public QueryBuilder buildFunctionScoreQuery(final String query, final QueryBuilder queryBuilder) {

        final List<FunctionScoreQueryBuilder.FilterFunctionBuilder> flist = new ArrayList<>();

        if (isSingleWordQuery(query) && !isHiraganaQuery(query)) {
            flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(QueryBuilders.prefixQuery(FieldNames.TEXT, query),

        if (hits.length > 0) {
            index = hits[0].getIndex();
        } else {
            index = SuggestConstants.EMPTY_STRING;
        }

        final boolean singleWordQuery = queryBuilder.isSingleWordQuery(query);
        final boolean hiraganaQuery = queryBuilder.isHiraganaQuery(query);
        for (int i = 0; i < hits.length && words.size() < size; i++) {
            final SearchHit hit = hits[i];