IAggregateFluentExtensions.BucketAuto<TResult, TValue, TNewResult> Method (IAggregateFluent<TResult>, Expression<Func<TResult, TValue>>, Int32, Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TResult>, TNewResult>>, AggregateBucketAutoOptions) |
Appends a $bucketAuto stage to the pipeline (this overload can only be used with LINQ3).
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242
Syntaxpublic static IAggregateFluent<TNewResult> BucketAuto<TResult, TValue, TNewResult>(
this IAggregateFluent<TResult> aggregate,
Expression<Func<TResult, TValue>> groupBy,
int buckets,
Expression<Func<IGrouping<AggregateBucketAutoResultId<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 AggregateBucketAutoResultId(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<AggregateBucketAutoResultId<'TValue>, 'TResult>, 'TNewResult>> *
?options : AggregateBucketAutoOptions
(* Defaults:
let _options = defaultArg options null
*)
-> IAggregateFluent<'TNewResult>
Parameters
- aggregate
- Type: MongoDB.Driver.IAggregateFluent<TResult>
The aggregate. - groupBy
- Type: System.Linq.Expressions.Expression<Func<TResult, TValue>>
The expression providing the value to group by. - buckets
- Type: System.Int32
The number of buckets. - output
- Type: System.Linq.Expressions.Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TResult>, TNewResult>>
The output projection. - options (Optional)
- Type: MongoDB.Driver.AggregateBucketAutoOptions
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:
IAggregateFluent<TNewResult>The fluent aggregate interface.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IAggregateFluent<TResult>. 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