*/
    public DocBoostMatcher(final BoostDocumentRule rule) {
        matchExpression = rule.getUrlExpr();
        boostExpression = rule.getBoostExpr();
        scriptType = ComponentUtil.getFessConfig().getCrawlerDefaultScript();
    }

    /**
     * Determines if the given document data matches the configured match expression.
     *
     * @param map the document data as a map of field names to values

     * comment: Default script for the crawler (e.g., groovy).
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getCrawlerDefaultScript();

    /**
     * Get the value for the key 'crawler.http.thread_pool.size'. <br>
     * The value is, e.g. 0 <br>
     * comment: Number of threads for HTTP crawling.