Aggregate Events

Introduction

Aggregate events are triggered when performing aggregate operations.

Types of Events

There are three types of events in the Aggregate:

1. fetching: This event is triggered when calling get, first, latest, oldest or count methods.
2. updating: This event is triggered when calling update method.
3. deleting: This event is triggered when calling delete method.

Accessing Aggregate Events

To access the Aggregate events manager, call the events() method on the Aggregate class (not the instance).

src/app.ts

import { Aggregate } from "@warlock.js/cascade";

Aggregate.events()
  .onFetching((aggregate) => {
    // do something
  })
  .onUpdating((aggregate) => {
    // do something
  })
  .onDeleting((aggregate) => {
    // do something
  });