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AggregateFluentBaseTResultGraphLookupTFrom, TConnectFrom, TConnectTo, TStartWith, TAsElement, TAs, TNewResult Method
Appends a $graphLookup stage to the pipeline.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.4.1
Syntax
public virtual IAggregateFluent<TNewResult> GraphLookup<TFrom, TConnectFrom, TConnectTo, TStartWith, TAsElement, TAs, TNewResult>(
	IMongoCollection<TFrom> from,
	FieldDefinition<TFrom, TConnectFrom> connectFromField,
	FieldDefinition<TFrom, TConnectTo> connectToField,
	AggregateExpressionDefinition<TResult, TStartWith> startWith,
	FieldDefinition<TNewResult, TAs> as,
	FieldDefinition<TAsElement, int> depthField,
	AggregateGraphLookupOptions<TFrom, TAsElement, TNewResult> options = null
)
where TAs : Object, IEnumerable<TAsElement>

Parameters

from
Type: MongoDB.DriverIMongoCollectionTFrom
The from collection.
connectFromField
Type: MongoDB.DriverFieldDefinitionTFrom, TConnectFrom
The connect from field.
connectToField
Type: MongoDB.DriverFieldDefinitionTFrom, TConnectTo
The connect to field.
startWith
Type: MongoDB.DriverAggregateExpressionDefinitionTResult, TStartWith
The start with value.
as
Type: MongoDB.DriverFieldDefinitionTNewResult, TAs
The as field.
depthField
Type: MongoDB.DriverFieldDefinitionTAsElement, Int32
The depth field.
options (Optional)
Type: MongoDB.DriverAggregateGraphLookupOptionsTFrom, TAsElement, TNewResult
The options.

Type Parameters

TFrom
The type of the from documents.
TConnectFrom
The type of the connect from field (must be either TConnectTo or a type that implements IEnumerable{TConnectTo}).
TConnectTo
The type of the connect to field.
TStartWith
The type of the start with expression (must be either TConnectTo or a type that implements IEnumerable{TConnectTo}).
TAsElement
The type of the as field elements.
TAs
The type of the as field.
TNewResult
The type of the new result (must be same as TResult with an additional as field).

Return Value

Type: IAggregateFluentTNewResult
The fluent aggregate interface.

Implements

IAggregateFluentTResultGraphLookupTFrom, TConnectFrom, TConnectTo, TStartWith, TAsElement, TAs, TNewResult(IMongoCollectionTFrom, FieldDefinitionTFrom, TConnectFrom, FieldDefinitionTFrom, TConnectTo, AggregateExpressionDefinitionTResult, TStartWith, FieldDefinitionTNewResult, TAs, FieldDefinitionTAsElement, Int32, AggregateGraphLookupOptionsTFrom, TAsElement, TNewResult)
See Also