Transition::trigger

Chain on a CallBehaviorAction for an Operation trigger of a Transition with an effect

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Tutorial

HOWTO return chain on a CallBehaviorAction for an Operation trigger of a Transition with an effect

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SysML Activity Diagram

SysML Block Definition Diagram (BDD)

SysML StateMachine Diagram

Cameo Simulation Toolkit matches the Parameters of an effect Behavior and a trigger Operation on a Transition under the hood.

HOWTO return chain on a CallBehaviorAction for an Operation trigger of a Transition with an effect

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Chain on a CallBehaviorAction for an Operation trigger of a Transition with an effect

Sections

UML-2.5.1 does NOT permit a trigger or guard on a Transition from an initial pseudostate in a StateMachine but Cameo/MagicDraw does (please avoid).

When multiple triggers are defined for a Transition, they are logically disjunctive, that is, if any of them are enabled, the Transition will be triggered.

Source

Unified Modeling Language 2.5.1

A Transition may own a set of Triggers, each of which specifies an Event whose occurrence, when dispatched, may trigger traversal of the Transition. A Transition trigger is said to be enabled if the dispatched Event occurrence matches its Event type.

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Unified Modeling Language 2.5.1

Transitions

This content has been marked as discussing an ADVANCED topic!

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Tutorial

TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo

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01:03: UML Behavior: StateMachines quick start

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UML StateMachine Diagram

Transition::trigger : Trigger [0..*] ... Specifies the Triggers that may fire the transition

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Unified Modeling Language 2.5.1

StateMachine execution is represented by transitions from one active state configuration to another in response to Event occurrences that match the Triggers of the StateMachine.

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Unified Modeling Language 2.5.1

An Event is the specification of some occurrence that may potentially trigger effects by an object.

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Unified Modeling Language 2.5.1

StateMachine for the Dialer class

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Tutorial

HOWTO simulate UML-2.5.1 'Figure 14.7 Composite State with two States' in Cameo Simulation Toolkit - Operation-driven Transition case study

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UML StateMachine Diagram

The Transitions outgoing from a fork Pseudostate cannot have a guard or a trigger.

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Unified Modeling Language 2.5.1

Transitions terminating on a join Pseudostate cannot have a guard or a trigger.

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Unified Modeling Language 2.5.1

Screencast: Mini tutorial: UML/SysML: Cameo Simulation Toolkit: StateMachine with doActivity and a Transition with a ChangeEvent trigger

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A very simple demonstration of a StateMachine with a doActivity and a Transition that uses a trigger with a ChangeEvent for checking a value. Uses SysML but the same applies to UML.

Uses Magic Model Analyst^® (Cameo Simulation Toolkit^®) for MagicDraw SysML and Cameo System Modeler Enterprise Edition.

© Copyright 2020 Darren R C Kelly (Webel IT Australia). All rights reserved.

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