| MongoCollectionBaseTDocumentMapReduceAsyncTResult Method (IClientSessionHandle, BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken) | 
 
            Executes a map-reduce command.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.7.3+Branch.v2.7.x.Sha.2f1f2be13a23b8520cb9c2ee8439c022f9a03efe
 Syntax
Syntaxpublic virtual Task<IAsyncCursor<TResult>> MapReduceAsync<TResult>(
	IClientSessionHandle session,
	BsonJavaScript map,
	BsonJavaScript reduce,
	MapReduceOptions<TDocument, TResult> options = null,
	CancellationToken cancellationToken = null
)
Public Overridable Function MapReduceAsync(Of TResult) ( 
	session As IClientSessionHandle,
	map As BsonJavaScript,
	reduce As BsonJavaScript,
	Optional options As MapReduceOptions(Of TDocument, TResult) = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of IAsyncCursor(Of TResult))
abstract MapReduceAsync : 
        session : IClientSessionHandle * 
        map : BsonJavaScript * 
        reduce : BsonJavaScript * 
        ?options : MapReduceOptions<'TDocument, 'TResult> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<IAsyncCursor<'TResult>> 
override MapReduceAsync : 
        session : IClientSessionHandle * 
        map : BsonJavaScript * 
        reduce : BsonJavaScript * 
        ?options : MapReduceOptions<'TDocument, 'TResult> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<IAsyncCursor<'TResult>> 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: 
TaskIAsyncCursorTResult
            A Task whose result is a cursor.
            
Implements
IMongoCollectionTDocumentMapReduceAsyncTResult(IClientSessionHandle, BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken) See Also
See Also