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MongoCollectionBaseTDocumentMapReduceAsyncTResult Method (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: 2.16.0+eeafbea0921243a5868b81984e1083a07c1f75bc
Syntax
[ObsoleteAttribute("Use Aggregation pipeline instead.")]
public abstract Task<IAsyncCursor<TResult>> MapReduceAsync<TResult>(
	BsonJavaScript map,
	BsonJavaScript reduce,
	MapReduceOptions<TDocument, TResult> options = null,
	CancellationToken cancellationToken = default
)

Parameters

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: TaskIAsyncCursorTResult
A Task whose result is a cursor.

Implements

IMongoCollectionTDocumentMapReduceAsyncTResult(BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken)
See Also