public static Worker createWorker(SearchConfiguration cfg,
    SearchFactoryImplementor searchFactoryImplementor) 
{
		Properties props = getProperties( cfg );
		String impl = props.getProperty( Environment.WORKER_SCOPE );
		Worker worker;
		if ( StringHelper.isEmpty( impl ) ) {
			worker = new TransactionalWorker();
		}
		else if ( "transaction".equalsIgnoreCase( impl ) ) {
			worker = new TransactionalWorker();
		}
		else {
			try {
				Class workerClass = ReflectHelper.classForName( impl, WorkerFactory.class );
				worker = (Worker) workerClass.newInstance();
			}
			catch (ClassNotFoundException e) {
				throw new SearchException( "Unable to find worker class: " + impl, e );
			}
			catch (IllegalAccessException e) {
				throw new SearchException( "Unable to instanciate worker class: " + impl, e );
			}
			catch (InstantiationException e) {
				throw new SearchException( "Unable to instanciate worker class: " + impl, e );
			}
		}
		worker.initialize( props, searchFactoryImplementor );
		return worker;
}