UML.Semantic.BehavioralElements.StateMachines
Class ChangeEvent

java.lang.Object
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  +--UML.Semantic.Foundation.Core.ModelElement
        |
        +--UML.Semantic.BehavioralElements.StateMachines.Event
              |
              +--UML.Semantic.BehavioralElements.StateMachines.ChangeEvent

All Implemented Interfaces:

Element, ElementAtt, LinkAtt

public class ChangeEvent

extends Event

A change event is an event that is generated when one or more attributes or relationships change value according to an explicit expression.

A change event is never raised by an explicit change event action. Instead, it is a consequence of the execution of one or more actions that modify the values of elements that are referenced in the boolean expression. The corresponding change event is actually raised by the underlying run-time system that detects that the condition has changed to true

A change event functions as a trigger for transitions, and must not be confused with a guard. When a change event occurs, a guard can still block any transition that would otherwise be triggered by that change.

In the metamodel ChangeEvent is a subclass of Event, which is the abstract class that represents all events that trigger a StateMachine.

Constructor Summary

ChangeEvent()

Method Summary

boolean

check() Checks if well-formedness rules are respected in this model element.

Methods inherited from class UML.Semantic.Foundation.Core.ModelElement

add, add, getBindingList, getConstraintList, getElementType, getErrors, getHref, getId, getIdentification, getIdref, getIndex, getInfo, getIsOwned, getLabel, getLocator, getName, getNamespace, getNamespaceId, getStereotype, getTemplate, getTemplateParameterList, getTitle, getUuid, getUuidref, getVisibility, getVisibilitySymbol, getWarnings, setElementType, setErrors, setHref, setId, setIdref, setIndex, setIsOwned, setLabel, setName, setNamespace, setTemplate, setTitle, setUuid, setUuidref, setVisibility, setWarnings

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChangeEvent

public ChangeEvent()

Method Detail

check

public boolean check()

Checks if well-formedness rules are respected in this model element.

Overrides:

check in class Event

Returns:

True if check was successful, false otherwise.