IMongoCollectionTDocumentMapReduceTResult Method (IClientSessionHandle, BsonJavaScript, BsonJavaScript, MapReduceOptionsTDocument, TResult, CancellationToken) |
Executes a map-reduce command.
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
Syntax IAsyncCursor<TResult> MapReduce<TResult>(
IClientSessionHandle session,
BsonJavaScript map,
BsonJavaScript reduce,
MapReduceOptions<TDocument, TResult> options = null,
CancellationToken cancellationToken = null
)
Function MapReduce(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 IAsyncCursor(Of TResult)
abstract MapReduce :
session : IClientSessionHandle *
map : BsonJavaScript *
reduce : BsonJavaScript *
?options : MapReduceOptions<'TDocument, 'TResult> *
?cancellationToken : CancellationToken
(* Defaults:
let _options = defaultArg options null
let _cancellationToken = defaultArg cancellationToken null
*)
-> 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:
IAsyncCursorTResult
A cursor.
See Also