Overview

This helper creates / updates Change Structural Feature Events for the currently selected attributes / value properties. SysML has the concept of an Accept Change Structural Feature Event Action – this is a form of Accept Event Action that detects a change in an attribute value. Rhapsody achieves this with a special kind of event – a Change Structural Feature Event.

Applicable To	Attribute
Menu Entry	Power Pack  Create Structural Feature Event(s)
Demonstration	Watch the Video

Operation

Multiple attributes may be selected – the helper creates / updates Change Structural Feature Events for any selected attribute.

· The new event is created in the same package as the attribute.

· The new event is given a structuralFeature tag with the attribute as its value.

· The name of the event is ‘ch’ followed by the name of the attribute, but this prefix may be changed using the following property:

RhapsodyPowerPack.CreateStructuralFeatureEvent.NamePrefix

You will find it on the Architecture Tools tab of the Power pack property perspective.

The event is given two arguments, both of the same type as the attribute:

· oldValue

· newValue

Lastly the event is added as an event reception to the attribute’s owning classifier.

For example:

A computer screen shot of a computer

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