public static ReaderProvider createReaderProvider(SearchConfiguration cfg,
    SearchFactoryImplementor searchFactoryImplementor) 
{
		Properties props = getProperties( cfg );
		String impl = props.getProperty( Environment.READER_STRATEGY );
		ReaderProvider readerProvider;
		if ( StringHelper.isEmpty( impl ) ) {
			//put another one
			readerProvider = new SharingBufferReaderProvider();
		}
		else if ( "not-shared".equalsIgnoreCase( impl ) ) {
			readerProvider = new NotSharedReaderProvider();
		}
		else if ( "shared".equalsIgnoreCase( impl ) ) {
			readerProvider = new SharingBufferReaderProvider();
		}
		//will remove next "else":
		else if ( "shared-segments".equalsIgnoreCase( impl ) ) {
			readerProvider = new SharingBufferReaderProvider();
		}
		else {
			try {
				Class readerProviderClass = ReflectHelper.classForName( impl, ReaderProviderFactory.class );
				readerProvider = (ReaderProvider) readerProviderClass.newInstance();
			}
			catch (ClassNotFoundException e) {
				throw new SearchException( "Unable to find readerProvider class: " + impl, e );
			}
			catch (IllegalAccessException e) {
				throw new SearchException( "Unable to instanciate readerProvider class: " + impl, e );
			}
			catch (InstantiationException e) {
				throw new SearchException( "Unable to instanciate readerProvider class: " + impl, e );
			}
		}
		readerProvider.initialize( props, searchFactoryImplementor );
		return readerProvider;
}