,
	MapReduceOptions<TDocument, TResult> options = null,
	CancellationToken cancellationToken = null
)

Parameters

session
Type: MongoDB.DriverIClientSessionHandle
The session.
map
Type: MongoDB.BsonBsonJavaScript
The map function.
reduce
Type: MongoDB.BsonBsonJavaScript
The reduce function.
options (Optional)
Type: MongoDB.DriverMapReduceOptionsTDocument, TResult
The options.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Type Parameters

TResult
The type of the result.

Return Value

Type: IAsyncCursorTResult
A cursor.

Implements

IMongoCollectionTDocumentMapReduceTResult(IClientSessionHandle, BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken)
See Also