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PipelineDefinitionBuilderBucketTInput, TIntermediate, TValue, TOutput Method (PipelineDefinitionTInput, TIntermediate, ExpressionFuncTIntermediate, TValue, IEnumerableTValue, ExpressionFuncIGroupingTValue, TIntermediate, TOutput, AggregateBucketOptionsTValue, ExpressionTranslationOptions)

Appends a $bucket stage to the pipeline.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.7.3+Branch.v2.7.x.Sha.2f1f2be13a23b8520cb9c2ee8439c022f9a03efe
Syntax
public static PipelineDefinition<TInput, TOutput> Bucket<TInput, TIntermediate, TValue, TOutput>(
	this PipelineDefinition<TInput, TIntermediate> pipeline,
	Expression<Func<TIntermediate, TValue>> groupBy,
	IEnumerable<TValue> boundaries,
	Expression<Func<IGrouping<TValue, TIntermediate>, TOutput>> output,
	AggregateBucketOptions<TValue> options = null,
	ExpressionTranslationOptions translationOptions = null
)

Parameters

pipeline
Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
The pipeline.
groupBy
Type: System.Linq.ExpressionsExpressionFuncTIntermediate, TValue
The group by expression.
boundaries
Type: System.Collections.GenericIEnumerableTValue
The boundaries.
output
Type: System.Linq.ExpressionsExpressionFuncIGroupingTValue, TIntermediate, TOutput
The output projection.
options (Optional)
Type: MongoDB.DriverAggregateBucketOptionsTValue
The options.
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 values.
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