IAggregateFluentExtensionsBucketAutoTResult, TValue, TNewResult Method (IAggregateFluentTResult, ExpressionFuncTResult, TValue, Int32, ExpressionFuncIGroupingTValue, TResult, TNewResult, AggregateBucketAutoOptions) |
Appends a $bucketAuto stage to the pipeline.
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.9.0+32b058abcdf2c7e8d9dd3a676d207b31897eee2e
Syntax public static IAggregateFluent<TNewResult> BucketAuto<TResult, TValue, TNewResult>(
this IAggregateFluent<TResult> aggregate,
Expression<Func<TResult, TValue>> groupBy,
int buckets,
Expression<Func<IGrouping<TValue, TResult>, TNewResult>> output,
AggregateBucketAutoOptions options = null
)
<ExtensionAttribute>
Public Shared Function BucketAuto(Of TResult, TValue, TNewResult) (
aggregate As IAggregateFluent(Of TResult),
groupBy As Expression(Of Func(Of TResult, TValue)),
buckets As Integer,
output As Expression(Of Func(Of IGrouping(Of TValue, TResult), TNewResult)),
Optional options As AggregateBucketAutoOptions = Nothing
) As IAggregateFluent(Of TNewResult)
[<ExtensionAttribute>]
static member BucketAuto :
aggregate : IAggregateFluent<'TResult> *
groupBy : Expression<Func<'TResult, 'TValue>> *
buckets : int *
output : Expression<Func<IGrouping<'TValue, 'TResult>, 'TNewResult>> *
?options : AggregateBucketAutoOptions
(* Defaults:
let _options = defaultArg options null
*)
-> IAggregateFluent<'TNewResult>
Parameters
- aggregate
- Type: MongoDB.DriverIAggregateFluentTResult
The aggregate. - groupBy
- Type: System.Linq.ExpressionsExpressionFuncTResult, TValue
The expression providing the value to group by. - buckets
- Type: SystemInt32
The number of buckets. - output
- Type: System.Linq.ExpressionsExpressionFuncIGroupingTValue, TResult, TNewResult
The output projection. - options (Optional)
- Type: MongoDB.DriverAggregateBucketAutoOptions
The options (optional).
Type Parameters
- TResult
- The type of the result.
- TValue
- The type of the value.
- TNewResult
- The type of the new result.
Return Value
Type:
IAggregateFluentTNewResultThe fluent aggregate interface.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IAggregateFluentTResult. When you use instance method syntax to call this method, omit the first parameter. For more information, see
Extension Methods (Visual Basic) or
Extension Methods (C# Programming Guide).
See Also