PipelineDefinitionBuilder.BucketAuto<TInput, TIntermediate, TValue, TOutput> Method (PipelineDefinition<TInput, TIntermediate>, Expression<Func<TIntermediate, TValue>>, Int32, Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TIntermediate>, TOutput>>, AggregateBucketAutoOptions, ExpressionTranslationOptions) |
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: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2
Syntax public static PipelineDefinition<TInput, TOutput> BucketAuto<TInput, TIntermediate, TValue, TOutput>(
this PipelineDefinition<TInput, TIntermediate> pipeline,
Expression<Func<TIntermediate, TValue>> groupBy,
int buckets,
Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TIntermediate>, TOutput>> output,
AggregateBucketAutoOptions options = null,
ExpressionTranslationOptions translationOptions = null
)
<ExtensionAttribute>
Public Shared Function BucketAuto(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 AggregateBucketAutoResultId(Of TValue), TIntermediate), TOutput)),
Optional options As AggregateBucketAutoOptions = Nothing,
Optional translationOptions As ExpressionTranslationOptions = Nothing
) As PipelineDefinition(Of TInput, TOutput)
[<ExtensionAttribute>]
static member BucketAuto :
pipeline : PipelineDefinition<'TInput, 'TIntermediate> *
groupBy : Expression<Func<'TIntermediate, 'TValue>> *
buckets : int *
output : Expression<Func<IGrouping<AggregateBucketAutoResultId<'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.Driver.PipelineDefinition<TInput, TIntermediate>
The pipeline. - groupBy
- Type: System.Linq.Expressions.Expression<Func<TIntermediate, TValue>>
The group by expression. - buckets
- Type: System.Int32
The number of buckets. - output
- Type: System.Linq.Expressions.Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TIntermediate>, TOutput>>
The output projection. - options (Optional)
- Type: MongoDB.Driver.AggregateBucketAutoOptions
The options (optional). - translationOptions (Optional)
- Type: MongoDB.Driver.ExpressionTranslationOptions
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:
PipelineDefinition<TInput,
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
PipelineDefinition<TInput,
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