@ValidateTypeFailure
    public Integer start;

    @ValidateTypeFailure
    public Integer offset;

    @ValidateTypeFailure
    public Integer pn;

    @Size(max = 1000)
    public String sdh;

    @Size(max = 100)
    public String track_total_hits;

    // advance

    @Override
    public int getStartPosition() {
        if (start == null) {

    public String[] lang;

    public Map<String, String[]> fields = new HashMap<>();

    public Map<String, String[]> as = new HashMap<>();

    public String[] ex_q;

    public String sdh;

    @Override
    public String getQuery() {
        return q;
    }

    @Override
    public String[] getExtraQueries() {

  </function>

  <function>
    <description>Encode Similar Document Hash.</description>
    <name>sdh</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String sdh(java.lang.String)</function-signature>
    <example>${fe:sdh(doc.similar_docs_hash)}</example>
  </function>

  <function>

                logger.debug("Failed to access {}", input, e);
            }
        }
        return LaResponseUtil.getResponse().encodeURL(sb.toString());
    }

    public static String sdh(final String input) {
        if (StringUtil.isBlank(input)) {
            return input;
        }
        return ComponentUtil.getDocumentHelper().encodeSimilarDocHash(input);
    }

        public SearchRequestType getType() {
            return SearchRequestType.JSON;
        }

        @Override
        public String getSimilarDocHash() {
            return request.getParameter("sdh");
        }

        @Override
        public HighlightInfo getHighlightInfo() {
            return ComponentUtil.getViewHelper().createHighlightInfo();
        }
    }