Method BucketAutoForLinq2
BucketAutoForLinq2<TInput, TIntermediate, TValue, TOutput>(PipelineDefinition<TInput, TIntermediate>, Expression<Func<TIntermediate, TValue>>, int, Expression<Func<IGrouping<TValue, TIntermediate>, TOutput>>, AggregateBucketAutoOptions, ExpressionTranslationOptions)
Appends a $bucketAuto stage to the pipeline (this method can only be used with LINQ2).
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)
Parameters
pipeline
PipelineDefinition<TInput, TIntermediate>The pipeline.
groupBy
Expression<Func<TIntermediate, TValue>>The group by expression.
buckets
intThe number of buckets.
output
Expression<Func<IGrouping<TValue, TIntermediate>, TOutput>>The output projection.
options
AggregateBucketAutoOptionsThe options (optional).
translationOptions
ExpressionTranslationOptionsThe translation options.
Returns
- PipelineDefinition<TInput, TOutput>
A new pipeline with an additional stage.
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.