return null;
    }

    @Override
    protected void doFetchFirst() {
    }

    @Override
    protected void doFetchPage() {
    }

    @Override
    protected void doClearFetchPageClause() {
    }

    @Override
    protected String createSelectHint() {
        return null;
    }

    @Override
    protected String createFromBaseTableHint() {
        return null;
    }

    /** boost */
    protected Float boost;

    /** createdBy */
    protected String createdBy;

    /** createdTime */
    protected Long createdTime;

    /** permissions */
    protected String[] permissions;

    /** reading */
    protected String reading;

    /** suggestWord */
    protected String suggestWord;

    /** updatedBy */

        }
        return _specification;
    }

    protected void assertQueryPurpose() {
    }

    protected void assertAggregationPurpose() {
    }

    protected void assertSpecifyPurpose() {
    }

    public static class HpSpecification {
        protected List<String> columnList = new ArrayList<>();

        public void doColumn(String name) {

        return facadeSelectByPK(id);
    }

    protected OptionalEntity<ScheduledJob> facadeSelectByPK(String id) {
        return doSelectOptionalByPK(id, typeOfSelectedEntity());
    }

    protected <ENTITY extends ScheduledJob> ENTITY doSelectByPK(String id, Class<? extends ENTITY> tp) {
        return doSelectEntity(xprepareCBAsPK(id), tp);
    }

    protected ScheduledJobCB xprepareCBAsPK(String id) {

    private static final String KEY_PROPERTY = "";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    //                                                                          ==========
    protected final String _tableDbName = "request_header";
    protected final String _tableDispName = "request_header";
    protected final String _tablePropertyName = "RequestHeader";

    public String getTableDbName() {
        return _tableDbName;
    }

    @Override

     */
    protected String roleSeparator = ",";

    /**
     * The key for the request parameter that contains role information.
     */
    protected String parameterKey;

    /**
     * Whether the parameter value is encrypted.
     */
    protected boolean encryptedParameterValue = true;

    /**
     * The key for the request header that contains role information.
     */
    protected String headerKey;

    /**

    private static final Logger logger = LogManager.getLogger(FessUrlQueueService.class);

    /** Configuration value for sequential URL processing order */
    protected static final String ORDER_SEQUENTIAL = "sequential";

    /** Configuration value for random URL processing order */
    protected static final String ORDER_RANDOM = "random";

    /**
     * Constructs a new FessUrlQueueService with the specified crawler configuration.
     *

    private final Queue<T> backingQueue;

    StandardImplForwardingQueue(Queue<T> backingQueue) {
      this.backingQueue = backingQueue;
    }

    @Override
    protected Queue<T> delegate() {
      return backingQueue;
    }

    @Override
    public boolean addAll(Collection<? extends T> collection) {
      return standardAddAll(collection);
    }

    @Override

    protected long userCheckInterval = 10 * 60 * 1000L; // 10 min

    /** Maximum size of the user information cache. */
    protected int userInfoCacheSize = 10000;

    /** Queue for storing search logs. */
    protected Queue<SearchLog> searchLogQueue = new ConcurrentLinkedQueue<>();

    /** Queue for storing click logs. */