Hook: Define a Gate

Requirement

A new gate must be defined as part of a process.

Method of Adaptation

Enable Feature

Level of Support

Parameter Pattern

HotSpot

Processes

Hooks used

Define a Transition

Participants

Gate, NewGate , newGate

Changes

1. implement NewGate of Gate.
2. NewGate.getNextTransition implements Gate.getNextTransition .
3. NewGate.getNextTransition performs some activity at the gate (e.g. display FormSheets/MenuSheets, decide on branches, etc.).
4. NewGate.getNextTransition returns Define a Transition [newTransition].
5. instance newGate of NewGate.

Constraints

• This hook is usually invoked in the context of Define a new process only.

Comments

• Activities at gates can be any duration you want, but they must be interruptible at any time, at least at any time that they block in a wait , sleep or sale.Display.setFormSheet . Interruptibility is achieved by propagating upward any InterruptedException that occurs in the code. Also, in hard cases, you should check from time to time.