Observer observer;
	private void addObserversToIndexer(DBBroker broker, Indexer indexer) {		Observer observer;		broker.deleteObservers();		if (observers != null) {			for (Iterator i = observers.iterator(); i.hasNext(); ) {				observer = (Observer) i.next();				indexer.addObserver(observer);				broker.addObserver(observer);			}		}	}