assertEquals(
                "if(ctx._source.lang!=null){ctx._source['title_'+ctx._source.lang]=ctx._source.title;ctx._source['content_'+ctx._source.lang]=ctx._source.content}",
                languageHelper.getReindexScriptSource());
    }

            }
        }
        if (logger.isDebugEnabled()) {
            logger.debug("update script: {}", buf);
        }
        return new Script(buf.toString());
    }

    public String getReindexScriptSource() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String langField = fessConfig.getIndexFieldLang();

                .replace("__SIZE__", fessConfig.getIndexReindexSize())//
                .replace("__DEST_INDEX__", toIndex)//
                .replace("__SCRIPT_SOURCE__", ComponentUtil.getLanguageHelper().getReindexScriptSource());
        return reindex(fromIndex, toIndex, source, waitForCompletion);
    }

    public boolean reindex(final String fromIndex, final String toIndex, final boolean waitForCompletion) {