@Override
    protected Extractor getExtractor(final ResponseData responseData) {
        final ExtractorFactory extractorFactory = ComponentUtil.getExtractorFactory();
        if (extractorFactory == null) {
            throw new FessSystemException("Could not find extractorFactory.");
        }
        Extractor extractor = extractorFactory.getExtractor(responseData.getMimeType());
        if (extractor == null) {

    @Override
    protected Extractor getExtractor(final ResponseData responseData) {
        final ExtractorFactory extractorFactory = ComponentUtil.getExtractorFactory();
        if (extractorFactory == null) {
            throw new FessSystemException("Could not find extractorFactory.");
        }
        final Extractor extractor = extractorFactory.getExtractor(responseData.getMimeType());
        if (logger.isDebugEnabled()) {

    private static final String INDEX_UPDATER = "indexUpdater";

    private static final String FILE_TYPE_HELPER = "fileTypeHelper";

    private static final String EXTRACTOR_FACTORY = "extractorFactory";

    private static final String INTERVAL_CONTROL_HELPER = "intervalControlHelper";

    private static final String DATA_STORE_FACTORY = "dataStoreFactory";