AggregationBuilder class final
Collects aggregation specifications and executes them over documents.
Constructors
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
-
avg(
String field) → AggregationBuilder -
Adds an average over the numeric values of
field. -
count(
[String? field]) → AggregationBuilder -
Adds a count aggregation; with
field, counts non-null values only. -
distinct(
String field) → AggregationBuilder -
Adds a distinct-value count over
field. -
execute(
List< Map< documents) → dynamicString, dynamic> > -
Runs the configured aggregations over
documents. -
groupBy(
String field) → AggregationBuilder -
Groups documents by
fieldbefore aggregating. -
max(
String field) → AggregationBuilder -
Adds a maximum over the values of
field. -
min(
String field) → AggregationBuilder -
Adds a minimum over the values of
field. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
sum(
String field) → AggregationBuilder -
Adds a sum over the numeric values of
field. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited