| MongoCollectionBaseTDocumentMapReduceTResult Method (BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken) | 
 
            Executes a map-reduce command.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.5.0+57.Branch.master.Sha.6a4e00a2d91090c65a9b11364b9ebfdb9c7da076
 Syntax
Syntaxpublic virtual IAsyncCursor<TResult> MapReduce<TResult>(
	BsonJavaScript map,
	BsonJavaScript reduce,
	MapReduceOptions<TDocument, TResult> options = null,
	CancellationToken cancellationToken = null
)
Public Overridable Function MapReduce(Of TResult) ( 
	map As BsonJavaScript,
	reduce As BsonJavaScript,
	Optional options As MapReduceOptions(Of TDocument, TResult) = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As IAsyncCursor(Of TResult)
abstract MapReduce : 
        map : BsonJavaScript * 
        reduce : BsonJavaScript * 
        ?options : MapReduceOptions<'TDocument, 'TResult> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> IAsyncCursor<'TResult> 
override MapReduce : 
        map : BsonJavaScript * 
        reduce : BsonJavaScript * 
        ?options : MapReduceOptions<'TDocument, 'TResult> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> IAsyncCursor<'TResult> 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: 
IAsyncCursorTResultA cursor.
Implements
IMongoCollectionTDocumentMapReduceTResult(BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken) See Also
See Also