}
        mergedItem.tags = tagList.toArray(new String[tagList.size()]);

        final List<String> langList = new ArrayList<>(item1.getLanguages().length + item2.getLanguages().length);
        Collections.addAll(langList, item1.getLanguages());
        for (final String lang : item2.getLanguages()) {
            if (!langList.contains(lang)) {
                langList.add(lang);
            }
        }

    }

    public String[] getLanguages(final HttpServletRequest request, final SearchRequestParams params) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        if (params.getLanguages() != null) {
            final Set<String> langSet = new HashSet<>();
            for (final String lang : params.getLanguages()) {

            if (virtualHost != null) {
                tags.add(virtualHost);
            }

            if (sb.length() > 0) {
                final String[] langs = searchLog.getLanguages() == null ? new String[] {} : searchLog.getLanguages().split(",");
                stream(searchLog.getRoles()).of(stream -> stream.forEach(role -> roles.add(role)));

        registerModifiedProperty("hitCountRelation");
        this.hitCountRelation = value;
    }

    public String getLanguages() {
        checkSpecifiedProperty("languages");
        return convertEmptyToNull(languages);
    }

    public void setLanguages(String value) {
        registerModifiedProperty("languages");
        this.languages = value;
    }

    public String getQueryId() {

    }

    @Override
    public Map<String, String[]> getFields() {
        return fields;
    }

    @Override
    public String[] getLanguages() {
        return stream(lang).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override
    public GeoInfo getGeoInfo() {

            num = fessConfig.getPagingSearchPageMaxSizeAsInteger();
        }
        return num;
    }

    @Override
    public String[] getLanguages() {
        return stream(lang).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override
    public GeoInfo getGeoInfo() {
        return null;
    }

            }

            @Override
            public Map<String, String[]> getConditions() {
                return conditions;
            }

            @Override
            public String[] getLanguages() {
                return null;
            }

            @Override
            public GeoInfo getGeoInfo() {
                return null;
            }

            @Override

    public abstract String getQuery();

    public abstract Map<String, String[]> getFields();

    public abstract Map<String, String[]> getConditions();

    public abstract String[] getLanguages();

    public abstract GeoInfo getGeoInfo();

    public abstract FacetInfo getFacetInfo();

    public abstract HighlightInfo getHighlightInfo();

    public abstract String getSort();

        }

        @Override
        public Map<String, String[]> getConditions() {
            return parent.getConditions();
        }

        @Override
        public String[] getLanguages() {
            return parent.getLanguages();
        }

        @Override
        public GeoInfo getGeoInfo() {
            return parent.getGeoInfo();
        }

        @Override

            // redirect to index page
            form.q = null;
            return redirectToRoot();
        }

        try {
            buildFormParams(form);
            form.lang = searchHelper.getLanguages(request, form);
            final WebRenderData renderData = new WebRenderData();
            searchHelper.search(form, renderData, getUserBean());
            return asHtml(virtualHost(path_SearchJsp)).renderWith(data -> {