public String getIndexFieldBoost() {
                return "boost";
            }

            @Override
            public String getIndexFieldContentLength() {
                return "content_length";
            }

            @Override
            public String getIndexFieldHost() {
                return "host";
            }

            @Override

        }
    }

    @Test
    public void searchTestWithSort() throws Exception {
        String sortField = "content_length";
        Map<String, String> params = new HashMap<>();
        params.put("q", "*");
        params.put("sort", sortField + ".asc");
        params.put("num", "100");

      },
      "content_minhash": {
        "type": "keyword",
        "index": false
      },
      "content_minhash_bits": {
        "type": "keyword",
        "index": false
      },
      "content_length": {
        "type": "long"
      },
      "created": {
        "type": "date",
        "format": "date_optional_time"
      },
      "timestamp": {
        "type": "date",

     * labels.facet_contentLength_title:labels.facet_contentLength_10k=content_length:[0 TO 9999]	labels.facet_contentLength_10kto100k=content_length:[10000 TO 99999]	labels.facet_contentLength_100kto500k=content_length:[100000 TO 499999]	labels.facet_contentLength_500kto1m=content_length:[500000 TO 999999]	labels.facet_contentLength_1m=content_length:[1000000 TO *]<br>

                        last_modified:
                          type: string
                          format: date-time
                          example: "2017-10-09T22:28:56.000Z"
                        content_length:
                          type: string
                          example: "29624"
                        timestamp:
                          type: string
                          format: date-time

            public String getIndexFieldBoost() {
                return "boost";
            }

            @Override
            public String getIndexFieldContentLength() {
                return "content_length";
            }

            @Override
            public String getIndexFieldHost() {
                return "host";
            }

            @Override
            public String getIndexFieldSite() {

        if (fileTypeHelper != null) {
            // filetype
            putResultDataBody(dataMap, fessConfig.getIndexFieldFiletype(), fileTypeHelper.get(mimeType));
        }
        // content_length
        putResultDataBody(dataMap, fessConfig.getIndexFieldContentLength(), Long.toString(responseData.getContentLength()));
        // last_modified
        final Date lastModified = getLastModified(dataMap, responseData);

            public String getIndexFieldBoost() {
                return "boost";
            }

            @Override
            public String getIndexFieldContentLength() {
                return "content_length";
            }

            @Override
            public String getIndexFieldHost() {
                return "host";
            }

            @Override

        if (fileTypeHelper != null) {
            // filetype
            putResultDataBody(dataMap, fessConfig.getIndexFieldFiletype(), fileTypeHelper.get(mimeType));
        }
        // content_length
        putResultDataBody(dataMap, fessConfig.getIndexFieldContentLength(), Long.toString(responseData.getContentLength()));
        // last_modified
        final Date lastModified = responseData.getLastModified();

  /** The HTTP {@code Cache-Control} header field name. */
  public static final String CACHE_CONTROL = "Cache-Control";

  /** The HTTP {@code Content-Length} header field name. */
  public static final String CONTENT_LENGTH = "Content-Length";

  /** The HTTP {@code Content-Type} header field name. */
  public static final String CONTENT_TYPE = "Content-Type";

  /** The HTTP {@code Date} header field name. */