0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnSessionId = cci("sessionId", "sessionId", null, null, String.class, "sessionId", null, false, false,
            false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

    public ColumnInfo columnCreatedTime() {
        return _columnCreatedTime;

/**
 * UrlFilter checks if a given url is a target one.
 *
 * @author shinsuke
 *
 */
public interface UrlFilter {

    /**
     * Initialize a url filter by sessionId.
     *
     * @param sessionId Session ID
     */
    void init(String sessionId);

    /**
     * Check if a given url is a target.
     *
     * @param url URL
     * @return true if url is matched
     */
    boolean match(String url);

        }
        try {
            urlQueueService.delete(sessionId);
        } catch (final Exception e) {
            logger.warn("Failed to delete url queues: {}", sessionId, e);
        }
        try {
            dataService.delete(sessionId);
        } catch (final Exception e) {
            logger.warn("Failed to delete data: {}", sessionId, e);
        }
    }

    @Override

    }

    public ExecJob jobExecutor(final JobExecutor jobExecutor) {
        this.jobExecutor = jobExecutor;
        return this;
    }

    public ExecJob sessionId(final String sessionId) {
        this.sessionId = sessionId;
        return this;
    }

    public ExecJob logFilePath(final String logFilePath) {
        this.logFilePath = logFilePath;
        return this;
    }

    @Override
    public XContentBuilder toXContent(final XContentBuilder builder, final Params params) throws IOException {
        builder.startObject();
        if (sessionId != null) {
            builder.field(SESSION_ID, sessionId);
        }
        if (method != null) {
            builder.field(METHOD, method);
        }
        if (url != null) {
            builder.field(URL, url);
        }

                    uq.setParentUrl(url);
                    uq.setSessionId(crawlerContext.sessionId);
                    uq.setUrl(d.getUrl());
                    uq.setMetaData(d.getMetaData());
                    return uq;
                }).collect(Collectors.toList());
        urlQueueService.offerAll(crawlerContext.sessionId, childList);
    }

            "type" : "long"
          },
          "expiredTime" : {
            "type" : "long"
          },
          "name" : {
            "type" : "keyword"
          },
          "sessionId" : {
            "type" : "keyword"
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "creation_date" : "1509021050413",
        "number_of_shards" : "5",

    }

    default String getParentEncoding(final String parentUrl, final String sessionId) {
        final String key = sessionId + ":" + parentUrl;
        String enc = parentEncodingMap.get(key);
        if (enc != null) {
            return enc;
        }

        final AccessResult<?> accessResult = ComponentUtil.getDataService().getAccessResult(sessionId, parentUrl);
        if (accessResult != null) {

            }

            final String sessionId;
            if (searchLog.getUserSessionId() != null) {
                sessionId = searchLog.getUserSessionId();
            } else if (Constants.SEARCH_LOG_ACCESS_TYPE_WEB.equals(searchLog.getAccessType())) {
                sessionId = searchLog.getClientIp();
            } else {
                sessionId = searchLog.getClientIp() + '_' + searchLog.getSearchWord();

{
    "properties": {
      "sessionId": {
        "type": "keyword"
      },
      "filterType": {
        "type": "keyword"
      },
      "url": {
        "type": "keyword"
      }
    }