GenericEnrichedActivity<A, Ob, T, Or> class
Enrichment is a concept in Stream that enables our API to work quickly and efficiently.
It is the concept that most data is stored as references to an original data. For example, if I add an activity to my feed and it fans out to 50 followers, the activity is not copied 50 times, but the activity is stored in a single table only once, and references are stored in 51 feeds.
The same rule applies to users and reactions. They are stored only once, but references are used elsewhere.
An Enriched Activity is an Activity with additional fields that are derived from the Activity's
This class makes use of generics in order to have a more flexible API surface. Here is a legend of what each generic is for:
- Annotations
-
- @JsonSerializable(genericArgumentFactories: true)
- @DateTimeUTCConverter()
Constructors
-
GenericEnrichedActivity({String? id, A? actor, String? verb, Ob? object, String? foreignId, T? target, DateTime? time, Or? origin, List<
String> ? to, double? score, Map<String, Object> ? analytics, Map<String, Object> ? extraContext, Map<String, Object?> ? extraData, Map<String, int> ? reactionCounts, Map<String, List< ? ownReactions, Map<Reaction> >String, List< ? latestReactions})Reaction> > -
Builds an GenericEnrichedActivity.
const
-
GenericEnrichedActivity.fromJson(Map<
String, dynamic> ? json, [A fromJsonA(Object? json)?, Ob fromJsonOb(Object? json)?, T fromJsonT(Object? json)?, Or fromJsonOr(Object? json)?]) -
Create a new instance from a JSON object
factory
Properties
- actor → A?
-
The actor performing the activity.
final
-
analytics
→ Map<
String, Object> ? -
final
-
extraContext
→ Map<
String, Object> ? -
final
-
extraData
→ Map<
String, Object?> ? -
Map of custom user extraData
final
- foreignId → String?
-
A unique ID from your application for this activity.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- id → String?
-
The Stream id of the activity.
final
-
latestReactions
→ Map<
String, List< ?Reaction> > -
Include recent reactions to activities.
final
- object → Ob?
-
The object of the activity.
final
- origin → Or?
-
The feed id where the activity was posted.
final
-
ownReactions
→ Map<
String, List< ?Reaction> > -
Include reactions added by current user to all activities.
final
-
props
→ List<
Object?> -
The list of properties that will be used to determine whether
two instances are equal.
no setter
-
reactionCounts
→ Map<
String, int> ? -
Include reaction counts to activities.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- score → double?
-
final
- stringify → bool?
-
If set to
true
, the toString method will be overridden to output this instance's props.no setterinherited - target → T?
-
Describes the target of the activity.
final
- time → DateTime?
-
The optional time of the activity in iso format.
final
-
to
→ List<
String> ? -
An array allows you to specify a list of feeds to which the activity
should be copied.
final
- verb → String?
-
The verb of the activity.
final
Methods
-
copyWith(
{A? actor, Ob? object, String? verb, T? target, List< String> ? to, String? foreignId, String? id, DateTime? time, Map<String, Object> ? analytics, Map<String, Object> ? extraContext, Or? origin, double? score, Map<String, Object> ? extraData, Map<String, int> ? reactionCounts, Map<String, List< ? ownReactions, Map<Reaction> >String, List< ? latestReactions}) → GenericEnrichedActivity<Reaction> >A, Ob, T, Or> -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
Object? toJsonA(A value), Object? toJsonOb(Ob value), Object? toJsonT(T value), Object? toJsonOr(Or value)) → Map< String, dynamic> - Serialize to JSON
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
-
topLevelFields
→ const List<
String> -
Known top level fields.
Useful for
Serializer
methods.