@Override
  protected BooleanClause doGetFacetClause() {
    SearchContext searchContext = getSearchContext();

    FacetConfiguration facetConfiguration = getFacetConfiguration();

    JSONObject dataJSONObject = facetConfiguration.getData();

    String[] values = null;

    if (isStatic() && dataJSONObject.has("values")) {
      JSONArray valuesJSONArray = dataJSONObject.getJSONArray("values");

      values = new String[valuesJSONArray.length()];

      for (int i = 0; i < valuesJSONArray.length(); i++) {
        values[i] = valuesJSONArray.getString(i);
      }
    }

    String[] valuesParam =
        StringUtil.split(GetterUtil.getString(searchContext.getAttribute(getFieldName())));

    if (!isStatic() && (valuesParam != null) && (valuesParam.length > 0)) {
      values = valuesParam;
    }

    if ((values == null) || (values.length == 0)) {
      return null;
    }

    BooleanQuery facetQuery = BooleanQueryFactoryUtil.create(searchContext);

    for (String value : values) {
      FacetValueValidator facetValueValidator = getFacetValueValidator();

      if ((searchContext.getUserId() > 0) && !facetValueValidator.check(searchContext, value)) {

        continue;
      }

      TermQuery termQuery = TermQueryFactoryUtil.create(searchContext, getFieldName(), value);

      try {
        facetQuery.add(termQuery, BooleanClauseOccur.SHOULD);
      } catch (ParseException pe) {
        _log.error(pe, pe);
      }
    }

    if (!facetQuery.hasClauses()) {
      return null;
    }

    return BooleanClauseFactoryUtil.create(
        searchContext, facetQuery, BooleanClauseOccur.MUST.getName());
  }
  @Override
  public FacetConfiguration getDefaultConfiguration() {
    FacetConfiguration facetConfiguration = new FacetConfiguration();

    facetConfiguration.setClassName(getFacetClassName());

    JSONObject jsonObject = JSONFactoryUtil.createJSONObject();

    jsonObject.put("frequencyThreshold", 1);
    jsonObject.put("maxTerms", 10);
    jsonObject.put("showAssetCount", true);

    facetConfiguration.setDataJSONObject(jsonObject);

    facetConfiguration.setFieldName(getFieldName());
    facetConfiguration.setLabel(getLabel());
    facetConfiguration.setOrder(getOrder());
    facetConfiguration.setStatic(false);
    facetConfiguration.setWeight(1.2);

    return facetConfiguration;
  }