@SuppressWarnings("unchecked")
private void refreshDerivedFeature() {
logger.trace("[Notify: " + derivedFeature.getName() + "] Derived refresh.");
try {
if (source.eNotificationRequired()) {
if (type == null) {
type = derivedFeature.getEType();
}
if (derivedFeature.isMany()) {
if (currentValue != null) {
oldValue = new HashSet<EObject>((Collection<EObject>) currentValue);
} else {
oldValue = new HashSet<EObject>();
}
currentValue = new HashSet<EObject>();
Collection<? extends Object> targets =
(Collection<? extends Object>) source.eGet(derivedFeature);
int position = 0;
for (Object target : targets) {
comprehension.traverseFeature(visitor, source, derivedFeature, target, position++);
}
if (currentValue instanceof Collection<?> && oldValue instanceof Collection<?>) {
((Collection<?>) oldValue).removeAll((Collection<?>) currentValue);
if (((Collection<?>) oldValue).size() > 0) {
sendRemoveManyNotification(source, derivedFeature, oldValue);
}
}
} else {
Object target = source.eGet(derivedFeature);
comprehension.traverseFeature(visitor, source, derivedFeature, target, null);
}
}
} catch (Exception ex) {
logger.error(
"The derived feature adapter encountered an error in processing the EMF model. "
+ "This happened while maintaining the derived feature "
+ derivedFeature.getName()
+ " of object "
+ source,
ex);
}
}
@Override
protected boolean isNotificationRequired() {
return owner.eNotificationRequired();
}