Unwind class

$unwind aggregation stage

Stage description

Deconstructs an array field from the input documents to output a document for each element. Each output document is the input document with the value of the array field replaced by the element.

Examples:

Dart code:

Unwind(Field('sizes')).build()

Equivalent mongoDB aggregation stage:

{$unwind : {path: "$sizes"}}

https://docs.mongodb.com/manual/reference/operator/aggregation/unwind/

Inheritance

• Object
• AggregationStage
• Unwind

Constructors

Unwind(Field field, {String? includeArrayIndex, bool? preserveNullAndEmptyArrays})

Creates $unwind aggregation stage

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build() → Map<String, Object>

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited