Debug.out ("ClusterQuery.ClusterQuery demand host is " + host);
    public ClusterQuery(PlanElementProvider provider, String host)    {	super();	this.provider = provider;	listeners = new Vector();	setName("ClusterQueryDialog");	setTitle("Structured Cluster Query");	setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);	setBounds(25, 50, 600, 725);	this.host = host;	setContentPane(getQueryContentPane());    }