assertEquals("title:fess", ((TermQuery) query).getTerm().toString());

        query = queryParser.createDefaultFilterChain().parse("fess*");
        assertEquals(PrefixQuery.class, query.getClass());
        assertEquals("_default:fess", ((PrefixQuery) query).getPrefix().toString());

        query = queryParser.createDefaultFilterChain().parse("fe?s");
        assertEquals(WildcardQuery.class, query.getClass());

     */
    protected QueryBuilder convertPrefixQuery(final QueryContext context, final PrefixQuery prefixQuery, final float boost) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String field = getSearchField(context.getDefaultField(), prefixQuery.getField());
        final String text = prefixQuery.getPrefix().text();

        if (Constants.DEFAULT_FIELD.equals(field)) {

                || block == UnicodeBlock.HIRAGANA //
                || block == UnicodeBlock.KATAKANA //
                || block == UnicodeBlock.HANGUL_SYLLABLES //
        ) {
            return QueryBuilders.prefixQuery(f, text);
        }
        return QueryBuilders.matchPhraseQuery(f, text);
    }

    /**
     * Gets the actual search field, replacing default field placeholder if needed.