if ("".equals(text)) {
text = null;
}
}
constraint.setConstraint(text);
splitNode.internalSetConstraint(connectionRef, constraint);
} else if (parent instanceof Constrainable) {
Constrainable constrainable = (Constrainable) parent;
String text = ((Text)element.getChildNodes().item( 0 )).getWholeText();
if (text != null) {
text = text.trim();