Event

An event is a record used to trigger dataflows. Events can be injected into the system by external clients or may be created by patterns in a dataflow. When an event instance enters the system, the dataflow attached to that event is evaluated. The event-instance will be replaced by the result of this evaluation. We will learn more about event-based patterns in the dataflow section.

Event Context

All events will have a system-defined attribute called :EventContext whose value will be a generic map. If authentication is enabled for the application. :EventContext for all events will contain the key :User which will contain the logged-in username. This value is filled-in by the REST API layer.