如果前一个小时的作业尚未完成，如何使Quartz Scheduler每小时运行一次而不运行？

import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;

public class JobScheduler {
    public static void main(String[] args) throws SchedulerException {
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

        // 定义Job
        JobDetail job = JobBuilder.newJob(MyJob.class)
                .withIdentity("myJob", "group1")
                .build();

        // 定义Trigger
        Trigger trigger = TriggerBuilder.newTrigger()
                .withIdentity("myTrigger", "group1")
                .startNow()
                .withSchedule(SimpleScheduleBuilder.simpleSchedule()
                        .withIntervalInHours(1)
                        .repeatForever())
                .build();

        // 添加JobListener
        scheduler.getListenerManager().addJobListener(new MyJobListener());

        // 调度Job
        scheduler.scheduleJob(job, trigger);
        scheduler.start();
    }
}

class MyJob implements Job {
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        // 模拟长时间运行的任务
        try {
            Thread.sleep(7000); // 假设任务需要7秒完成
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("Job executed at: " + new Date());
    }
}

class MyJobListener implements JobListener {
    @Override
    public String getName() {
        return "MyJobListener";
    }

    @Override
    public void jobToBeExecuted(JobExecutionContext context) {
        // 在任务开始前检查前一个任务是否完成
        if (isPreviousJobRunning(context)) {
            System.out.println("Previous job is still running. Skipping this execution.");
            context.getScheduler().pauseTrigger(context.getTrigger().getKey());
        }
    }

    @Override
    public void jobWasExecuted(JobExecutionContext context, JobExecutionException jobException) {
        // 任务完成后恢复触发器
        context.getScheduler().resumeTrigger(context.getTrigger().getKey());
    }

    private boolean isPreviousJobRunning(JobExecutionContext context) {
        // 这里可以实现检查前一个任务是否完成的逻辑
        // 例如，检查数据库中的任务状态
        return false; // 假设前一个任务总是完成
    }
}