final Thread bgThread = new Thread(new LongRunningOperation(display) {

	@Ovveride
	public void executeOperation(final IProgressMonitor monitor) {
		//Long running operation
		final Object[] result = fetchData();
		if (display != null && !display.isDisposed()) {
			display.syncExec(new Runnable() {
				@Override
					public void run() {
						refreshUI();
						monitor.done();
						deactivateUICallBack(CALLBACK_ID);
					}
			});
		}
	}
});
bgThread.setDaemon(true);
bgThread.start();


public abstract class LongRunningOperation implements IRunnableWithProgress, Runnable {
    private final Display display;

	public LongRunningOperation(Display aDisplay) {
        this.display = aDisplay;
    }	
		
	public abstract void executeOperation(IProgressMonitor monitor);
		
	public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
        monitor.beginTask("Bitte warten. Daten werden vorbereitet...", IProgressMonitor.UNKNOWN);
        executeOperation(monitor);
        throw new InterruptedException();
    }	
	
	 @Override
    public void run() {
        final LongRunningOperation thisRunnbale = this;
        display.syncExec(new Runnable() {
            @Override
            public void run() {
                ProgressMonitorDialog dialog = new ProgressMonitorDialog(display.getActiveShell());

                try {
                    dialog.run(true, false, thisRunnbale);
                } catch (InvocationTargetException e) {
                    MyLogger.getLogger().fatal("", e);
                } catch (InterruptedException e) {
                    //nothing to do
                } 
            }
        });
    }
}