switch (axis) { case Constants.ATTRIBUTE_AXIS : case Constants.CHILD_AXIS : realSet = getNodes(false); break; case Constants.DESCENDANT_AXIS : realSet = getNodes(true); break; }
realSet = getNodes();
	private final void realize() {		System.out.println("realizing node set ...");		if (realSet != null)			return;		switch (axis) {			case Constants.ATTRIBUTE_AXIS :			case Constants.CHILD_AXIS :				realSet = getNodes(false);				break;			case Constants.DESCENDANT_AXIS :				realSet = getNodes(true);				break;		}	}