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TIBCO BusinessEvents® Enterprise Edition 6.3.1

# Creating a Scheduler

Procedure
1. Create a scheduler using the function `Cluster.createScheduler(`).

   You can do this, for example, in a startup rule function, or other rule function or rule:

       void createScheduler(String schedulerName, long pollInterval, long refreshAhead)

   `schedulerName` - A unique ID for the scheduler you are creating.

   `pollInterval` - TIBCO BusinessEvents checks the scheduler cache every `pollInterval` milliseconds, for scheduler work items whose `scheduledTime` falls in the current interval.

   `refreshAhead` - Time in milliseconds (into the future) used to pre-load the scheduled events from the backing store.

   Note: In this release, the larger value of `pollInterval` and `refreshAhead` is used for both these settings.

   For example:

       Cluster.createScheduler("myScheduler", 1000, 5000);

2. Schedule the Event to be Sent

Result

You use the function `Cluster.scheduleEvent()` to schedule an event to be sent at a certain time, using a scheduler you created earlier. You can do this in a rule or rule function as needed:

    void scheduleEvent(StringschedulerName,StringworkKey, SimpleEventevt, longscheduledTime)

Where:

- `schedulerName` is the unique ID for the scheduler you created at an earlier time.
- `workKey` is a unique key that identifies the work item (that is, the scheduled task). This key can be used to identify the work item later, for example to cancel it.
- `evt` is the simple event to be scheduled.
- `scheduledTime` is used to specify the time the event is sent to its default destination. The value is interpreted as an absolute time. To schedule a time relative to the present, use the `System.currentTimeMillis()` function, as shown below.

For example:

    Cluster.scheduleEvent("MyScheduler", myworkKey, Event.createEvent("xslt://
    		  details omitted "),
    		  System.currentTimeMillis() + 5000)

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TIBCO BusinessEvents® Enterprise Edition

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