protected volatile long executeTime = 0;

    protected final DocList docList = new DocList();

    protected long maxDocumentRequestSize;

    protected int maxDocumentCacheSize;

    private IngestFactory ingestFactory = null;

    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());

                builder.setQuery(queryBuilder);
                builder.setFrom(0);
                final int maxDocumentCacheSize = fessConfig.getIndexerWebfsMaxDocumentCacheSizeAsInteger();
                builder.setSize(maxDocumentCacheSize <= 0 ? 1 : maxDocumentCacheSize);
                builder.addSort(EsAccessResult.CREATE_TIME, SortOrder.ASC);
            };