<tr>
                                        <th><la:message key="labels.number_of_thread"/></th>
                                        <td>${f:h(numOfThread)}<la:hidden
                                                property="numOfThread"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.interval_time"/></th>

                                    <tr>
                                        <th><la:message key="labels.number_of_thread"/></th>
                                        <td>${f:h(numOfThread)}<la:hidden
                                                property="numOfThread"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.interval_time"/></th>

    public String userAgent;

    /**
     * The number of crawler threads to use.
     */
    @Required
    @Min(value = 1)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer numOfThread;

    /**
     * The interval time between requests in milliseconds.
     */
    @Required
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer intervalTime;

      },
      "configParameter": {
        "type": "keyword"
      },
      "depth": {
        "type": "integer"
      },
      "maxAccessCount": {
        "type": "long"
      },
      "numOfThread": {
        "type": "integer"
      },
      "intervalTime": {
        "type": "integer"
      },
      "timeToLive": {
        "type": "integer"
      },
      "boost": {
        "type": "float"

      },
      "depth": {
        "type": "integer"
      },
      "maxAccessCount": {
        "type": "long"
      },
      "userAgent": {
        "type": "keyword"
      },
      "numOfThread": {
        "type": "integer"
      },
      "intervalTime": {
        "type": "integer"
      },
      "timeToLive": {
        "type": "integer"
      },
      "boost": {
        "type": "float"

    public String urls;

    /**
     * Search criteria: user agent string.
     */
    public String userAgent;

    /**
     * Search criteria: number of threads.
     */
    public String numOfThread;

    /**
     * Search criteria: interval time.
     */
    public String intervalTime;

    /**
     * Search criteria: boost value.
     */
    public String boost;

    /**

            "type" : "integer"
          },
          "maxAccessCount" : {
            "type" : "long"
          },
          "name" : {
            "type" : "keyword"
          },
          "numOfThread" : {
            "type" : "integer"
          },
          "permissions" : {
            "type" : "keyword"
          },
          "sortOrder" : {
            "type" : "integer"
          },

            doColumn("maxAccessCount");
        }

        public void columnName() {
            doColumn("name");
        }

        public void columnNumOfThread() {
            doColumn("numOfThread");
        }

        public void columnPaths() {
            doColumn("paths");
        }

        public void columnPermissions() {
            doColumn("permissions");
        }

### Core Classes

- **Crawler** (`Crawler.java`): Main orchestrator - `execute()`, `addUrl()`, `cleanup()`, `stop()`
- **CrawlerContext** (`CrawlerContext.java`): Execution context - `sessionId`, `status`, `accessCount`, `numOfThread`, `maxDepth`, `maxAccessCount`
- **CrawlerThread** (`CrawlerThread.java`): Worker thread - Poll URL → Validate → Execute → Process → Queue children

### HTTP Client Architecture

```

            result.setMaxAccessCount(DfTypeUtil.toLong(source.get("maxAccessCount")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setNumOfThread(DfTypeUtil.toInteger(source.get("numOfThread")));
            result.setPermissions(toStringArray(source.get("permissions")));
            result.setSortOrder(DfTypeUtil.toInteger(source.get("sortOrder")));