IAggregateFluentExtensionsBucketAutoTResult, TValue, TNewResult Method (IAggregateFluentTResult, ExpressionFuncTResult, TValue, Int32, ExpressionFuncIGroupingTValue, TResult, TNewResult, AggregateBucketAutoOptions) (original) (raw)
Appends a $bucketAuto stage to the pipeline.
Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
Syntax
public static IAggregateFluent BucketAuto<TResult, TValue, TNewResult>( this IAggregateFluent aggregate, Expression<Func<TResult, TValue>> groupBy, int buckets, Expression<Func<IGrouping<TValue, TResult>, TNewResult>> output, AggregateBucketAutoOptions options = null )
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)[] 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: IAggregateFluentTNewResult
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 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