Aggregation Expression - $arrayToObject

Function Build

Build $arrayToObject with the ArrayToObject function from the aggregation package.

// bson.D{bson.E{Key:"attrs", Value:bson.D{bson.E{Key:"$arrayToObject", Value:"$pairs"}}}}
result := aggregation.ArrayToObject("attrs", "$pairs")

Method Build (Builder)

Build $arrayToObject with the ArrayToObject method from aggregation.NewBuilder().

// bson.D{bson.E{Key:"attrs", Value:bson.D{bson.E{Key:"$arrayToObject", Value:"$pairs"}}}}
result := aggregation.NewBuilder().
    ArrayToObject("attrs", "$pairs").
    Build()

Build Without Key

When an expression needs to be passed as an argument to another expression, use a WithoutKey variant to build an expression fragment without an output field name.

ArrayToObjectWithoutKey

Function build:

// bson.D{bson.E{Key:"$arrayToObject", Value:"$pairs"}}
expr := aggregation.ArrayToObjectWithoutKey("$pairs")

Method build (Builder):

// bson.D{bson.E{Key:"$arrayToObject", Value:"$pairs"}}
expr := aggregation.NewBuilder().
    ArrayToObjectWithoutKey("$pairs").
    Build()