ruleList.add(new IntervalRule(from, to, days, delay));
    }

    public boolean isCrawlerRunning() {
        return crawlerRunning;
    }

    public void setCrawlerRunning(final boolean crawlerRunning) {
        this.crawlerRunning = crawlerRunning;
    }

    public static class IntervalRule {
        protected int fromHours;

        protected int fromMinutes;