使用一组触发器安排石英作业

Question

我使用的是石英2.2，我想用一组触发器安排工作。 我计划使用以下方法。

void scheduleJobs(Map<JobDetail, Set<? extends Trigger>> triggers, boolean replace)

我的问题是，如何创建一个包含扩展Trigger的类的Set ？ TriggerBuilder仅返回Trigger ，但不能将其放在集合中。 我搜索了API，但找不到解决方案。

谢谢

Answer 1

普通Java中最简单的方法（可能不是最干净的方法）是执行以下操作：

    QuartzScheduler quartzScheduler = ...

    Set<Trigger> triggers = new HashSet<>();
    triggers.add(new SimpleTriggerImpl());
    triggers.add(new CronTriggerImpl());

    Map<JobDetail, Set<? extends Trigger>> triggersAndJobs = new HashMap<>();
    triggersAndJobs.put(new JobDetailImpl(), triggers);

    quartzScheduler.scheduleJobs(triggersAndJobs, false);

或者，如果您不使用Java 7：

    QuartzScheduler quartzScheduler = ...

    Set<Trigger> triggers = new HashSet<Trigger>();
    triggers.add(new SimpleTriggerImpl());
    triggers.add(new CronTriggerImpl());

    Map<JobDetail, Set<? extends Trigger>> triggersAndJobs = new HashMap<JobDetail, Set<? extends Trigger>>();
    triggersAndJobs.put(new JobDetailImpl(), triggers);

    quartzScheduler.scheduleJobs(triggersAndJobs, false);

番石榴的较短版本：

    QuartzScheduler quartzScheduler = ...

    Set<? extends Trigger> set = Sets.newHashSet(new SimpleTriggerImpl(), new CronTriggerImpl());

    Map<JobDetail, Set<? extends Trigger>> triggersAndJobs = Maps.newHashMap();
    triggersAndJobs.put(new JobDetailImpl(), set);

    quartzScheduler.scheduleJobs(triggersAndJobs, false);

更新 。 实际上，使用TriggerBuilder并不会改变太多。 TriggerBuilder.build()返回一个触发器实例，该实例可以作为Trigger引用。

    QuartzScheduler quartzScheduler = ...

    Set<Trigger> triggers = new HashSet<Trigger>();

    Trigger trigger1 = newTrigger()
            .withIdentity(triggerKey("myTrigger", "myTriggerGroup"))
            .withSchedule(simpleSchedule()
                    .withIntervalInHours(1)
                    .repeatForever())
            .startAt(futureDate(10, DateBuilder.IntervalUnit.MINUTE))
            .build();
    triggers.add(trigger1);

    Trigger trigger2 = newTrigger() ...
    triggers.add(trigger2);

    Map<JobDetail, Set<? extends Trigger>> triggersAndJobs = new HashMap<JobDetail, Set<? extends Trigger>>();
    triggersAndJobs.put(new JobDetailImpl(), triggers);

    quartzScheduler.scheduleJobs(triggersAndJobs, false);