if (documentBoost > 0) {
            addBoostValue(map, documentBoost);
        }

        if (!map.containsKey(fessConfig.getIndexFieldDocId())) {
            map.put(fessConfig.getIndexFieldDocId(), systemHelper.generateDocId(map));
        }

        ComponentUtil.getLanguageHelper().updateDocument(map);
    }

    protected void addBoostValue(final Map<String, Object> map, final float documentBoost) {