* request-scoped attributes for highlighting and field logging.
     * @param queryString The query string to process.
     * @param isQuery Whether this is a search query (enables highlighting and logging).
     */
    @SuppressWarnings("unchecked")
    public QueryContext(final String queryString, final boolean isQuery) {
        if (queryString != null) {
            if (queryString.startsWith(ALLINURL_FIELD_PREFIX)) {