Signature

Transient Trigger Patterns

Classification

Trigger Patterns

Intent

The explicit initiation/termination of a task (activity/subprocess) by a signal from the same process or from an external environment.

Motivation

There are cases when an external signal arrives at the process or the process itself raises a signal. However, these signals will be lost if there is no subscriber to act on those signals. These signals are basically events and must be dealt with as soon as they occur, else they will be lost.

Applicability

For example, an activity can be cancelled by a cancel event. However...