protected C getDelegate(boolean write) {
if (write) {
state.assertCanMutate();
}
Collection<T> delegate = Cast.uncheckedCast(ScalarCollectionSchema.get(modelNode));
return initialValue(write, delegate);
}
@Override
public Optional<String> getValueDescription(MutableModelNode modelNodeInternal) {
Collection<?> values = ScalarCollectionSchema.get(modelNodeInternal);
if (values == null) {
return Optional.absent();
}
return Optional.of(values.toString());
}
private C initialValue(boolean write, Collection<T> delegate) {
if (delegate == null) {
if (write) {
delegate = createPrivateData(true);
ScalarCollectionSchema.set(modelNode, delegate);
} else {
delegate = createPrivateData(false);
}
}
return Cast.uncheckedCast(delegate);
}