MagicDraw 2024x Documentation

UML model uses standard java.beans.PropertyChangeEvent events for notifying listeners about changes.  

The main properties of the PropertyChangeEvent are as follows:

  • Property name. The changed property name.
  • New value. The new (current) changed property value.
  • Old value. The old property value, which was before the property change.

Properties names are described in UML model properties names page

Example of the element’s name change event

    propertyChangeEvent.getPropertyName().equals(PropertyNames.NAME); 
    propertyChangeEvent.getNewValue() // will be new name of element; 
    propertyChangeEvent.getOldValue() // will be name of element before change.

Example of the new element creation event

    propertyChangeEvent.getPropertyName().equals(UML2MetamodelConstants.INSTANCE_CREATED); 
    propertyChangeEvent.getNewValue() // will be new created element; 
    propertyChangeEvent.getOldValue() // will be null.
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