PipelineDefinitionBuilderBucketAutoForLinq2TInput, TIntermediate, TValue, TOutput Method |
Appends a $bucketAuto stage to the pipeline (this method can only be used with LINQ2).
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2
Syntax public static PipelineDefinition<TInput, TOutput> BucketAutoForLinq2<TInput, TIntermediate, TValue, TOutput>(
this PipelineDefinition<TInput, TIntermediate> pipeline,
Expression<Func<TIntermediate, TValue>> groupBy,
int buckets,
Expression<Func<IGrouping<TValue, TIntermediate>, TOutput>> output,
AggregateBucketAutoOptions options = null,
ExpressionTranslationOptions translationOptions = null
)
<ExtensionAttribute>
Public Shared Function BucketAutoForLinq2(Of TInput, TIntermediate, TValue, TOutput) (
pipeline As PipelineDefinition(Of TInput, TIntermediate),
groupBy As Expression(Of Func(Of TIntermediate, TValue)),
buckets As Integer,
output As Expression(Of Func(Of IGrouping(Of TValue, TIntermediate), TOutput)),
Optional options As AggregateBucketAutoOptions = Nothing,
Optional translationOptions As ExpressionTranslationOptions = Nothing
) As PipelineDefinition(Of TInput, TOutput)
[<ExtensionAttribute>]
static member BucketAutoForLinq2 :
pipeline : PipelineDefinition<'TInput, 'TIntermediate> *
groupBy : Expression<Func<'TIntermediate, 'TValue>> *
buckets : int *
output : Expression<Func<IGrouping<'TValue, 'TIntermediate>, 'TOutput>> *
?options : AggregateBucketAutoOptions *
?translationOptions : ExpressionTranslationOptions
(* Defaults:
let _options = defaultArg options null
let _translationOptions = defaultArg translationOptions null
*)
-> PipelineDefinition<'TInput, 'TOutput>
Parameters
- pipeline
- Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
The pipeline. - groupBy
- Type: System.Linq.ExpressionsExpressionFuncTIntermediate, TValue
The group by expression. - buckets
- Type: SystemInt32
The number of buckets. - output
- Type: System.Linq.ExpressionsExpressionFuncIGroupingTValue, TIntermediate, TOutput
The output projection. - options (Optional)
- Type: MongoDB.DriverAggregateBucketAutoOptions
The options (optional). - translationOptions (Optional)
- Type: MongoDB.DriverExpressionTranslationOptions
The translation options.
Type Parameters
- TInput
- The type of the input documents.
- TIntermediate
- The type of the intermediate documents.
- TValue
- The type of the value.
- TOutput
- The type of the output documents.
Return Value
Type:
PipelineDefinitionTInput,
TOutput
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
PipelineDefinitionTInput,
TIntermediate. 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