discontinuedPackage webapp has been discontinued and replaced by finch.

Var class

Aggregation expression's variable

Var can be used to insert user defined an system variables in aggregation expressions

Inheritance

Constructors

Var(String name)
Creates a variable expression
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build() → String
override
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

Constants

clusterTime → const Var
Current timestamp value.
current → const Var
The start of the field path being processed in the aggregation pipeline stage.
discend → const Var
One of the allowed results of a $redact expression.
keep → const Var
One of the allowed results of a $redact expression.
now → const Var
Current datetime value.
prune → const Var
One of the allowed results of a $redact expression.
remove → const Var
A variable which evaluates to the missing value.
root → const Var
The root document.