ReactiveMongo API
1.1
API
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ReactiveMongo API/reactivemongo.api.commands/AggregationFramework/Lookup

Lookup

reactivemongo.api.commands.AggregationFramework.Lookup$
See theLookup companion class
object Lookup

Performs a left outer join to an unsharded collection in the same database to filter in documents from the "joined" collection for processing .

Attributes

See also:
Since:

MongoDB 3.2

Companion:
class
Graph
Supertypes
class Object
trait Matchable
class Any
Self type
Lookup.type

Members list

Concise view

Value members

Concrete methods

def apply(from: String, localField: String, foreignField: String, as: String): Lookup

Attributes

as

the name of the new array field to add to the input documents

foreignField

the field from the documents in the from collection

from

the collection to perform the join with

localField

the field from the documents input

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