Aggregation Expression - $not

Function Build

Build $not with the Not function from the aggregation package.

// bson.D{bson.E{Key:"disabled", Value:bson.D{bson.E{Key:"$not", Value:"$isActive"}}}}
result := aggregation.Not("disabled", "$isActive")

Method Build (Builder)

Build $not with the Not method from aggregation.NewBuilder().

// bson.D{bson.E{Key:"disabled", Value:bson.D{bson.E{Key:"$not", Value:"$isActive"}}}}
result := aggregation.NewBuilder().
    Not("disabled", "$isActive").
    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.

NotWithoutKey

Function build:

// bson.D{bson.E{Key:"$not", Value:"$isDeleted"}}
expr := aggregation.NotWithoutKey("$isDeleted")

Method build (Builder):

// bson.D{bson.E{Key:"$not", Value:"$isDeleted"}}
expr := aggregation.NewBuilder().
    NotWithoutKey("$isDeleted").
    Build()