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

Constructors

Unwind(Field field, {String includeArrayIndex, bool preserveNullAndEmptyArrays})
Creates $unwind aggregation stage [...]

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build() Map<String, dynamic>
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited