PipelineDefinitionBuilderUnwindTInput, TIntermediate, TOutput Method (PipelineDefinitionTInput, TIntermediate, ExpressionFuncTIntermediate, Object, AggregateUnwindOptionsTOutput) |
Appends an unwind 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> Unwind<TInput, TIntermediate, TOutput>(
this PipelineDefinition<TInput, TIntermediate> pipeline,
Expression<Func<TIntermediate, Object>> field,
AggregateUnwindOptions<TOutput> options = null
)
<ExtensionAttribute>
Public Shared Function Unwind(Of TInput, TIntermediate, TOutput) (
pipeline As PipelineDefinition(Of TInput, TIntermediate),
field As Expression(Of Func(Of TIntermediate, Object)),
Optional options As AggregateUnwindOptions(Of TOutput) = Nothing
) As PipelineDefinition(Of TInput, TOutput)
[<ExtensionAttribute>]
static member Unwind :
pipeline : PipelineDefinition<'TInput, 'TIntermediate> *
field : Expression<Func<'TIntermediate, Object>> *
?options : AggregateUnwindOptions<'TOutput>
(* Defaults:
let _options = defaultArg options null
*)
-> PipelineDefinition<'TInput, 'TOutput>
Parameters
- pipeline
- Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
The pipeline. - field
- Type: System.Linq.ExpressionsExpressionFuncTIntermediate, Object
The field to unwind. - options (Optional)
- Type: MongoDB.DriverAggregateUnwindOptionsTOutput
The options.
Type Parameters
- TInput
- The type of the input documents.
- TIntermediate
- The type of the intermediate documents.
- 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